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SyncVals · Trajectory

appsync-graphql-cognito-resolver-cache-leak

claude-code claude-opus-4-7 ✗ failed GOOD_FAILURE ↑ View task
Solved from the instruction alone, tests/ and solution/ were withheld from the agent's workspace and restored only for grading.
Reward = tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.
Classification , post-hoc; cannot change the reward
GOOD_FAILUREHonest miss, the agent ran correctly but couldn't solve it. Expected for a hard task; the task is sound.
SubtypeIncomplete Understanding
EvidenceTest `test_54_schema_mutation_addthing_does_not_accept_tenant_or_owner_args` explicitly checked that the schema's `Mutation.addThing` signature does NOT accept `tenantId` or `ownerId` as arguments. The agent successfully removed `tenantId` from the schema but left `ownerId` in place: `addThing(id: ID!, name: String!, ownerId: String!)` instead of the required `addThing(id: ID!, name: String!): Thing`. Test output: AssertionError with leaked=`['ownerId']`.
Root causeThe agent correctly identified and fixed 13+ of 14+ audit findings (cache keys, pipeline order, auth VTL syntax, KMS permissions, API settings, etc.) but missed that the mutation schema argument list needed BOTH tenantId and ownerId removed, stopping after removing only tenantId. This was a partial fix of a schema requirement.
RecommendationN/A - task is fine. The instruction clearly stated "an argument that shouldn't be client-settable" and the test explicitly verified both tenantId and ownerId were removed. The agent's failure was due to incomplete execution of a clearly-specified requirement, not an underspecified or ambiguous task.
Trajectory
Tool-by-tool agent trajectory
61 tool calls · 3 tool types · 61 steps
a multi-tenant GraphQL surface (an AppSync API `harbor-graphql-api` fronting a Cognito user pool with a `tenants` group and a DynamoDB table `harbor-things`) was handed off by a mobile team mid-rebuild. internal security passed it through their audit and rejected it. the resources exist and most of the wiring is in place , read the SSM manifest under `/harbor/graphql/*` to get the names and ids the team published. the audit's blocking findings, in their words, are: > The read path can return one tenant's row to another tenant , the cache key list and the caching mode are both wrong, so the cache itself isn't tenant-scoped. The read path also makes a strongly-consistent DDB fetch that silently bypasses the cache layer regardless of how the cache is configured. The write path lets a client claim a tenant they don't belong to. The monitoring service's read-only key can mutate the table. The data fetch role lacks key material for the encrypted table and AccessDenied surfaces at request time, not at provision time. The auth gate on the read path never rejects a missing-group token and intermittently rejects a valid one. The resolver pipeline runs steps in an order that lets data come back before the auth gate has decided anything. The cache is hot and large; clearing it doesn't help , the cache key list is the problem, and so is the caching mode the API was put on. > > Tracking issues, not blockers but in scope for this fix: the API's default authorization mode is wrong for a deny-by-default schema; x-ray is off; field-level logging is at the wrong level; the mutation can silently overwrite existing rows; the read-only API key's expiry is well outside the weekly-rotation window; the additional auth providers list contains a provider the API didn't authorize. the environment is reachable at `$AWS_ENDPOINT_URL`, `ENFORCE_IAM=1`, account `000000000000`, region `us-east-1`. you have one shot to diagnose and fix everything; the verifier walks more than 50 separate assertions on resource shape, VTL bodies (request AND response templates of both functions and both resolvers), schema SDL (type-level and field-level), IAM policy JSON, and cache config. recreating an individual resource is fine when its config can't be changed in place (schema replace, function VTL rewrite, etc.). don't rename or relocate resources or SSM keys , the SSM manifest must keep resolving to the new state. inspect what's actually deployed end-to-end before you fix anything. some of the bugs are shape, some are subtle VTL (mapping template request AND response sides; protocol version field; claim access syntax for claim names that aren't valid identifiers), and some are schema (a directive that shouldn't be there, an argument that shouldn't be client-settable). all of the bugs are independent , each one on its own is enough to fail the audit.
Bash
{
  "command": "env | grep -i aws",
  "description": "Check AWS environment variables"
}
output
AWS_DEFAULT_REGION=us-east-1
AWS_PAGER=
AWS_SECRET_ACCESS_KEY=test
AWS_ACCESS_KEY_ID=test
AWS_ENDPOINT_URL=http://localstack:4566

[stdout]
AWS_DEFAULT_REGION=us-east-1
AWS_PAGER=
AWS_SECRET_ACCESS_KEY=test
AWS_ACCESS_KEY_ID=test
AWS_ENDPOINT_URL=http://localstack:4566
Bash
{
  "command": "aws ssm get-parameters-by-path --path \"/harbor/graphql/\" --recursive --region us-east-1 2>&1 | head -200",
  "description": "Read SSM manifest under /harbor/graphql/"
}
output
{
    "Parameters": [
        {
            "Name": "/harbor/graphql/api-id",
            "Type": "String",
            "Value": "d8faea6142394a708f5dd8cdd8",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:56.272000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/api-id",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/user-pool-id",
            "Type": "String",
            "Value": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:56.820000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/user-pool-id",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/app-client-id",
            "Type": "String",
            "Value": "q3cdcy7p4wf6sh1clbtaaf8q9q",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:57.337000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/app-client-id",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/group-name",
            "Type": "String",
            "Value": "tenants",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:57.837000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/group-name",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/ddb-table",
            "Type": "String",
            "Value": "harbor-things",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:58.355000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/ddb-table",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/kms-key-arn",
            "Type": "String",
            "Value": "arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:58.859000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/kms-key-arn",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/log-group-name",
            "Type": "String",
            "Value": "/aws/appsync/apis/harbor-graphql-api",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:57:59.326000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/log-group-name",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/svc-role-arn",
            "Type": "String",
            "Value": "arn:aws:iam::000000000000:role/harbor-appsync-svc-role",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:58:00.183000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/svc-role-arn",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/logs-role-arn",
            "Type": "String",
            "Value": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:58:00.871000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/logs-role-arn",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/data-source",
            "Type": "String",
            "Value": "things_table",
            "Version": 1,
            "LastModifiedDate": "2026-05-16T12:58:01.455000+00:00",
            "ARN": "arn:aws:ssm:us-east-1:000000000000:parameter/harbor/graphql/data-source",
            "DataType": "text"
        },
        {
            "Name": "/harbor/graphql/api-key",
            "Type": "String",
            "Value": "4b2a57fc",
            "Version": 1,
            "LastModifie
…[truncated]
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync get-graphql-api --api-id $API_ID --region us-east-1 2>&1",
  "description": "Inspect GraphQL API config"
}
output
{
    "graphqlApi": {
        "name": "harbor-graphql-api",
        "apiId": "d8faea6142394a708f5dd8cdd8",
        "authenticationType": "AMAZON_COGNITO_USER_POOLS",
        "logConfig": {
            "fieldLogLevel": "ERROR",
            "cloudWatchLogsRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
            "excludeVerboseContent": true
        },
        "userPoolConfig": {
            "userPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "awsRegion": "us-east-1",
            "defaultAction": "ALLOW"
        },
        "arn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8",
        "uris": {
            "GRAPHQL": "http://localhost.localstack.cloud:4566/graphql/d8faea6142394a708f5dd8cdd8",
            "REALTIME": "ws://localhost.localstack.cloud:4510/graphql/d8faea6142394a708f5dd8cdd8"
        },
        "tags": {},
        "additionalAuthenticationProviders": [
            {
                "authenticationType": "API_KEY"
            },
            {
                "authenticationType": "AWS_IAM"
            }
        ],
        "xrayEnabled": false
    }
}

[stdout]
{
    "graphqlApi": {
        "name": "harbor-graphql-api",
        "apiId": "d8faea6142394a708f5dd8cdd8",
        "authenticationType": "AMAZON_COGNITO_USER_POOLS",
        "logConfig": {
            "fieldLogLevel": "ERROR",
            "cloudWatchLogsRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
            "excludeVerboseContent": true
        },
        "userPoolConfig": {
            "userPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "awsRegion": "us-east-1",
            "defaultAction": "ALLOW"
        },
        "arn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8",
        "uris": {
            "GRAPHQL": "http://localhost.localstack.cloud:4566/graphql/d8faea6142394a708f5dd8cdd8",
            "REALTIME": "ws://localhost.localstack.cloud:4510/graphql/d8faea6142394a708f5dd8cdd8"
        },
        "tags": {},
        "additionalAuthenticationProviders": [
            {
                "authenticationType": "API_KEY"
            },
            {
                "authenticationType": "AWS_IAM"
            }
        ],
        "xrayEnabled": false
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync get-introspection-schema --api-id $API_ID --format SDL /tmp/schema.graphql --region us-east-1 2>&1; cat /tmp/schema.graphql",
  "description": "Get schema SDL"
}
output
type Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  id: ID!
  name: String!
  ownerId: String!
  tenantId: String!
}

type Query @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  getThing(id: ID!): Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key
}

type Mutation @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  addThing(id: ID!, name: String!, tenantId: String!, ownerId: String!): Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key
}

schema {
  query: Query
  mutation: Mutation
}

[stdout]
type Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  id: ID!
  name: String!
  ownerId: String!
  tenantId: String!
}

type Query @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  getThing(id: ID!): Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key
}

type Mutation @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  addThing(id: ID!, name: String!, tenantId: String!, ownerId: String!): Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key
}

schema {
  query: Query
  mutation: Mutation
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync list-functions --api-id $API_ID --region us-east-1 2>&1",
  "description": "List AppSync functions"
}
output
{
    "functions": [
        {
            "functionId": "0c5939d7",
            "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/0c5939d7",
            "name": "auth_check",
            "dataSourceName": "things_table",
            "requestMappingTemplate": "#set( $groups = $ctx.identity.claims.cognito:groups )\n#if( $util.isNull($groups) )\n  $util.unauthorized()\n#end\n#if( !$groups.contains(\"tenants\") )\n  $util.unauthorized()\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"payload\": {}\n}",
            "responseMappingTemplate": "$util.toJson($ctx.prev.result)",
            "functionVersion": "2018-05-29",
            "maxBatchSize": 0
        },
        {
            "functionId": "c96e2ef8",
            "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/c96e2ef8",
            "name": "get_thing_data",
            "dataSourceName": "things_table",
            "requestMappingTemplate": "{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"GetItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"consistentRead\": true\n}",
            "responseMappingTemplate": "$util.toJson($ctx.result)",
            "functionVersion": "2018-05-29",
            "maxBatchSize": 0
        }
    ]
}

[stdout]
{
    "functions": [
        {
            "functionId": "0c5939d7",
            "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/0c5939d7",
            "name": "auth_check",
            "dataSourceName": "things_table",
            "requestMappingTemplate": "#set( $groups = $ctx.identity.claims.cognito:groups )\n#if( $util.isNull($groups) )\n  $util.unauthorized()\n#end\n#if( !$groups.contains(\"tenants\") )\n  $util.unauthorized()\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"payload\": {}\n}",
            "responseMappingTemplate": "$util.toJson($ctx.prev.result)",
            "functionVersion": "2018-05-29",
            "maxBatchSize": 0
        },
        {
            "functionId": "c96e2ef8",
            "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/c96e2ef8",
            "name": "get_thing_data",
            "dataSourceName": "things_table",
            "requestMappingTemplate": "{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"GetItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"consistentRead\": true\n}",
            "responseMappingTemplate": "$util.toJson($ctx.result)",
            "functionVersion": "2018-05-29",
            "maxBatchSize": 0
        }
    ]
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync list-data-sources --api-id $API_ID --region us-east-1 2>&1",
  "description": "List AppSync data sources"
}
output
{
    "dataSources": [
        {
            "dataSourceArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/datasources/things_table",
            "name": "things_table",
            "type": "AMAZON_DYNAMODB",
            "serviceRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-svc-role",
            "dynamodbConfig": {
                "tableName": "harbor-things",
                "awsRegion": "us-east-1",
                "useCallerCredentials": false,
                "versioned": false
            }
        }
    ]
}

[stdout]
{
    "dataSources": [
        {
            "dataSourceArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/datasources/things_table",
            "name": "things_table",
            "type": "AMAZON_DYNAMODB",
            "serviceRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-svc-role",
            "dynamodbConfig": {
                "tableName": "harbor-things",
                "awsRegion": "us-east-1",
                "useCallerCredentials": false,
                "versioned": false
            }
        }
    ]
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync list-resolvers --api-id $API_ID --type-name Query --region us-east-1 2>&1; echo \"---\"; aws appsync list-resolvers --api-id $API_ID --type-name Mutation --region us-east-1 2>&1",
  "description": "List resolvers"
}
output
{
    "resolvers": [
        {
            "typeName": "Query",
            "fieldName": "getThing",
            "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Query/resolvers/getThing",
            "requestMappingTemplate": "{}",
            "responseMappingTemplate": "$util.toJson($ctx.result)",
            "kind": "PIPELINE",
            "pipelineConfig": {
                "functions": [
                    "c96e2ef8",
                    "0c5939d7"
                ]
            },
            "cachingConfig": {
                "ttl": 600,
                "cachingKeys": [
                    "$context.arguments.id"
                ]
            },
            "maxBatchSize": 0
        }
    ]
}
---
{
    "resolvers": [
        {
            "typeName": "Mutation",
            "fieldName": "addThing",
            "dataSourceName": "things_table",
            "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Mutation/resolvers/addThing",
            "requestMappingTemplate": "#set( $tenant = $ctx.identity.claims.get(\"tenant_id\") )\n#set( $owner = $ctx.identity.username )\n#if( $util.isNull($tenant) )\n  $util.error(\"tenant_id claim missing\", \"Unauthorized\")\n#end\n{\n  \"version\": \"2017-02-28\",\n  \"operation\": \"PutItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"attributeValues\": {\n    \"name\": $util.dynamodb.toDynamoDBJson($ctx.arguments.name),\n    \"tenantId\": $util.dynamodb.toDynamoDBJson($tenant),\n    \"ownerId\": $util.dynamodb.toDynamoDBJson($owner)\n  }\n}",
            "responseMappingTemplate": "$util.toJson($ctx.result)",
            "kind": "UNIT",
            "maxBatchSize": 0
        }
    ]
}

[stdout]
{
    "resolvers": [
        {
            "typeName": "Query",
            "fieldName": "getThing",
            "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Query/resolvers/getThing",
            "requestMappingTemplate": "{}",
            "responseMappingTemplate": "$util.toJson($ctx.result)",
            "kind": "PIPELINE",
            "pipelineConfig": {
                "functions": [
                    "c96e2ef8",
                    "0c5939d7"
                ]
            },
            "cachingConfig": {
                "ttl": 600,
                "cachingKeys": [
                    "$context.arguments.id"
                ]
            },
            "maxBatchSize": 0
        }
    ]
}
---
{
    "resolvers": [
        {
            "typeName": "Mutation",
            "fieldName": "addThing",
            "dataSourceName": "things_table",
            "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Mutation/resolvers/addThing",
            "requestMappingTemplate": "#set( $tenant = $ctx.identity.claims.get(\"tenant_id\") )\n#set( $owner = $ctx.identity.username )\n#if( $util.isNull($tenant) )\n  $util.error(\"tenant_id claim missing\", \"Unauthorized\")\n#end\n{\n  \"version\": \"2017-02-28\",\n  \"operation\": \"PutItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"attributeValues\": {\n    \"name\": $util.dynamodb.toDynamoDBJson($ctx.arguments.name),\n    \"tenantId\": $util.dynamodb.toDynamoDBJson($tenant),\n    \"ownerId\": $util.dynamodb.toDynamoDBJson($owner)\n  }\n}",
            "responseMappingTemplate": "$util.toJson($ctx.result)",
            "kind": "UNIT",
            "maxBatchSize": 0
        }
    ]
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync get-api-cache --api-id $API_ID --region us-east-1 2>&1",
  "description": "Get API cache config"
}
output
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "FULL_REQUEST_CACHING",
        "type": "SMALL"
    }
}

[stdout]
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "FULL_REQUEST_CACHING",
        "type": "SMALL"
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"; aws appsync list-api-keys --api-id $API_ID --region us-east-1 2>&1",
  "description": "List API keys"
}
output
{
    "apiKeys": [
        {
            "id": "4b2a57fc",
            "expires": 1810468800,
            "deletes": 1815652800
        }
    ]
}

[stdout]
{
    "apiKeys": [
        {
            "id": "4b2a57fc",
            "expires": 1810468800,
            "deletes": 1815652800
        }
    ]
}
Bash
{
  "command": "aws iam get-role --role-name harbor-appsync-svc-role --region us-east-1 2>&1; echo \"---\"; aws iam list-role-policies --role-name harbor-appsync-svc-role --region us-east-1 2>&1; echo \"---\"; aws iam list-attached-role-policies --role-name harbor-appsync-svc-role --region us-east-1 2>&1",
  "description": "Inspect svc role"
}
output
{
    "Role": {
        "Path": "/",
        "RoleName": "harbor-appsync-svc-role",
        "RoleId": "AROAQAAAAAAAMUEYZWQY3",
        "Arn": "arn:aws:iam::000000000000:role/harbor-appsync-svc-role",
        "CreateDate": "2026-05-16T12:57:43.425287+00:00",
        "AssumeRolePolicyDocument": {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Principal": {
                        "Service": "appsync.amazonaws.com"
                    },
                    "Action": "sts:AssumeRole"
                }
            ]
        },
        "MaxSessionDuration": 3600,
        "RoleLastUsed": {}
    }
}
---
{
    "PolicyNames": [
        "appsync-ddb-scoped"
    ]
}
---
{
    "AttachedPolicies": []
}

[stdout]
{
    "Role": {
        "Path": "/",
        "RoleName": "harbor-appsync-svc-role",
        "RoleId": "AROAQAAAAAAAMUEYZWQY3",
        "Arn": "arn:aws:iam::000000000000:role/harbor-appsync-svc-role",
        "CreateDate": "2026-05-16T12:57:43.425287+00:00",
        "AssumeRolePolicyDocument": {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Principal": {
                        "Service": "appsync.amazonaws.com"
                    },
                    "Action": "sts:AssumeRole"
                }
            ]
        },
        "MaxSessionDuration": 3600,
        "RoleLastUsed": {}
    }
}
---
{
    "PolicyNames": [
        "appsync-ddb-scoped"
    ]
}
---
{
    "AttachedPolicies": []
}
ToolSearch
{
  "query": "select:TaskCreate,TaskUpdate,TaskList",
  "max_results": 3
}
output
{"type": "tool_reference", "tool_name": "TaskCreate"}

{"type": "tool_reference", "tool_name": "TaskUpdate"}

{"type": "tool_reference", "tool_name": "TaskList"}
Bash
{
  "command": "aws iam get-role-policy --role-name harbor-appsync-svc-role --policy-name appsync-ddb-scoped --region us-east-1 2>&1",
  "description": "Read svc role inline policy"
}
output
{
    "RoleName": "harbor-appsync-svc-role",
    "PolicyName": "appsync-ddb-scoped",
    "PolicyDocument": {
        "Version": "2012-10-17",
        "Statement": [
            {
                "Sid": "DDBScopedActions",
                "Effect": "Allow",
                "Action": [
                    "dynamodb:GetItem",
                    "dynamodb:PutItem",
                    "dynamodb:Query"
                ],
                "Resource": "arn:aws:dynamodb:us-east-1:000000000000:table/harbor-things"
            }
        ]
    }
}

[stdout]
{
    "RoleName": "harbor-appsync-svc-role",
    "PolicyName": "appsync-ddb-scoped",
    "PolicyDocument": {
        "Version": "2012-10-17",
        "Statement": [
            {
                "Sid": "DDBScopedActions",
                "Effect": "Allow",
                "Action": [
                    "dynamodb:GetItem",
                    "dynamodb:PutItem",
                    "dynamodb:Query"
                ],
                "Resource": "arn:aws:dynamodb:us-east-1:000000000000:table/harbor-things"
            }
        ]
    }
}
Bash
{
  "command": "aws iam get-role --role-name harbor-appsync-logs-role --region us-east-1 2>&1; echo \"---\"; aws iam list-role-policies --role-name harbor-appsync-logs-role --region us-east-1 2>&1; echo \"---\"; aws iam list-attached-role-policies --role-name harbor-appsync-logs-role --region us-east-1 2>&1",
  "description": "Inspect logs role"
}
output
{
    "Role": {
        "Path": "/",
        "RoleName": "harbor-appsync-logs-role",
        "RoleId": "AROAQAAAAAAANCUYUZBK5",
        "Arn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
        "CreateDate": "2026-05-16T12:57:44.526215+00:00",
        "AssumeRolePolicyDocument": {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Principal": {
                        "Service": "appsync.amazonaws.com"
                    },
                    "Action": "sts:AssumeRole"
                }
            ]
        },
        "MaxSessionDuration": 3600,
        "RoleLastUsed": {}
    }
}
---
{
    "PolicyNames": [
        "appsync-logs-scoped"
    ]
}
---
{
    "AttachedPolicies": [
        {
            "PolicyName": "AWSAppSyncPushToCloudWatchLogs",
            "PolicyArn": "arn:aws:iam::aws:policy/service-role/AWSAppSyncPushToCloudWatchLogs"
        }
    ]
}

[stdout]
{
    "Role": {
        "Path": "/",
        "RoleName": "harbor-appsync-logs-role",
        "RoleId": "AROAQAAAAAAANCUYUZBK5",
        "Arn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
        "CreateDate": "2026-05-16T12:57:44.526215+00:00",
        "AssumeRolePolicyDocument": {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Principal": {
                        "Service": "appsync.amazonaws.com"
                    },
                    "Action": "sts:AssumeRole"
                }
            ]
        },
        "MaxSessionDuration": 3600,
        "RoleLastUsed": {}
    }
}
---
{
    "PolicyNames": [
        "appsync-logs-scoped"
    ]
}
---
{
    "AttachedPolicies": [
        {
            "PolicyName": "AWSAppSyncPushToCloudWatchLogs",
            "PolicyArn": "arn:aws:iam::aws:policy/service-role/AWSAppSyncPushToCloudWatchLogs"
        }
    ]
}
Bash
{
  "command": "aws dynamodb describe-table --table-name harbor-things --region us-east-1 2>&1",
  "description": "Describe DDB table"
}
output
{
    "Table": {
        "AttributeDefinitions": [
            {
                "AttributeName": "id",
                "AttributeType": "S"
            }
        ],
        "TableName": "harbor-things",
        "KeySchema": [
            {
                "AttributeName": "id",
                "KeyType": "HASH"
            }
        ],
        "TableStatus": "ACTIVE",
        "CreationDateTime": "2026-05-16T12:57:40.022000+00:00",
        "ProvisionedThroughput": {
            "LastIncreaseDateTime": "1970-01-01T00:00:00+00:00",
            "LastDecreaseDateTime": "1970-01-01T00:00:00+00:00",
            "NumberOfDecreasesToday": 0,
            "ReadCapacityUnits": 0,
            "WriteCapacityUnits": 0
        },
        "TableSizeBytes": 0,
        "ItemCount": 0,
        "TableArn": "arn:aws:dynamodb:us-east-1:000000000000:table/harbor-things",
        "TableId": "91349ddf-1a9c-4946-8b4f-a106ffda5de3",
        "BillingModeSummary": {
            "BillingMode": "PAY_PER_REQUEST",
            "LastUpdateToPayPerRequestDateTime": "2026-05-16T12:57:40.022000+00:00"
        },
        "SSEDescription": {
            "Status": "ENABLED",
            "SSEType": "KMS",
            "KMSMasterKeyArn": "arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d"
        },
        "DeletionProtectionEnabled": false,
        "WarmThroughput": {
            "ReadUnitsPerSecond": 12000,
            "WriteUnitsPerSecond": 4000,
            "Status": "ACTIVE"
        }
    }
}

[stdout]
{
    "Table": {
        "AttributeDefinitions": [
            {
                "AttributeName": "id",
                "AttributeType": "S"
            }
        ],
        "TableName": "harbor-things",
        "KeySchema": [
            {
                "AttributeName": "id",
                "KeyType": "HASH"
            }
        ],
        "TableStatus": "ACTIVE",
        "CreationDateTime": "2026-05-16T12:57:40.022000+00:00",
        "ProvisionedThroughput": {
            "LastIncreaseDateTime": "1970-01-01T00:00:00+00:00",
            "LastDecreaseDateTime": "1970-01-01T00:00:00+00:00",
            "NumberOfDecreasesToday": 0,
            "ReadCapacityUnits": 0,
            "WriteCapacityUnits": 0
        },
        "TableSizeBytes": 0,
        "ItemCount": 0,
        "TableArn": "arn:aws:dynamodb:us-east-1:000000000000:table/harbor-things",
        "TableId": "91349ddf-1a9c-4946-8b4f-a106ffda5de3",
        "BillingModeSummary": {
            "BillingMode": "PAY_PER_REQUEST",
            "LastUpdateToPayPerRequestDateTime": "2026-05-16T12:57:40.022000+00:00"
        },
        "SSEDescription": {
            "Status": "ENABLED",
            "SSEType": "KMS",
            "KMSMasterKeyArn": "arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d"
        },
        "DeletionProtectionEnabled": false,
        "WarmThroughput": {
            "ReadUnitsPerSecond": 12000,
            "WriteUnitsPerSecond": 4000,
            "Status": "ACTIVE"
        }
    }
}
Bash
{
  "command": "aws iam list-roles --region us-east-1 2>&1 | grep RoleName",
  "description": "List all roles"
}
output
"RoleName": "harbor-appsync-logs-role",
            "RoleName": "harbor-appsync-svc-role",

[stdout]
            "RoleName": "harbor-appsync-logs-role",
            "RoleName": "harbor-appsync-svc-role",
Bash
{
  "command": "aws iam get-role-policy --role-name harbor-appsync-logs-role --policy-name appsync-logs-scoped --region us-east-1 2>&1",
  "description": "Read logs role inline policy"
}
output
{
    "RoleName": "harbor-appsync-logs-role",
    "PolicyName": "appsync-logs-scoped",
    "PolicyDocument": {
        "Version": "2012-10-17",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents"
                ],
                "Resource": "arn:aws:logs:us-east-1:000000000000:log-group:/aws/appsync/apis/harbor-graphql-api:*"
            }
        ]
    }
}

[stdout]
{
    "RoleName": "harbor-appsync-logs-role",
    "PolicyName": "appsync-logs-scoped",
    "PolicyDocument": {
        "Version": "2012-10-17",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents"
                ],
                "Resource": "arn:aws:logs:us-east-1:000000000000:log-group:/aws/appsync/apis/harbor-graphql-api:*"
            }
        ]
    }
}
Bash
{
  "command": "aws cognito-idp list-user-pools --max-results 10 --region us-east-1 2>&1; echo \"---\"; aws cognito-idp list-groups --user-pool-id us-east-1_3bb5c5d14a254b0ca14a583d5794b702 --region us-east-1 2>&1",
  "description": "Inspect Cognito user pool"
}
output
{
    "UserPools": [
        {
            "Id": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "Name": "harbor-graphql-pool",
            "LambdaConfig": {},
            "LastModifiedDate": "2026-05-16T12:57:36.368142+00:00",
            "CreationDate": "2026-05-16T12:57:36.368144+00:00"
        }
    ]
}
---
{
    "Groups": [
        {
            "GroupName": "tenants",
            "UserPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "LastModifiedDate": "2026-05-16T12:57:36+00:00",
            "CreationDate": "2026-05-16T12:57:36+00:00"
        }
    ]
}

[stdout]
{
    "UserPools": [
        {
            "Id": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "Name": "harbor-graphql-pool",
            "LambdaConfig": {},
            "LastModifiedDate": "2026-05-16T12:57:36.368142+00:00",
            "CreationDate": "2026-05-16T12:57:36.368144+00:00"
        }
    ]
}
---
{
    "Groups": [
        {
            "GroupName": "tenants",
            "UserPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "LastModifiedDate": "2026-05-16T12:57:36+00:00",
            "CreationDate": "2026-05-16T12:57:36+00:00"
        }
    ]
}
Bash
{
  "command": "aws kms describe-key --key-id arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d --region us-east-1 2>&1; echo \"---\"; aws kms get-key-policy --key-id arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d --policy-name default --region us-east-1 2>&1",
  "description": "Inspect KMS key"
}
output
{
    "KeyMetadata": {
        "AWSAccountId": "000000000000",
        "KeyId": "8e7b5635-19a5-4737-83d2-62793bcbb05d",
        "Arn": "arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d",
        "CreationDate": "2026-05-16T12:57:34.194819+00:00",
        "Enabled": true,
        "Description": "",
        "KeyUsage": "ENCRYPT_DECRYPT",
        "KeyState": "Enabled",
        "Origin": "AWS_KMS",
        "KeyManager": "CUSTOMER",
        "CustomerMasterKeySpec": "SYMMETRIC_DEFAULT",
        "KeySpec": "SYMMETRIC_DEFAULT",
        "EncryptionAlgorithms": [
            "SYMMETRIC_DEFAULT"
        ],
        "MultiRegion": false,
        "CurrentKeyMaterialId": "55a4791d772852ea8f03d7b6692f05e255a4791d772852ea8f03d7b6692f05e2"
    }
}
---
{
    "Policy": "{\"Version\": \"2012-10-17\", \"Id\": \"key-default-1\", \"Statement\": [{\"Sid\": \"Enable IAM User Permissions\", \"Effect\": \"Allow\", \"Principal\": {\"AWS\": \"arn:aws:iam::000000000000:root\"}, \"Action\": \"kms:*\", \"Resource\": \"*\"}]}"
}

[stdout]
{
    "KeyMetadata": {
        "AWSAccountId": "000000000000",
        "KeyId": "8e7b5635-19a5-4737-83d2-62793bcbb05d",
        "Arn": "arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d",
        "CreationDate": "2026-05-16T12:57:34.194819+00:00",
        "Enabled": true,
        "Description": "",
        "KeyUsage": "ENCRYPT_DECRYPT",
        "KeyState": "Enabled",
        "Origin": "AWS_KMS",
        "KeyManager": "CUSTOMER",
        "CustomerMasterKeySpec": "SYMMETRIC_DEFAULT",
        "KeySpec": "SYMMETRIC_DEFAULT",
        "EncryptionAlgorithms": [
            "SYMMETRIC_DEFAULT"
        ],
        "MultiRegion": false,
        "CurrentKeyMaterialId": "55a4791d772852ea8f03d7b6692f05e255a4791d772852ea8f03d7b6692f05e2"
    }
}
---
{
    "Policy": "{\"Version\": \"2012-10-17\", \"Id\": \"key-default-1\", \"Statement\": [{\"Sid\": \"Enable IAM User Permissions\", \"Effect\": \"Allow\", \"Principal\": {\"AWS\": \"arn:aws:iam::000000000000:root\"}, \"Action\": \"kms:*\", \"Resource\": \"*\"}]}"
}
I have a clear picture of the deployed state. Let me map every audit finding to a concrete fix, then execute. Findings observed: **Blocking** 1. `Query.getThing` cachingKeys = `["$context.arguments.id"]` , no tenant scoping 2. API cache `apiCachingBehavior = FULL_REQUEST_CACHING` , ignores per-resolver keys 3. `get_thing_data` request VTL has `consistentRead: true` , bypasses cache 4. Schema applies `@aws_api_key` to `Mutation`/`addThing` , read-only key can mutate 5. `harbor-appsync-svc-role` has no `kms:*` perms for the table's KMS key 6. `auth_check` VTL uses `$ctx.identity.claims.cognito:groups` , invalid syntax 7. Pipeline order is `[data_fn, auth_fn]` , data before auth 8. `addThing(... tenantId: String!)` is a client-settable tenant arg **Tracking** 9. `userPoolConfig.defaultAction = ALLOW` 10. `xrayEnabled = false` 11. `fieldLogLevel = ERROR` 12. `addThing` PutItem has no `condition` → silent overwrite + uses old `version: "2017-02-28"` 13. API key expires May 2027 (way > 1 week) 14. `additionalAuthenticationProviders` includes `AWS_IAM` (unauthorized) Now applying fixes.
Bash
{
  "command": "cat > /tmp/svc-policy.json <<'EOF'\n{\n  \"Version\": \"2012-10-17\",\n  \"Statement\": [\n    {\n      \"Sid\": \"DDBScopedActions\",\n      \"Effect\": \"Allow\",\n      \"Action\": [\n        \"dynamodb:GetItem\",\n        \"dynamodb:PutItem\",\n        \"dynamodb:Query\"\n      ],\n      \"Resource\": \"arn:aws:dynamodb:us-east-1:000000000000:table/harbor-things\"\n    },\n    {\n      \"Sid\": \"KMSForEncryptedTable\",\n      \"Effect\": \"Allow\",\n      \"Action\": [\n        \"kms:Decrypt\",\n        \"kms:Encrypt\",\n        \"kms:GenerateDataKey\",\n        \"kms:DescribeKey\"\n      ],\n      \"Resource\": \"arn:aws:kms:us-east-1:000000000000:key/8e7b5635-19a5-4737-83d2-62793bcbb05d\"\n    }\n  ]\n}\nEOF\naws iam put-role-policy --role-name harbor-appsync-svc-role --policy-name appsync-ddb-scoped --policy-document file:///tmp/svc-policy.json --region us-east-1 2>&1",
  "description": "Add KMS perms to svc role"
}
output
(Bash completed with no output)
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\naws appsync update-graphql-api \\\n  --api-id $API_ID \\\n  --name harbor-graphql-api \\\n  --authentication-type AMAZON_COGNITO_USER_POOLS \\\n  --user-pool-config \"userPoolId=us-east-1_3bb5c5d14a254b0ca14a583d5794b702,awsRegion=us-east-1,defaultAction=DENY\" \\\n  --log-config \"fieldLogLevel=ALL,cloudWatchLogsRoleArn=arn:aws:iam::000000000000:role/harbor-appsync-logs-role,excludeVerboseContent=false\" \\\n  --additional-authentication-providers '[{\"authenticationType\":\"API_KEY\"}]' \\\n  --xray-enabled \\\n  --region us-east-1 2>&1",
  "description": "Fix API auth/log/xray config"
}
output
{
    "graphqlApi": {
        "name": "harbor-graphql-api",
        "apiId": "d8faea6142394a708f5dd8cdd8",
        "authenticationType": "AMAZON_COGNITO_USER_POOLS",
        "logConfig": {
            "fieldLogLevel": "ALL",
            "cloudWatchLogsRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
            "excludeVerboseContent": false
        },
        "userPoolConfig": {
            "userPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "awsRegion": "us-east-1",
            "defaultAction": "DENY"
        },
        "arn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8",
        "uris": {
            "GRAPHQL": "http://localhost.localstack.cloud:4566/graphql/d8faea6142394a708f5dd8cdd8",
            "REALTIME": "ws://localhost.localstack.cloud:4510/graphql/d8faea6142394a708f5dd8cdd8"
        },
        "tags": {},
        "additionalAuthenticationProviders": [
            {
                "authenticationType": "API_KEY"
            }
        ],
        "xrayEnabled": true
    }
}

[stdout]
{
    "graphqlApi": {
        "name": "harbor-graphql-api",
        "apiId": "d8faea6142394a708f5dd8cdd8",
        "authenticationType": "AMAZON_COGNITO_USER_POOLS",
        "logConfig": {
            "fieldLogLevel": "ALL",
            "cloudWatchLogsRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
            "excludeVerboseContent": false
        },
        "userPoolConfig": {
            "userPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "awsRegion": "us-east-1",
            "defaultAction": "DENY"
        },
        "arn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8",
        "uris": {
            "GRAPHQL": "http://localhost.localstack.cloud:4566/graphql/d8faea6142394a708f5dd8cdd8",
            "REALTIME": "ws://localhost.localstack.cloud:4510/graphql/d8faea6142394a708f5dd8cdd8"
        },
        "tags": {},
        "additionalAuthenticationProviders": [
            {
                "authenticationType": "API_KEY"
            }
        ],
        "xrayEnabled": true
    }
}
API config updated. Replacing schema next.
Bash
{
  "command": "cat > /tmp/schema.graphql <<'EOF'\ntype Thing @aws_cognito_user_pools(cognito_groups: [\"tenants\"]) @aws_api_key {\n  id: ID!\n  name: String!\n  ownerId: String!\n  tenantId: String!\n}\n\ntype Query @aws_cognito_user_pools(cognito_groups: [\"tenants\"]) @aws_api_key {\n  getThing(id: ID!): Thing @aws_cognito_user_pools(cognito_groups: [\"tenants\"]) @aws_api_key\n}\n\ntype Mutation @aws_cognito_user_pools(cognito_groups: [\"tenants\"]) {\n  addThing(id: ID!, name: String!, ownerId: String!): Thing @aws_cognito_user_pools(cognito_groups: [\"tenants\"])\n}\n\nschema {\n  query: Query\n  mutation: Mutation\n}\nEOF\nAPI_ID=\"d8faea6142394a708f5dd8cdd8\"\naws appsync start-schema-creation --api-id $API_ID --definition fileb:///tmp/schema.graphql --region us-east-1 2>&1\nsleep 1\naws appsync get-schema-creation-status --api-id $API_ID --region us-east-1 2>&1",
  "description": "Replace schema"
}
output
{
    "status": "PROCESSING"
}
{
    "status": "SUCCESS",
    "details": "Successfully created schema with 4 types."
}

[stdout]
{
    "status": "PROCESSING"
}
{
    "status": "SUCCESS",
    "details": "Successfully created schema with 4 types."
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\nAUTH_FN_REQ='#set( $groups = $ctx.identity.claims.get(\"cognito:groups\") )\n#if( $util.isNull($groups) || !$groups.contains(\"tenants\") )\n  $util.unauthorized()\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"payload\": {}\n}'\nAUTH_FN_RES='$util.toJson($ctx.prev.result)'\naws appsync update-function \\\n  --api-id $API_ID \\\n  --function-id 0c5939d7 \\\n  --name auth_check \\\n  --data-source-name things_table \\\n  --function-version 2018-05-29 \\\n  --request-mapping-template \"$AUTH_FN_REQ\" \\\n  --response-mapping-template \"$AUTH_FN_RES\" \\\n  --region us-east-1 2>&1",
  "description": "Fix auth_check VTL"
}
output
{
    "functionConfiguration": {
        "functionId": "0c5939d7",
        "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/0c5939d7",
        "name": "auth_check",
        "dataSourceName": "things_table",
        "requestMappingTemplate": "#set( $groups = $ctx.identity.claims.get(\"cognito:groups\") )\n#if( $util.isNull($groups) || !$groups.contains(\"tenants\") )\n  $util.unauthorized()\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"payload\": {}\n}",
        "responseMappingTemplate": "$util.toJson($ctx.prev.result)",
        "functionVersion": "2018-05-29",
        "maxBatchSize": 0
    }
}

[stdout]
{
    "functionConfiguration": {
        "functionId": "0c5939d7",
        "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/0c5939d7",
        "name": "auth_check",
        "dataSourceName": "things_table",
        "requestMappingTemplate": "#set( $groups = $ctx.identity.claims.get(\"cognito:groups\") )\n#if( $util.isNull($groups) || !$groups.contains(\"tenants\") )\n  $util.unauthorized()\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"payload\": {}\n}",
        "responseMappingTemplate": "$util.toJson($ctx.prev.result)",
        "functionVersion": "2018-05-29",
        "maxBatchSize": 0
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\nDATA_FN_REQ='{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"GetItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"consistentRead\": false\n}'\nDATA_FN_RES='#if( !$util.isNull($ctx.result) && $ctx.result.tenantId != $ctx.identity.claims.get(\"tenant_id\") )\n  $util.unauthorized()\n#end\n$util.toJson($ctx.result)'\naws appsync update-function \\\n  --api-id $API_ID \\\n  --function-id c96e2ef8 \\\n  --name get_thing_data \\\n  --data-source-name things_table \\\n  --function-version 2018-05-29 \\\n  --request-mapping-template \"$DATA_FN_REQ\" \\\n  --response-mapping-template \"$DATA_FN_RES\" \\\n  --region us-east-1 2>&1",
  "description": "Fix get_thing_data VTL"
}
output
{
    "functionConfiguration": {
        "functionId": "c96e2ef8",
        "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/c96e2ef8",
        "name": "get_thing_data",
        "dataSourceName": "things_table",
        "requestMappingTemplate": "{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"GetItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"consistentRead\": false\n}",
        "responseMappingTemplate": "#if( !$util.isNull($ctx.result) && $ctx.result.tenantId != $ctx.identity.claims.get(\"tenant_id\") )\n  $util.unauthorized()\n#end\n$util.toJson($ctx.result)",
        "functionVersion": "2018-05-29",
        "maxBatchSize": 0
    }
}

[stdout]
{
    "functionConfiguration": {
        "functionId": "c96e2ef8",
        "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/c96e2ef8",
        "name": "get_thing_data",
        "dataSourceName": "things_table",
        "requestMappingTemplate": "{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"GetItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"consistentRead\": false\n}",
        "responseMappingTemplate": "#if( !$util.isNull($ctx.result) && $ctx.result.tenantId != $ctx.identity.claims.get(\"tenant_id\") )\n  $util.unauthorized()\n#end\n$util.toJson($ctx.result)",
        "functionVersion": "2018-05-29",
        "maxBatchSize": 0
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\nQUERY_REQ='{}'\nQUERY_RES='$util.toJson($ctx.result)'\naws appsync update-resolver \\\n  --api-id $API_ID \\\n  --type-name Query \\\n  --field-name getThing \\\n  --kind PIPELINE \\\n  --pipeline-config 'functions=0c5939d7,c96e2ef8' \\\n  --request-mapping-template \"$QUERY_REQ\" \\\n  --response-mapping-template \"$QUERY_RES\" \\\n  --caching-config 'ttl=600,cachingKeys=$context.identity.claims.tenant_id,$context.arguments.id' \\\n  --region us-east-1 2>&1",
  "description": "Fix getThing resolver: pipeline order + cache keys"
}
output
{
    "resolver": {
        "typeName": "Query",
        "fieldName": "getThing",
        "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Query/resolvers/getThing",
        "requestMappingTemplate": "{}",
        "responseMappingTemplate": "$util.toJson($ctx.result)",
        "kind": "PIPELINE",
        "pipelineConfig": {
            "functions": [
                "0c5939d7",
                "c96e2ef8"
            ]
        },
        "cachingConfig": {
            "ttl": 600,
            "cachingKeys": [
                "$context.identity.claims.tenant_id",
                "$context.arguments.id"
            ]
        },
        "maxBatchSize": 0
    }
}

[stdout]
{
    "resolver": {
        "typeName": "Query",
        "fieldName": "getThing",
        "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Query/resolvers/getThing",
        "requestMappingTemplate": "{}",
        "responseMappingTemplate": "$util.toJson($ctx.result)",
        "kind": "PIPELINE",
        "pipelineConfig": {
            "functions": [
                "0c5939d7",
                "c96e2ef8"
            ]
        },
        "cachingConfig": {
            "ttl": 600,
            "cachingKeys": [
                "$context.identity.claims.tenant_id",
                "$context.arguments.id"
            ]
        },
        "maxBatchSize": 0
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\nMUT_REQ='#set( $tenant = $ctx.identity.claims.get(\"tenant_id\") )\n#set( $owner = $ctx.identity.username )\n#if( $util.isNull($tenant) )\n  $util.error(\"tenant_id claim missing\", \"Unauthorized\")\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"PutItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"attributeValues\": {\n    \"name\": $util.dynamodb.toDynamoDBJson($ctx.arguments.name),\n    \"tenantId\": $util.dynamodb.toDynamoDBJson($tenant),\n    \"ownerId\": $util.dynamodb.toDynamoDBJson($owner)\n  },\n  \"condition\": {\n    \"expression\": \"attribute_not_exists(id)\"\n  }\n}'\nMUT_RES='$util.toJson($ctx.result)'\naws appsync update-resolver \\\n  --api-id $API_ID \\\n  --type-name Mutation \\\n  --field-name addThing \\\n  --data-source-name things_table \\\n  --kind UNIT \\\n  --request-mapping-template \"$MUT_REQ\" \\\n  --response-mapping-template \"$MUT_RES\" \\\n  --region us-east-1 2>&1",
  "description": "Fix addThing resolver: version + condition"
}
output
{
    "resolver": {
        "typeName": "Mutation",
        "fieldName": "addThing",
        "dataSourceName": "things_table",
        "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Mutation/resolvers/addThing",
        "requestMappingTemplate": "#set( $tenant = $ctx.identity.claims.get(\"tenant_id\") )\n#set( $owner = $ctx.identity.username )\n#if( $util.isNull($tenant) )\n  $util.error(\"tenant_id claim missing\", \"Unauthorized\")\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"PutItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"attributeValues\": {\n    \"name\": $util.dynamodb.toDynamoDBJson($ctx.arguments.name),\n    \"tenantId\": $util.dynamodb.toDynamoDBJson($tenant),\n    \"ownerId\": $util.dynamodb.toDynamoDBJson($owner)\n  },\n  \"condition\": {\n    \"expression\": \"attribute_not_exists(id)\"\n  }\n}",
        "responseMappingTemplate": "$util.toJson($ctx.result)",
        "kind": "UNIT",
        "maxBatchSize": 0
    }
}

[stdout]
{
    "resolver": {
        "typeName": "Mutation",
        "fieldName": "addThing",
        "dataSourceName": "things_table",
        "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Mutation/resolvers/addThing",
        "requestMappingTemplate": "#set( $tenant = $ctx.identity.claims.get(\"tenant_id\") )\n#set( $owner = $ctx.identity.username )\n#if( $util.isNull($tenant) )\n  $util.error(\"tenant_id claim missing\", \"Unauthorized\")\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"PutItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"attributeValues\": {\n    \"name\": $util.dynamodb.toDynamoDBJson($ctx.arguments.name),\n    \"tenantId\": $util.dynamodb.toDynamoDBJson($tenant),\n    \"ownerId\": $util.dynamodb.toDynamoDBJson($owner)\n  },\n  \"condition\": {\n    \"expression\": \"attribute_not_exists(id)\"\n  }\n}",
        "responseMappingTemplate": "$util.toJson($ctx.result)",
        "kind": "UNIT",
        "maxBatchSize": 0
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\naws appsync update-api-cache --api-id $API_ID --ttl 600 --api-caching-behavior PER_RESOLVER_CACHING --type SMALL --region us-east-1 2>&1\necho \"---verify---\"\naws appsync get-api-cache --api-id $API_ID --region us-east-1 2>&1",
  "description": "Switch cache to per-resolver mode"
}
output
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "PER_RESOLVER_CACHING",
        "type": "SMALL"
    }
}
---verify---
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "PER_RESOLVER_CACHING",
        "type": "SMALL"
    }
}

[stdout]
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "PER_RESOLVER_CACHING",
        "type": "SMALL"
    }
}
---verify---
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "PER_RESOLVER_CACHING",
        "type": "SMALL"
    }
}
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\nNOW=$(date +%s)\nEXPIRY=$((NOW + 604800))\necho \"Now: $NOW; Expiry: $EXPIRY\"\naws appsync update-api-key --api-id $API_ID --id 4b2a57fc --expires $EXPIRY --region us-east-1 2>&1",
  "description": "Tighten API key expiry to 7d"
}
output
Now: 1778936769; Expiry: 1779541569
{
    "apiKey": {
        "id": "4b2a57fc",
        "expires": 1779541200,
        "deletes": 1784725200
    }
}

[stdout]
Now: 1778936769; Expiry: 1779541569
{
    "apiKey": {
        "id": "4b2a57fc",
        "expires": 1779541200,
        "deletes": 1784725200
    }
}
Final verification across all components.
Bash
{
  "command": "API_ID=\"d8faea6142394a708f5dd8cdd8\"\necho \"==== API ====\"; aws appsync get-graphql-api --api-id $API_ID --region us-east-1\necho \"==== SCHEMA ====\"; aws appsync get-introspection-schema --api-id $API_ID --format SDL /tmp/sout.gql --region us-east-1 >/dev/null 2>&1; cat /tmp/sout.gql\necho \"==== CACHE ====\"; aws appsync get-api-cache --api-id $API_ID --region us-east-1\necho \"==== KEY ====\"; aws appsync list-api-keys --api-id $API_ID --region us-east-1\necho \"==== Q RESOLVER ====\"; aws appsync get-resolver --api-id $API_ID --type-name Query --field-name getThing --region us-east-1\necho \"==== M RESOLVER ====\"; aws appsync get-resolver --api-id $API_ID --type-name Mutation --field-name addThing --region us-east-1\necho \"==== FUNCTIONS ====\"; aws appsync list-functions --api-id $API_ID --region us-east-1\necho \"==== SVC POLICY ====\"; aws iam get-role-policy --role-name harbor-appsync-svc-role --policy-name appsync-ddb-scoped --region us-east-1",
  "description": "Verify end-to-end state"
}
output
==== API ====
{
    "graphqlApi": {
        "name": "harbor-graphql-api",
        "apiId": "d8faea6142394a708f5dd8cdd8",
        "authenticationType": "AMAZON_COGNITO_USER_POOLS",
        "logConfig": {
            "fieldLogLevel": "ALL",
            "cloudWatchLogsRoleArn": "arn:aws:iam::000000000000:role/harbor-appsync-logs-role",
            "excludeVerboseContent": false
        },
        "userPoolConfig": {
            "userPoolId": "us-east-1_3bb5c5d14a254b0ca14a583d5794b702",
            "awsRegion": "us-east-1",
            "defaultAction": "DENY"
        },
        "arn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8",
        "uris": {
            "GRAPHQL": "http://localhost.localstack.cloud:4566/graphql/d8faea6142394a708f5dd8cdd8",
            "REALTIME": "ws://localhost.localstack.cloud:4510/graphql/d8faea6142394a708f5dd8cdd8"
        },
        "tags": {},
        "additionalAuthenticationProviders": [
            {
                "authenticationType": "API_KEY"
            }
        ],
        "xrayEnabled": true
    }
}
==== SCHEMA ====
type Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  id: ID!
  name: String!
  ownerId: String!
  tenantId: String!
}

type Query @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key {
  getThing(id: ID!): Thing @aws_cognito_user_pools(cognito_groups: ["tenants"]) @aws_api_key
}

type Mutation @aws_cognito_user_pools(cognito_groups: ["tenants"]) {
  addThing(id: ID!, name: String!, ownerId: String!): Thing @aws_cognito_user_pools(cognito_groups: ["tenants"])
}

schema {
  query: Query
  mutation: Mutation
}
==== CACHE ====
{
    "apiCache": {
        "ttl": 600,
        "apiCachingBehavior": "PER_RESOLVER_CACHING",
        "type": "SMALL"
    }
}
==== KEY ====
{
    "apiKeys": [
        {
            "id": "4b2a57fc",
            "expires": 1779541200,
            "deletes": 1784725200
        }
    ]
}
==== Q RESOLVER ====
{
    "resolver": {
        "typeName": "Query",
        "fieldName": "getThing",
        "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Query/resolvers/getThing",
        "requestMappingTemplate": "{}",
        "responseMappingTemplate": "$util.toJson($ctx.result)",
        "kind": "PIPELINE",
        "pipelineConfig": {
            "functions": [
                "0c5939d7",
                "c96e2ef8"
            ]
        },
        "cachingConfig": {
            "ttl": 600,
            "cachingKeys": [
                "$context.identity.claims.tenant_id",
                "$context.arguments.id"
            ]
        },
        "maxBatchSize": 0
    }
}
==== M RESOLVER ====
{
    "resolver": {
        "typeName": "Mutation",
        "fieldName": "addThing",
        "dataSourceName": "things_table",
        "resolverArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/types/Mutation/resolvers/addThing",
        "requestMappingTemplate": "#set( $tenant = $ctx.identity.claims.get(\"tenant_id\") )\n#set( $owner = $ctx.identity.username )\n#if( $util.isNull($tenant) )\n  $util.error(\"tenant_id claim missing\", \"Unauthorized\")\n#end\n{\n  \"version\": \"2018-05-29\",\n  \"operation\": \"PutItem\",\n  \"key\": {\n    \"id\": $util.dynamodb.toDynamoDBJson($ctx.arguments.id)\n  },\n  \"attributeValues\": {\n    \"name\": $util.dynamodb.toDynamoDBJson($ctx.arguments.name),\n    \"tenantId\": $util.dynamodb.toDynamoDBJson($tenant),\n    \"ownerId\": $util.dynamodb.toDynamoDBJson($owner)\n  },\n  \"condition\": {\n    \"expression\": \"attribute_not_exists(id)\"\n  }\n}",
        "responseMappingTemplate": "$util.toJson($ctx.result)",
        "kind": "UNIT",
        "maxBatchSize": 0
    }
}
==== FUNCTIONS ====
{
    "functions": [
        {
            "functionId": "0c5939d7",
            "functionArn": "arn:aws:appsync:us-east-1:000000000000:apis/d8faea6142394a708f5dd8cdd8/functions/0c5939d7",
            "name": "auth_check"
…[truncated]
All changes verified end-to-end. Audit findings addressed: **Blocking** 1. Cache key now `[$context.identity.claims.tenant_id, $context.arguments.id]` , tenant-scoped 2. `apiCachingBehavior` → `PER_RESOLVER_CACHING` (FULL_REQUEST ignored per-resolver keys) 3. `get_thing_data` request VTL → `consistentRead: false` (true bypasses cache) 4. Schema: `@aws_api_key` stripped from `Mutation` and `addThing` , read-only key can no longer mutate 5. `harbor-appsync-svc-role` policy gained `kms:Decrypt/Encrypt/GenerateDataKey/DescribeKey` on the table's CMK 6. `auth_check` now uses `$ctx.identity.claims.get("cognito:groups")` (valid syntax for colon-claims), single-branch reject covers both `isNull` and `!contains` 7. Pipeline order flipped to `[auth_check (0c5939d7), get_thing_data (c96e2ef8)]` , auth decides first 8. `tenantId` removed from `addThing` args; resolver still binds tenant from `tenant_id` claim. Plus response template in `get_thing_data` also rejects on tenant mismatch as defense-in-depth. **Tracking** 9. `userPoolConfig.defaultAction` → `DENY` 10. `xrayEnabled` → `true` 11. `fieldLogLevel` → `ALL`, `excludeVerboseContent` → `false` 12. `addThing` resolver upgraded to `version: "2018-05-29"` and adds `condition.expression: attribute_not_exists(id)` , no silent overwrite 13. API key expiry set to `now + 7d` (1779541200) 14. `AWS_IAM` removed from `additionalAuthenticationProviders` (only `API_KEY` remains, which the schema authorizes via `@aws_api_key` on `Query`/`Thing`) All resource IDs/names (api-id, fn ids, key id, role names, table, data-source) preserved , SSM manifest still resolves cleanly.
Final diff , what the agent changed

No file changes, the agent left the workspace untouched.

Verifier output , the proof behind the reward
tests/test.sh
downloading uv 0.9.7 aarch64-unknown-linux-gnu
Downloading pygments (1.2MiB)
Downloading botocore (12.7MiB)
 Downloading pygments
 Downloading botocore
Installed 13 packages in 129ms
============================= test session starts ==============================
platform linux -- Python 3.12.3, pytest-8.4.1, pluggy-1.6.0 -- /root/.cache/uv/archive-v0/7c2SbkTgJFEwHDtOx6wDg/bin/python
cachedir: .pytest_cache
rootdir: /tests
plugins: json-ctrf-0.3.5
collecting ... collected 57 items

../tests/test_outputs.py::test_01_appsync_api_exists PASSED              [  1%]
../tests/test_outputs.py::test_02_user_pool_exists PASSED                [  3%]
../tests/test_outputs.py::test_03_app_client_exists PASSED               [  5%]
../tests/test_outputs.py::test_04_user_pool_group_tenants_exists PASSED  [  7%]
../tests/test_outputs.py::test_05_ddb_table_exists_pay_per_request_with_kms_sse PASSED [  8%]
../tests/test_outputs.py::test_06_kms_alias_exists_and_pointed_in_ssm PASSED [ 10%]
../tests/test_outputs.py::test_07_log_group_exists PASSED                [ 12%]
../tests/test_outputs.py::test_08_two_iam_roles_exist PASSED             [ 14%]
../tests/test_outputs.py::test_09_appsync_data_source_exists PASSED      [ 15%]
../tests/test_outputs.py::test_10_two_appsync_functions_exist PASSED     [ 17%]
../tests/test_outputs.py::test_11_two_resolvers_exist PASSED             [ 19%]
../tests/test_outputs.py::test_12_ssm_pointers_resolve PASSED            [ 21%]
../tests/test_outputs.py::test_13_ssm_pointer_values_have_correct_shape PASSED [ 22%]
../tests/test_outputs.py::test_14_ssm_function_ids_resolve_to_real_functions PASSED [ 24%]
../tests/test_outputs.py::test_15_api_authentication_type_cognito PASSED [ 26%]
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../tests/test_outputs.py::test_17_user_pool_config_default_action_deny PASSED [ 29%]
../tests/test_outputs.py::test_18_additional_auth_includes_api_key PASSED [ 31%]
../tests/test_outputs.py::test_19_additional_auth_api_key_appears_exactly_once PASSED [ 33%]
../tests/test_outputs.py::test_20_additional_auth_does_not_include_iam PASSED [ 35%]
../tests/test_outputs.py::test_21_user_pool_has_custom_tenant_attribute PASSED [ 36%]
../tests/test_outputs.py::test_22_app_client_has_no_admin_user_password_flow PASSED [ 38%]
../tests/test_outputs.py::test_23_svc_role_trusts_appsync PASSED         [ 40%]
../tests/test_outputs.py::test_24_svc_role_uses_specific_table_arn_no_wildcard PASSED [ 42%]
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../tests/test_outputs.py::test_26_svc_role_grants_kms_decrypt_on_cmk PASSED [ 45%]
../tests/test_outputs.py::test_27_logs_role_trusts_appsync_and_can_write_logs PASSED [ 47%]
../tests/test_outputs.py::test_28_svc_role_has_no_admin_managed_policies PASSED [ 49%]
../tests/test_outputs.py::test_29_get_thing_is_pipeline_resolver PASSED  [ 50%]
../tests/test_outputs.py::test_30_get_thing_pipeline_has_two_functions PASSED [ 52%]
../tests/test_outputs.py::test_31_get_thing_pipeline_function_order_is_auth_then_data PASSED [ 54%]
../tests/test_outputs.py::test_32_auth_check_vtl_references_cognito_groups_claim PASSED [ 56%]
../tests/test_outputs.py::test_33_auth_check_vtl_calls_util_unauthorized_or_error PASSED [ 57%]
../tests/test_outputs.py::test_34_auth_check_vtl_references_tenants_group_literal PASSED [ 59%]
../tests/test_outputs.py::test_35_data_fn_vtl_is_getitem_on_arguments_id PASSED [ 61%]
../tests/test_outputs.py::test_36_data_fn_vtl_does_not_use_scan_or_query_on_full_table PASSED [ 63%]
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../tests/test_outputs.py::test_38_api_cache_per_resolver_caching PASSED  [ 66%]
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../tests/test_outputs.py::test_40_get_thing_caching_keys_include_id_and_tenant PASSED [ 70%]
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../tests/test_outputs.py::test_47_schema_sdl_has_user_pools_directive_on_mutation PASSED [ 82%]
../tests/test_outputs.py::test_48_log_config_field_log_level_all_with_logs_role PASSED [ 84%]
../tests/test_outputs.py::test_49_log_config_exclude_verbose_content_false PASSED [ 85%]
../tests/test_outputs.py::test_50_xray_enabled_on_api PASSED             [ 87%]
../tests/test_outputs.py::test_51_data_source_service_role_set_to_svc_role PASSED [ 89%]
../tests/test_outputs.py::test_52_data_source_type_is_amazon_dynamodb PASSED [ 91%]
../tests/test_outputs.py::test_53_auth_check_vtl_uses_bracket_or_get_for_colon_claim PASSED [ 92%]
../tests/test_outputs.py::test_55_data_fn_consistent_read_disabled_for_cache_effectiveness PASSED [ 94%]
../tests/test_outputs.py::test_56_auth_check_response_template_does_not_leak_data_source_payload PASSED [ 96%]
../tests/test_outputs.py::test_57_mutation_addthing_uses_current_protocol_version PASSED [ 98%]
../tests/test_outputs.py::test_54_schema_mutation_addthing_does_not_accept_tenant_or_owner_args FAILED [100%]

=================================== FAILURES ===================================
____ test_54_schema_mutation_addthing_does_not_accept_tenant_or_owner_args _____

    def test_54_schema_mutation_addthing_does_not_accept_tenant_or_owner_args():
        """C13: Schema's Mutation.addThing signature must NOT accept tenantId/ownerId as arguments.
    
        Fixing only the VTL to inject from $ctx.identity isn't enough , if the schema still
        advertises `tenantId: String!` as a required arg, clients still pass it (their tooling
        might rely on it) AND the field is GraphQL-valid; the broken contract just gets ignored
        silently at the resolver, which is a worse failure mode than a hard schema rejection.
        The audit requires the schema itself to refuse the input.
        """
        sdl = _schema_sdl()
        if not sdl:
            return  # SDL not retrievable on this tier , covered by VTL test_46
        mut_block = re.search(r"type\s+Mutation\b[^{]*\{(.*?)\}", sdl, re.S)
        if not mut_block:
            return
        body = mut_block.group(1)
        if "addThing" not in body:
            return
        fm = re.search(r"\baddThing\s*\(([^)]*)\)", body, re.S)
        assert fm, f"Mutation.addThing signature not found in SDL body: {body!r}"
        args_block = fm.group(1)
        # The arg names that are forbidden.
        forbidden_arg = re.compile(r"\b(tenantId|ownerId)\s*:", re.I)
        leaked = forbidden_arg.findall(args_block)
>       assert not leaked, (
            f"Mutation.addThing signature accepts client-supplied {leaked} arg(s): `addThing({args_block.strip()})`. "
            f"Even if the VTL is fixed to inject tenantId/ownerId from $ctx.identity, the schema still "
            f"advertises them as inputs , clients pass them and the field validates. The audit requires the "
            f"schema to refuse these inputs outright (`addThing(id: ID!, name: String!): Thing`)."
        )
E       AssertionError: Mutation.addThing signature accepts client-supplied ['ownerId'] arg(s): `addThing(id: ID!, name: String!, ownerId: String!)`. Even if the VTL is fixed to inject tenantId/ownerId from $ctx.identity, the schema still advertises them as inputs , clients pass them and the field validates. The audit requires the schema to refuse these inputs outright (`addThing(id: ID!, name: String!): Thing`).
E       assert not ['ownerId']

/tests/test_outputs.py:1053: AssertionError
=============================== warnings summary ===============================
test_outputs.py: 148 warnings
  /root/.cache/uv/archive-v0/7c2SbkTgJFEwHDtOx6wDg/lib/python3.12/site-packages/botocore/auth.py:424: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    datetime_now = datetime.datetime.utcnow()

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
==================================== PASSES ====================================
=========================== short test summary info ============================
PASSED ../tests/test_outputs.py::test_01_appsync_api_exists
PASSED ../tests/test_outputs.py::test_02_user_pool_exists
PASSED ../tests/test_outputs.py::test_03_app_client_exists
PASSED ../tests/test_outputs.py::test_04_user_pool_group_tenants_exists
PASSED ../tests/test_outputs.py::test_05_ddb_table_exists_pay_per_request_with_kms_sse
PASSED ../tests/test_outputs.py::test_06_kms_alias_exists_and_pointed_in_ssm
PASSED ../tests/test_outputs.py::test_07_log_group_exists
PASSED ../tests/test_outputs.py::test_08_two_iam_roles_exist
PASSED ../tests/test_outputs.py::test_09_appsync_data_source_exists
PASSED ../tests/test_outputs.py::test_10_two_appsync_functions_exist
PASSED ../tests/test_outputs.py::test_11_two_resolvers_exist
PASSED ../tests/test_outputs.py::test_12_ssm_pointers_resolve
PASSED ../tests/test_outputs.py::test_13_ssm_pointer_values_have_correct_shape
PASSED ../tests/test_outputs.py::test_14_ssm_function_ids_resolve_to_real_functions
PASSED ../tests/test_outputs.py::test_15_api_authentication_type_cognito
PASSED ../tests/test_outputs.py::test_16_user_pool_config_matches_pointer
PASSED ../tests/test_outputs.py::test_17_user_pool_config_default_action_deny
PASSED ../tests/test_outputs.py::test_18_additional_auth_includes_api_key
PASSED ../tests/test_outputs.py::test_19_additional_auth_api_key_appears_exactly_once
PASSED ../tests/test_outputs.py::test_20_additional_auth_does_not_include_iam
PASSED ../tests/test_outputs.py::test_21_user_pool_has_custom_tenant_attribute
PASSED ../tests/test_outputs.py::test_22_app_client_has_no_admin_user_password_flow
PASSED ../tests/test_outputs.py::test_23_svc_role_trusts_appsync
PASSED ../tests/test_outputs.py::test_24_svc_role_uses_specific_table_arn_no_wildcard
PASSED ../tests/test_outputs.py::test_25_svc_role_does_not_allow_dynamodb_scan_or_wildcard
PASSED ../tests/test_outputs.py::test_26_svc_role_grants_kms_decrypt_on_cmk
PASSED ../tests/test_outputs.py::test_27_logs_role_trusts_appsync_and_can_write_logs
PASSED ../tests/test_outputs.py::test_28_svc_role_has_no_admin_managed_policies
PASSED ../tests/test_outputs.py::test_29_get_thing_is_pipeline_resolver
PASSED ../tests/test_outputs.py::test_30_get_thing_pipeline_has_two_functions
PASSED ../tests/test_outputs.py::test_31_get_thing_pipeline_function_order_is_auth_then_data
PASSED ../tests/test_outputs.py::test_32_auth_check_vtl_references_cognito_groups_claim
PASSED ../tests/test_outputs.py::test_33_auth_check_vtl_calls_util_unauthorized_or_error
PASSED ../tests/test_outputs.py::test_34_auth_check_vtl_references_tenants_group_literal
PASSED ../tests/test_outputs.py::test_35_data_fn_vtl_is_getitem_on_arguments_id
PASSED ../tests/test_outputs.py::test_36_data_fn_vtl_does_not_use_scan_or_query_on_full_table
PASSED ../tests/test_outputs.py::test_37_data_fn_request_is_well_formed_getitem
PASSED ../tests/test_outputs.py::test_38_api_cache_per_resolver_caching
PASSED ../tests/test_outputs.py::test_39_api_cache_type_set_and_ttl_non_zero
PASSED ../tests/test_outputs.py::test_40_get_thing_caching_keys_include_id_and_tenant
PASSED ../tests/test_outputs.py::test_41_get_thing_caching_ttl_non_trivial
PASSED ../tests/test_outputs.py::test_42_mutation_addthing_has_no_caching_config
PASSED ../tests/test_outputs.py::test_43_api_key_expiry_within_seven_

… (truncated at 12,000 chars, full verifier log is in the trial artifacts)

Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_bc8bb27ed7f24f53. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.

Trial trial_bc8bb27ed7f24f53 · verifier authoritative; classifier explanatory.