# AWS Lambda Durable Functions

Build resilient, long-running, multi-step applications with AWS Lambda durable...

- Repository: https://github.com/awslabs/agent-plugins (933 stars)
- Category: Testing
- License: Apache-2.0
- Last updated: 2026-10-15
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add awslabs/agent-plugins --skill aws-lambda-durable-functions -g -a claude-code -y`
Codex: `npx skills add awslabs/agent-plugins --skill aws-lambda-durable-functions -g -a codex -y`
Cursor: `npx skills add awslabs/agent-plugins --skill aws-lambda-durable-functions -g -a cursor -y`
Gemini CLI: `npx skills add awslabs/agent-plugins --skill aws-lambda-durable-functions -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add awslabs/agent-plugins`

## Description

Build resilient, long-running, multi-step applications with AWS Lambda durable functions with automatic state persistence, retry logic, and orchestration for long-running executions. Covers the critical replay model, step operations, wait/callback patterns, error handling with saga pattern, testing with LocalDurableTestRunner. Triggers on phrases like: lambda durable functions, workflow orchestration, state machines, retry/checkpoint patterns, long-running stateful Lambda functions, saga pattern, human-in-the-loop callbacks, and reliable serverless applications.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# AWS Lambda durable functions

Build resilient multi-step applications and AI workflows that can execute for up to 1 year while maintaining reliable progress despite interruptions.

## Onboarding

### Step 1: Validate Prerequisites

Before using AWS Lambda durable functions, verify:

1. **AWS CLI** is installed (2.33.22 or higher) and configured:

   ```bash
   aws --version
   aws sts get-caller-identity
   ```

2. **Runtime environment** is ready:
   - For TypeScript/JavaScript: Node.js 22+ (`node --version`)
   - For Python: Python 3.11+ (`python --version`. Note that currently only Lambda runtime environments 3.13+ come with the Durable Execution SDK pre-installed. 3.11 is the min supported Python version by the Durable SDK itself, however, you could use OCI to bring your own container image with your own Python runtime + Durable SDK.)

3. **Deployment capability** exists (one of):
   - AWS SAM CLI (`sam --version`) 1.153.1 or higher
   - AWS CDK (`cdk --version`) v2.237.1 or higher
   - Direct Lambda deployment access

### Step 2: Select language and IaC framework

### Language Selection

Default: TypeScript

Override syntax:

- "use Python" → Generate Python code
- "use JavaScript" → Generate JavaScript code

When not specified, ALWAYS use TypeScript

### IaC framework selection

Default: CDK

Override syntax:

- "use CloudFormation" → Generate YAML templates
- "use SAM" → Generate YAML templates

When not specified, ALWAYS use CDK

### Error Scenarios

#### Unsupported Language

- List detected language
- State: "Durable Execution SDK is not yet available for [framework]"
- Suggest supported languages as alternatives

#### Unsupported IaC Framework

- List detected framework
- State: "[framework] might not support Lambda durable functions yet"
- Suggest supported frameworks as alternatives

### Serverless MCP Server Unavailable

The rest: https://github.com/awslabs/agent-plugins/blob/HEAD/plugins/aws-serverless/skills/aws-lambda-durable-functions/SKILL.md