Connecting Lambda To Dynamodb

This handles the full setup for connecting Lambda to DynamoDB, including IAM execution roles, stream configuration, and event source mapping. You'd use this when building event-driven architectures where Lambda needs to react to table changes or just read/write data. The skill includes a specific connection procedure and covers the usual gotchas like permission denied errors, inactive event source mappings, and timeout issues from incorrect batch sizes. It's focused on the infrastructure wiring rather than application logic, so if you already know what policies and stream settings you need, this should get everything connected properly without hunting through AWS docs.

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last updated: Aug 21, 2026

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$ npx -y skills add aws/agent-toolkit-for-aws --skill connecting-lambda-to-dynamodb --agent claude-code

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Connecting Lambda to DynamoDB

Overview

Domain expertise for connecting AWS Lambda functions to DynamoDB tables, including IAM execution role creation, function deployment, DynamoDB stream configuration, and event source mapping setup.

Connect a Lambda function to DynamoDB

To set up end-to-end Lambda-DynamoDB integration with IAM roles, streams, and event source mapping, follow the procedure exactly. See Lambda-DynamoDB connection procedure.

Troubleshooting

Lambda function not triggering

Verify the event source mapping is active, DynamoDB streams are enabled with the correct view type, and the execution role has proper permissions. See the full procedure for details.