connecting-lambda-to-api-gateway

Connects an existing AWS Lambda function to Amazon API Gateway by creating a REST or HTTP API with resource/method setup, Lambda proxy integration…

Skill by awsOfficial

IndexedApache-2.0★ 3,049

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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Connects an existing AWS Lambda function to Amazon API Gateway by creating a REST or HTTP API with resource/method setup, Lambda proxy integration, permissions, and deployment. Always use this skill when connecting Lambda to API Gateway — it handles CORS, throttling, access logging, and production security hardening that are easy to miss.

Use cases: backend, cloud, security

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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~/.claude/skills/connecting-lambda-to-api-gateway

What's inside

Skill name: connecting-lambda-to-api-gateway
Description: Connects an existing AWS Lambda function to Amazon API Gateway by creating a REST or HTTP API with resource/method setup, Lambda proxy integration, permissions, and deployment. Always use this skill when connecting Lambda to API Gateway — it handles CORS, throttling, access logging, and production security hardening that are easy to miss.
License: Apache-2.0
Instructions: 35 lines in SKILL.md · view on GitHub

Files (2)

SKILL.md
lambda-gateway-api.md · references/

SKILL.md (first lines)

# Connecting Lambda to API Gateway

## Overview

Domain expertise for creating Amazon API Gateway REST APIs and connecting them to
existing Lambda functions. Covers API creation, resource and method setup, Lambda
proxy integration, CORS configuration, security controls, deployment, and testing.

## Connect a Lambda function to API Gateway

To create a REST API and wire it to a Lambda function, follow the procedure exactly.
See [Lambda to API Gateway connection procedure](references/lambda-gateway-api.md).

The procedure supports configurable authorization types (NONE, AWS_IAM,
COGNITO_USER_POOLS, CUSTOM), optional API key requirements, CORS setup, and
production security hardening including throttling and access logging.

## Troubleshooting

### 502 Bad Gateway

The Lambda function must return a proxy-compatible response with `statusCode`,
`headers`, and a stringified `body`. See the full procedure for format details.

### Permission denied invoking Lambda

Ensure `lambda:InvokeFunction` permission was added with the correct API Gateway
source ARN. See the full procedure for details.

### CORS errors in browser

Verify `enable_cors` was set to true, the OPTIONS method was created, and CORS
headers are configured in both method and integration responses.

From aws/agent-toolkit-for-aws, Apache-2.0.

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Stars: 3,049
Forks: 394
Open issues: 40
Last commit (this folder): May 13, 2026 (5 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License: Apache-2.0
Repository: github.com/aws/agent-toolkit-for-aws
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: GitHub github-graphql

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connecting-lambda-to-api-gateway skill. Agent Mart. https://agentmart.dev/skills/aws-connecting-lambda-to-api-gateway (last updated 2026-10-24)