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Connecting Lambda To Dynamodb

AWSOfficialPublished by AWS

  • Skill
  • Workflow
  • Cloud and DevOps
  • Apache-2.0
  • No issues found
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From the author

Connects an AWS Lambda function to DynamoDB with IAM roles, stream event source mapping, and read/write permissions. Use when setting up Lambda-DynamoDB integration, processing DynamoDB stream events, or deploying serverless event-driven architectures.
— the description by AWS

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

This skill provides a structured workflow for connecting AWS Lambda functions to DynamoDB tables. It guides the user through the creation of necessary infrastructure, including IAM execution roles with appropriate permissions, DynamoDB tables with stream support, and the event source mapping required for event-driven processing. The skill includes validation steps, infrastructure confirmation, and troubleshooting guidance for common issues like permission errors or trigger failures.

What it does

  • Creates IAM execution roles with necessary DynamoDB and CloudWatch permissions
  • Provisions DynamoDB tables with stream support enabled
  • Sets up event source mapping between DynamoDB streams and Lambda functions
  • Generates Python-based Lambda function code for processing stream events
  • Validates AWS resource naming conventions and tool availability
  • Provides troubleshooting steps for common integration errors

When to use it

  • When setting up a new serverless event-driven architecture on AWS
  • When you need to trigger a Lambda function based on DynamoDB data changes
  • When automating the deployment of integrated Lambda and DynamoDB resources
  • When troubleshooting existing Lambda-DynamoDB connectivity or permission issues

Advantages

  • Ensures consistent infrastructure setup through a standardized procedure
  • Reduces manual configuration errors by validating parameters and naming conventions
  • Includes explicit user approval steps for infrastructure changes
  • Provides built-in troubleshooting paths for common deployment failures

Usage examples

“I need to connect a new Lambda function named order-processor to a DynamoDB table called orders.”
The agent will initiate the workflow, request the required parameters, verify tool availability, and guide you through the creation of the IAM role, table, and event mapping.
“My Lambda function is not triggering from my DynamoDB stream. Can you help?”
The agent will guide you through troubleshooting steps, including verifying the event source mapping status, stream view types, and IAM role permissions.

Install

  1. Download the skill as a ZIP:

    https://autogineer.com/agent-skills/aws/connecting-lambda-to-dynamodb/download

  2. Unzip it into the cross-client skills folder of your project:

    mkdir -p .agents/skills && unzip connecting-lambda-to-dynamodb.zip -d .agents/skills

Documentation by AWS

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.

Permission denied errors

Check the IAM role has AWSLambdaDynamoDBExecutionRole attached and the trust policy allows Lambda to assume it.

Function timeout issues

Increase the timeout setting or adjust the batch size in the event source mapping.

Files

Requirements and compatibility

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Security

No issues found by our static scan· No issues found

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Attribution and licence

Published by
AWS
Publisher
AWS (Official)
Source
aws/agent-toolkit-for-aws · skills/specialized-skills/serverless-skills/connecting-lambda-to-dynamodb · commit 0a218f8
Licence
Apache License 2.0 (redistribution allowed)
  • LICENSE (added by AutoGineer from LICENSE)
  • NOTICE (added by AutoGineer from NOTICE)
  • ATTRIBUTION.md (written by AutoGineer)
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Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download connecting-lambda-to-dynamodb.zip