AgentCore Evaluator CloudFormation resource is not supported in ap-northeast-1

agentcore add evaluator → agentcore deploy produced this error:

Output

CDK deploy failed: ❌ AgentCore-MyProject-default failed: ValidationError:
Template format error: Unrecognized resource types: [AWS::BedrockAgentCore::Evaluator]

The AWS::BedrockAgentCore::Evaluator CloudFormation resource type isn't registered in ap-northeast-1.

Terminal

# ap-northeast-1: not registered
aws cloudformation describe-type \
  --type RESOURCE \
  --type-name AWS::BedrockAgentCore::Evaluator \
  --region ap-northeast-1
# => TypeNotFoundException
 
# us-east-1: registered
aws cloudformation describe-type \
  --type RESOURCE \
  --type-name AWS::BedrockAgentCore::Evaluator \
  --region us-east-1 \
  --query 'ProvisioningType' --output text
# => FULLY_MUTABLE

Switch aws-targets.json to us-east-1 for Evaluator. Runtime and Memory work fine in ap-northeast-1 — this is Evaluator-specific.