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AWS Lambda Durable Functions

AWS LabsOfficialPublished by AWS Labs

  • Skill
  • Tool integration
  • Cloud and DevOps
  • Apache-2.0
  • Low risk
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From the author

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.
— the description by AWS Labs

AutoGineer summary

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

The AWS Lambda Durable Functions skill provides a framework for orchestrating complex, multi-step applications that require long-running execution, automatic state persistence, and robust error handling. It enables developers to implement patterns like sagas, human-in-the-loop callbacks, and retries while ensuring progress is maintained across interruptions. The skill covers the replay model, step operations, and testing strategies for both TypeScript and Python environments, helping developers build reliable serverless architectures that can run for up to a year.

What it does

  • Orchestrates multi-step serverless workflows with automatic state persistence.
  • Implements complex error handling patterns including sagas and circuit breakers.
  • Supports long-running executions with wait/callback patterns and human-in-the-loop integration.
  • Provides a replay-aware environment to ensure determinism in distributed serverless functions.
  • Offers testing utilities via LocalDurableTestRunner for local development and validation.
  • Enables dynamic step naming and advanced concurrency patterns for AI agents and batch processing.

When to use it

  • When building workflows that need to persist state across multiple Lambda invocations.
  • When implementing long-running processes that require wait times or external system callbacks.
  • When you need robust retry logic and error recovery for distributed serverless tasks.
  • When developing complex state machines or saga-based transaction management in AWS.
  • When creating AI agent workflows that require reasoning and multi-step tool execution.

Advantages

  • Maintains reliable progress for workflows that may run for up to one year.
  • Simplifies complex orchestration logic through a structured replay model.
  • Provides built-in support for idempotent operations and retry strategies.
  • Enables local testing of distributed stateful logic before cloud deployment.
  • Reduces boilerplate code for managing state, timeouts, and error recovery.

Usage examples

“How do I implement a retry strategy for a database update in a durable function?”
The agent provides a code example using context.step with retry options, explaining how to classify errors as transient or permanent to ensure only appropriate operations are retried.
“Show me how to wait for an external callback in a Python durable function.”
The agent generates a Python snippet using context.wait_for_callback, including configuration for timeouts and fallback logic to handle cases where the callback is not received.
“I am getting a non-deterministic error in my Lambda function, how do I fix it?”
The agent explains the replay model, identifies non-deterministic code (like Date.now or API calls) outside of steps, and provides a refactored code block moving those calls into context.step.
“How do I test my durable function locally?”
The agent guides the user to use the LocalDurableTestRunner, providing a template for instantiating the runner with their handler and executing test cases to verify replay behavior.

Install

  1. Download the skill as a ZIP:

    https://autogineer.com/agent-skills/awslabs/aws-lambda-durable-functions/download

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

    mkdir -p .agents/skills && unzip aws-lambda-durable-functions.zip -d .agents/skills

Documentation by AWS Labs

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:

    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

  • Inform user: "AWS Serverless MCP not responding"

  • Ask: "Proceed without MCP support?"

  • DO NOT continue without user confirmation

Step 3: Install SDK

For TypeScript/JavaScript:

npm install @aws/durable-execution-sdk-js
npm install --save-dev @aws/durable-execution-sdk-js-testing

For Python:

pip install aws-durable-execution-sdk-python
pip install aws-durable-execution-sdk-python-testing

When to Load Reference Files

Load the appropriate reference file based on what the user is working on:

  • Getting started, basic setup, example, ESLint, or Jest setup -> see getting-started.md

  • Understanding replay model, determinism, or non-deterministic errors -> see replay-model-rules.md

  • Creating steps, atomic operations, or retry logic -> see step-operations.md

  • Waiting, delays, callbacks, external systems, or polling -> see wait-operations.md

  • Parallel execution, map operations, batch processing, or concurrency -> see concurrent-operations.md

  • Error handling, retry strategies, saga pattern, or compensating transactions -> see error-handling.md

  • Advanced error handling, timeout handling, circuit breakers, or conditional retries -> see advanced-error-handling.md

  • Testing, local testing, cloud testing, test runner, or flaky tests -> see testing-patterns.md

  • Deployment, CloudFormation, CDK, SAM, log groups, deploy, or infrastructure -> see deployment-iac.md

  • Advanced patterns, GenAI agents, completion policies, step semantics, or custom serialization -> see advanced-patterns.md

  • troubleshooting, stuck execution, failed execution, debug execution ID, execution history, execution error, why did my execution fail, execution timed out, callback not received, diagnose execution, or root cause execution -> see troubleshooting-executions.md

Quick Reference

Basic Handler Pattern

TypeScript:

import { withDurableExecution, DurableContext } from '@aws/durable-execution-sdk-js';

export const handler = withDurableExecution(async (event, context: DurableContext) => {
  const result = await context.step('process', async () => processData(event));
  return result;
});

Python:

from aws_durable_execution_sdk_python import durable_execution, DurableContext

@durable_execution
def handler(event: dict, context: DurableContext) -> dict:
    result = context.step(lambda _: process_data(event), name='process')
    return result
Critical Rules

  1. All non-deterministic code MUST be in steps (Date.now, Math.random, API calls)

  2. Cannot nest durable operations - use runInChildContext to group operations

  3. Closure mutations are lost on replay - return values from steps

  4. Side effects outside steps repeat - use context.logger (replay-aware)

Python API Differences

The Python SDK differs from TypeScript in several key areas:

  • Steps: Use @durable_step decorator + context.step(my_step(args)), or inline context.step(lambda _: ..., name='...'). Prefer the decorator for automatic step naming.

  • Wait: context.wait(duration=Duration.from_seconds(n), name='...')

  • Exceptions: ExecutionError (permanent), InvocationError (transient), CallbackError (callback failures)

  • Testing: Use DurableFunctionTestRunner class directly - instantiate with handler, use context manager, call run(input=...)

Invocation Requirements

Durable functions require qualified ARNs (version, alias, or $LATEST):

# Valid
aws lambda invoke --function-name my-function:1 output.json
aws lambda invoke --function-name my-function:prod output.json

# Invalid - will fail
aws lambda invoke --function-name my-function output.json

IAM Permissions

Your Lambda execution role MUST have the AWSLambdaBasicDurableExecutionRolePolicy managed policy attached. This includes:

  • lambda:CheckpointDurableExecution - Persist execution state

  • lambda:GetDurableExecutionState - Retrieve execution state

  • CloudWatch Logs permissions

Additional permissions needed for:

  • Durable invokes: lambda:InvokeFunction on target function ARNs

  • External callbacks: Systems need lambda:SendDurableExecutionCallbackSuccess and lambda:SendDurableExecutionCallbackFailure

Validation Guidelines

When writing or reviewing durable function code, ALWAYS check for these replay model violations:

  1. Non-deterministic code outside steps: Date.now(), Math.random(), UUID generation, API calls, database queries must all be inside steps

  2. Nested durable operations in step functions: Cannot call context.step(), context.wait(), or context.invoke() inside a step function — use context.runInChildContext() instead

  3. Closure mutations that won't persist: Variables mutated inside steps are NOT preserved across replays — return values from steps instead

  4. Side effects outside steps that repeat on replay: Use context.logger for logging (it is replay-aware and deduplicates automatically)

When implementing or modifying tests for durable functions, ALWAYS verify:

  1. All operations have descriptive names

  2. Tests get operations by NAME, never by index

  3. Replay behavior is tested with multiple invocations

  4. Use LocalDurableTestRunner for local testing

MCP Server Configuration

Write access is enabled by default. The plugin ships with --allow-write in .mcp.json, so the MCP server can create projects, generate IaC, and deploy on behalf of the user.

Access to sensitive data (like Lambda and API Gateway logs) is not enabled by default. To grant it, add --allow-sensitive-data-access to .mcp.json.

Resources

Files

references/deployment-iac.md

Deployment with Infrastructure as Code

Deploy durable functions using CloudFormation, CDK, or SAM.

IaC framework selection

Default: CDK

Override syntax:

  • "use CloudFormation" → Generate YAML templates

  • "use SAM" → Generate YAML templates

When not specified, ALWAYS use CDK

Error Scenario: Unsupported IaC Framework

  • List detected framework

  • State: "[framework] might not support Lambda durable functions yet"

  • Suggest supported frameworks as alternatives

Requirements

All durable functions require:

  1. DurableConfig property on the function

  2. AWSLambdaBasicDurableExecutionRolePolicy attached to execution role

  3. Qualified ARN (version or alias) for invocation

AWS CloudFormation

template.yaml:

AWSTemplateFormatVersion: '2010-09-09'
Resources:
  DurableFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: lambda.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicDurableExecutionRolePolicy

  DurableFunction:
    Type: AWS::Lambda::Function
    Properties:
      FunctionName: myDurableFunction
      Runtime: nodejs24.x  # or python3.14
      Handler: index.handler
      Role: !GetAtt DurableFunctionRole.Arn
      Code:
        ZipFile: |
          // Your durable function code
      DurableConfig:
        ExecutionTimeout: 3600        # Max execution time (seconds)
        RetentionPeriodInDays: 7      # How long to keep execution state
      Environment:
        Variables:
          LOG_LEVEL: INFO

  DurableFunctionVersion:
    Type: AWS::Lambda::Version
    Properties:
      FunctionName: !Ref DurableFunction

  DurableFunctionAlias:
    Type: AWS::Lambda::Alias
    Properties:
      FunctionName: !Ref DurableFunction
      FunctionVersion: !GetAtt DurableFunctionVersion.Version
      Name: prod

Outputs:
  FunctionArn:
    Value: !GetAtt DurableFunction.Arn
  AliasArn:
    Value: !Ref DurableFunctionAlias

Deploy:

aws cloudformation deploy \
  --template-file template.yaml \
  --stack-name my-durable-function \
  --capabilities CAPABILITY_IAM

AWS CDK

TypeScript:

import * as cdk from 'aws-cdk-lib';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as iam from 'aws-cdk-lib/aws-iam';

export class DurableFunctionStack extends cdk.Stack {
  constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const durableFunction = new lambda.Function(this, 'DurableFunction', {
      runtime: lambda.Runtime.NODEJS_24_X,  // or PYTHON_3_14
      handler: 'index.handler',
      code: lambda.Code.fromAsset('lambda'),
      durableConfig: {
        executionTimeout: cdk.Duration.hours(1),
        retentionPeriod: cdk.Duration.days(7)
      },
      environment: {
        LOG_LEVEL: 'INFO'
      }
    });

    // CDK automatically adds checkpoint permissions when durableConfig is set

    // Create version and alias
    const version = durableFunction.currentVersion;
    const alias = new lambda.Alias(this, 'ProdAlias', {
      aliasName: 'prod',
      version: version
    });

    // Output the qualified ARN
    new cdk.CfnOutput(this, 'FunctionAliasArn', {
      value: alias.functionArn
    });
  }
}

Deploy:

cdk deploy
CDK Custom Log Group Management

Best Practice: Explicitly create and manage CloudWatch Log Groups for better control over retention, cleanup, and costs.

import * as logs from 'aws-cdk-lib/aws-logs';
import * as iam from 'aws-cdk-lib/aws-iam';

// 1. Create explicit log group
const functionLogGroup = new logs.LogGroup(this, 'DurableFunctionLogGroup', {
  logGroupName: '/aws/lambda/myDurableFunction',
  retention: logs.RetentionDays.ONE_WEEK,
  removalPolicy: cdk.RemovalPolicy.DESTROY,  // Delete on stack destroy
});

// 2. Link to function
const durableFunction = new lambda.Function(this, 'DurableFunction', {
  runtime: lambda.Runtime.NODEJS_24_X,
  handler: 'index.handler',
  code: lambda.Code.fromAsset('lambda'),
  logGroup: functionLogGroup,  // Link to managed log group
  durableConfig: {
    executionTimeout: cdk.Duration.hours(1),
    retentionPeriod: cdk.Duration.days(7)
  }
});

// 3. Add durable execution policy (required with explicit log groups)
durableFunction.role?.addManagedPolicy(
  iam.ManagedPolicy.fromAwsManagedPolicyName(
    'service-role/AWSLambdaBasicDurableExecutionRolePolicy'
  )
);

Benefits:

  • Explicit Cleanup: removalPolicy: cdk.RemovalPolicy.DESTROY ensures log groups are deleted when stack is destroyed

  • Custom Retention: Set retention periods matching compliance/debugging needs

  • Predictable Naming: Control exact log group name

  • Cost Control: Avoid accumulating costs from orphaned log groups

When to use:

  • ✅ Production environments where log retention policies must be enforced

  • ✅ Development/test environments where automatic cleanup saves costs

  • ✅ Multi-function stacks where consistent log management is needed

Important: Don't forget to add AWSLambdaBasicDurableExecutionRolePolicy when using explicit log groups.

AWS SAM

template.yaml:

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Globals:
  Function:
    Timeout: 900
    MemorySize: 512

Resources:
  DurableFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: myDurableFunction
      Runtime: nodejs24.x  # or python3.14
      Handler: index.handler
      CodeUri: ./src
      DurableConfig:
        ExecutionTimeout: 3600
        RetentionPeriodInDays: 7
      Policies:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicDurableExecutionRolePolicy
      AutoPublishAlias: prod
      Environment:
        Variables:
          LOG_LEVEL: INFO

Outputs:
  FunctionArn:
    Value: !GetAtt DurableFunction.Arn
  AliasArn:
    Value: !Ref DurableFunction.Alias

Deploy:

sam build
sam deploy --guided

Durable Invokes

For functions that invoke other durable functions:

CloudFormation:

DurableFunctionRole:
  Type: AWS::IAM::Role
  Properties:
    AssumeRolePolicyDocument:
      Version: '2012-10-17'
      Statement:
        - Effect: Allow
          Principal:
            Service: lambda.amazonaws.com
          Action: sts:AssumeRole
    ManagedPolicyArns:
      - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicDurableExecutionRolePolicy
    Policies:
      - PolicyName: InvokeOtherFunctions
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action:
                - lambda:InvokeFunction
              Resource:
                - !GetAtt TargetFunction.Arn
                - !Sub '${TargetFunction.Arn}:*'  # For versions/aliases

CDK:

const targetFunction = new lambda.Function(this, 'TargetFunction', {
  // ... configuration
});

const orchestratorFunction = new lambda.Function(this, 'OrchestratorFunction', {
  // ... configuration with durableConfig
});

// Grant invoke permission
targetFunction.grantInvoke(orchestratorFunction);

External Callbacks

For external systems to send callbacks:

IAM Policy:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "lambda:SendDurableExecutionCallbackSuccess",
        "lambda:SendDurableExecutionCallbackFailure",
        "lambda:SendDurableExecutionCallbackHeartbeat"
      ],
      "Resource": "arn:aws:lambda:us-east-1:123456789012:function:myDurableFunction:*"
    }
  ]
}

Environment Configuration

Development:

DurableFunction:
  Type: AWS::Lambda::Function
  Properties:
    DurableConfig:
      ExecutionTimeout: 900          # 15 minutes
      RetentionPeriodInDays: 1       # Short retention
    Environment:
      Variables:
        LOG_LEVEL: DEBUG
        ENVIRONMENT: development

Production:

DurableFunction:
  Type: AWS::Lambda::Function
  Properties:
    DurableConfig:
      ExecutionTimeout: 86400        # 24 hours
      RetentionPeriodInDays: 30      # Long retention
    Environment:
      Variables:
        LOG_LEVEL: INFO
        ENVIRONMENT: production

Multi-Environment Deployment

CDK with Stages:

const app = new cdk.App();

new DurableFunctionStack(app, 'DurableFunction-Dev', {
  env: { account: '123456789012', region: 'us-east-1' },
  stage: 'dev',
  durableConfig: {
    executionTimeout: cdk.Duration.minutes(15),
    retentionPeriod: cdk.Duration.days(1)
  }
});

new DurableFunctionStack(app, 'DurableFunction-Prod', {
  env: { account: '123456789012', region: 'us-east-1' },
  stage: 'prod',
  durableConfig: {
    executionTimeout: cdk.Duration.hours(24),
    retentionPeriod: cdk.Duration.days(30)
  }
});

Invocation Examples

Critical Requirements

⚠️ Important Invocation Rules:

  1. Qualified Function Name Required: You MUST provide a qualified function name with version, alias, or :$LATEST

  2. Idempotency with durable-execution-name: Use this parameter to ensure the same execution name always refers to the same execution

  3. Binary Format: Use --cli-binary-format raw-in-base64-out to avoid base64 encoding issues

Synchronous Invocation (RequestResponse)

Synchronous invocation waits for the function to complete and returns the result immediately. Suitable for short workflows.

aws lambda invoke \
  --function-name 'myDurableFunction:$LATEST' \
  --invocation-type RequestResponse \
  --durable-execution-name "execution-123" \
  --payload '{"userId":"12345","action":"process"}' \
  --cli-binary-format raw-in-base64-out \
  --output json \
  response.json

# View the response
cat response.json

When to use RequestResponse:

  • Short-running workflows (under 15 minutes total)

  • When you need the result immediately

  • Interactive applications requiring synchronous responses

Asynchronous Invocation (Event)

Asynchronous invocation returns immediately with the execution ID. Ideal for long-running workflows.

aws lambda invoke \
  --function-name 'myDurableFunction:$LATEST' \
  --invocation-type Event \
  --durable-execution-name "background-task-456" \
  --payload '{"orderId":"ORD-789","amount":99.99}' \
  --cli-binary-format raw-in-base64-out \
  --output json \
  response.json

# Response contains execution ID, not the result
cat response.json

When to use Event:

  • Long-running workflows (hours, days, or longer)

  • Background processing tasks

  • Workflows with wait operations or human-in-the-loop steps

Idempotency with durable-execution-name

The --durable-execution-name parameter ensures that the same execution is never created twice:

# First invocation - creates new execution
aws lambda invoke \
  --function-name 'myDurableFunction:$LATEST' \
  --invocation-type RequestResponse \
  --durable-execution-name "order-processing-ORD-123" \
  --payload '{"orderId":"ORD-123"}' \
  --cli-binary-format raw-in-base64-out \
  response.json

# Second invocation with same execution name - returns existing execution result
aws lambda invoke \
  --function-name 'myDurableFunction:$LATEST' \
  --invocation-type RequestResponse \
  --durable-execution-name "order-processing-ORD-123" \
  --payload '{"orderId":"ORD-123"}' \
  --cli-binary-format raw-in-base64-out \
  response.json
Using Specific Function Versions

Durable functions require qualified ARNs (version, alias, or $LATEST):

# ✅ Invoke specific version
aws lambda invoke \
  --function-name 'myDurableFunction:1' \
  --invocation-type RequestResponse \
  --durable-execution-name "versioned-exec-1" \
  --payload '{"test":"data"}' \
  --cli-binary-format raw-in-base64-out \
  response.json

# ✅ Invoke using alias
aws lambda invoke \
  --function-name 'myDurableFunction:production' \
  --invocation-type RequestResponse \
  --durable-execution-name "prod-exec-1" \
  --payload '{"test":"data"}' \
  --cli-binary-format raw-in-base64-out \
  response.json

# ❌ Unqualified - will fail!
aws lambda invoke \
  --function-name 'myDurableFunction' \
  --payload '{"test":"data"}' \
  response.json
# Error: Durable execution requires qualified function identifier

Monitoring and Observability

CloudWatch Logs:

DurableFunction:
  Type: AWS::Lambda::Function
  Properties:
    # ... other properties
    LoggingConfig:
      LogFormat: JSON
      LogGroup: !Ref DurableFunctionLogGroup

DurableFunctionLogGroup:
  Type: AWS::Logs::LogGroup
  Properties:
    LogGroupName: /aws/lambda/myDurableFunction
    RetentionInDays: 7

CloudWatch Alarms:

DurableFunctionErrorAlarm:
  Type: AWS::CloudWatch::Alarm
  Properties:
    AlarmName: DurableFunction-Errors
    MetricName: Errors
    Namespace: AWS/Lambda
    Statistic: Sum
    Period: 300
    EvaluationPeriods: 1
    Threshold: 5
    ComparisonOperator: GreaterThanThreshold
    Dimensions:
      - Name: FunctionName
        Value: !Ref DurableFunction

Best Practices

  1. Always use qualified ARNs (versions or aliases) for invocation

  2. Set appropriate execution timeouts based on workflow duration

  3. Configure retention periods to balance cost and debugging needs

  4. Use aliases for production deployments

  5. Grant minimal IAM permissions - only what's needed

  6. Enable structured logging (JSON format)

  7. Set up CloudWatch alarms for errors and throttles

  8. Use environment variables for configuration

  9. Deploy to multiple environments (dev, staging, prod)

  10. Version your infrastructure code alongside function code

Common issues

Function Not Durable

Issue: Function executes but doesn't checkpoint.

Solution: Verify DurableConfig is set and role has checkpoint permissions.

Invocation Fails with "Unqualified ARN"

Issue: InvalidParameterValueException: Durable execution requires qualified function identifier

Solution: Use version, alias, or $LATEST:

# ✅ Correct
aws lambda invoke --function-name myFunction:prod ...
aws lambda invoke --function-name myFunction:1 ...

# ❌ Wrong
aws lambda invoke --function-name myFunction ...
Checkpoint Permission Denied

Issue: AccessDeniedException: User is not authorized to perform: lambda:CheckpointDurableExecution

Solution: Add AWSLambdaBasicDurableExecutionRolePolicy to execution role.

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.

Needs: Needs an MCP server, Needs a command-line tool, Needs Python, Needs Node.js

Security

What our scanner noticed· Low risk

  • Instructions that use the network

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 Labs
Publisher
AWS Labs (Official)
Source
awslabs/agent-plugins · plugins/aws-serverless/skills/aws-lambda-durable-functions · commit fbefb37
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

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