a2a-sdk-patterns

Agent-to-Agent Protocol SDK Patterns

Safety Notice

This listing is imported from skills.sh public index metadata. Review upstream SKILL.md and repository scripts before running.

Copy this and send it to your AI assistant to learn

Install skill "a2a-sdk-patterns" with this command: npx skills add vanman2024/ai-dev-marketplace/vanman2024-ai-dev-marketplace-a2a-sdk-patterns

Agent-to-Agent Protocol SDK Patterns

Purpose: Provide installation, configuration, and usage patterns for A2A Protocol SDKs across multiple programming languages.

Activation Triggers:

  • SDK installation requests

  • Language-specific A2A setup

  • Authentication configuration

  • Package dependency issues

  • SDK version compatibility

  • Import/setup errors

Supported Languages:

  • Python (3.8+)

  • TypeScript/JavaScript (Node 18+)

  • Java (11+)

  • C# (.NET 6+)

  • Go (1.20+)

Quick Start by Language

Python

Install SDK

./scripts/install-python.sh

Verify installation

./scripts/validate-python.sh

TypeScript

Install SDK

./scripts/install-typescript.sh

Verify installation

./scripts/validate-typescript.sh

Java

Install SDK

./scripts/install-java.sh

Verify installation

./scripts/validate-java.sh

C#

Install SDK

./scripts/install-csharp.sh

Verify installation

./scripts/validate-csharp.sh

Go

Install SDK

./scripts/install-go.sh

Verify installation

./scripts/validate-go.sh

Installation Scripts

All installation scripts are in scripts/ directory:

  • install-python.sh

  • Install Python SDK via pip

  • install-typescript.sh

  • Install TypeScript SDK via npm/yarn

  • install-java.sh

  • Install Java SDK via Maven/Gradle

  • install-csharp.sh

  • Install C# SDK via NuGet

  • install-go.sh

  • Install Go SDK via go get

Validation scripts verify installation and dependencies:

  • validate-python.sh

  • Check Python SDK installation

  • validate-typescript.sh

  • Check TypeScript SDK installation

  • validate-java.sh

  • Check Java SDK installation

  • validate-csharp.sh

  • Check C# SDK installation

  • validate-go.sh

  • Check Go SDK installation

Configuration Templates

Templates are in templates/ directory:

Environment Setup:

  • env-template.txt

  • Environment variable template (all languages)

  • python-config.py

  • Python configuration example

  • typescript-config.ts

  • TypeScript configuration example

  • java-config.xml

  • Java Maven configuration

  • csharp-config.csproj

  • C# project configuration

  • go-mod.txt

  • Go module configuration

Authentication:

  • auth-api-key-template.txt

  • API key authentication

  • auth-oauth-template.txt

  • OAuth authentication

  • auth-jwt-template.txt

  • JWT authentication

Common Setup Patterns

Environment Variables

All SDKs use environment variables for configuration:

Required

A2A_API_KEY=your_api_key_here A2A_BASE_URL=https://api.a2a.example.com

Optional

A2A_TIMEOUT=30 A2A_RETRY_ATTEMPTS=3 A2A_LOG_LEVEL=info

CRITICAL: Always use placeholders in committed files. Create .env.example with placeholder values only.

Authentication Setup

All SDKs support three authentication methods:

  • API Key - Simplest, for server-to-server

  • OAuth 2.0 - For user-delegated access

  • JWT - For service-to-service with custom claims

See templates/auth-*-template.txt for implementation patterns.

Error Handling

All SDKs provide consistent error handling:

  • A2AConnectionError

  • Network/connectivity issues

  • A2AAuthenticationError

  • Invalid credentials

  • A2ARateLimitError

  • Rate limit exceeded

  • A2AValidationError

  • Invalid request data

See examples/error-handling-*.md for language-specific patterns.

Language-Specific Considerations

Python

  • Requires Python 3.8+

  • Install via pip: pip install a2a-protocol

  • Async support via asyncio

  • Type hints available

  • See examples/python-basic.py

TypeScript

  • Requires Node 18+

  • Install via npm: npm install @a2a/protocol

  • Full TypeScript definitions included

  • Promise-based async/await

  • See examples/typescript-basic.ts

Java

  • Requires Java 11+

  • Maven: Add to pom.xml

  • Gradle: Add to build.gradle

  • Thread-safe client

  • See examples/java-basic.java

C#

  • Requires .NET 6+

  • NuGet: dotnet add package A2A.Protocol

  • Async/await support

  • Dependency injection ready

  • See examples/csharp-basic.cs

Go

  • Requires Go 1.20+

  • Install: go get github.com/a2a/protocol-go

  • Context-aware operations

  • Goroutine-safe

  • See examples/go-basic.go

Troubleshooting

Installation Issues

Package not found:

Python

pip install --upgrade pip pip install a2a-protocol

TypeScript

npm cache clean --force npm install @a2a/protocol

Java

mvn clean install -U

C#

dotnet restore --force

Go

go clean -modcache go get -u github.com/a2a/protocol-go

Version conflicts: Run the appropriate validation script to check dependencies:

./scripts/validate-<language>.sh

Authentication Errors

  • Check environment variables are set

  • Verify API key format (no extra spaces/newlines)

  • Ensure base URL is correct

  • Check API key permissions

Connection Issues

  • Verify network connectivity

  • Check firewall/proxy settings

  • Validate base URL is accessible

  • Review timeout settings

Security Best Practices

Environment Variables:

  • NEVER commit actual API keys

  • Use .env files (add to .gitignore )

  • Create .env.example with placeholders

  • Use secret management in production (Vault, AWS Secrets Manager, etc.)

API Keys:

  • Rotate keys regularly

  • Use different keys for dev/staging/prod

  • Implement key expiration

  • Monitor key usage

Network Security:

  • Always use HTTPS

  • Validate SSL certificates

  • Implement request signing for sensitive operations

  • Use VPN/private networks for production

Examples

Complete examples for each language:

  • examples/python-basic.py

  • Basic Python usage

  • examples/python-async.py

  • Async Python usage

  • examples/typescript-basic.ts

  • Basic TypeScript usage

  • examples/java-basic.java

  • Basic Java usage

  • examples/csharp-basic.cs

  • Basic C# usage

  • examples/go-basic.go

  • Basic Go usage

  • examples/error-handling-python.md

  • Python error handling

  • examples/error-handling-typescript.md

  • TypeScript error handling

  • examples/error-handling-java.md

  • Java error handling

Resources

Official Documentation:

GitHub Repositories:

Version: 1.0.0 Protocol Compatibility: A2A Protocol 1.0+

Source Transparency

This detail page is rendered from real SKILL.md content. Trust labels are metadata-based hints, not a safety guarantee.

Open in GitHubOpen in ClawHub

Related Skills

Related by shared tags or category signals.

Coding

document-parsers

No summary provided by upstream source.

Repository SourceNeeds Review
19-vanman2024
Coding

stt-integration

No summary provided by upstream source.

Repository SourceNeeds Review
11-vanman2024
Coding

model-routing-patterns

No summary provided by upstream source.

Repository SourceNeeds Review
10-vanman2024
Coding

react-email-templates

No summary provided by upstream source.

Repository SourceNeeds Review
9-vanman2024