# a2a-python **Repository Path**: mirrors_google/a2a-python ## Basic Information - **Project Name**: a2a-python - **Description**: Official Python SDK for the Agent2Agent (A2A) Protocol - **Primary Language**: Unknown - **License**: Apache-2.0 - **Default Branch**: main - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2025-05-16 - **Last Updated**: 2026-09-26 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # A2A Python SDK [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](LICENSE) [![PyPI version](https://img.shields.io/pypi/v/a2a-sdk)](https://pypi.org/project/a2a-sdk/) ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/a2a-sdk) [![PyPI - Downloads](https://img.shields.io/pypi/dw/a2a-sdk)](https://pypistats.org/packages/a2a-sdk) [![Python Unit Tests](https://github.com/a2aproject/a2a-python/actions/workflows/unit-tests.yml/badge.svg)](https://github.com/a2aproject/a2a-python/actions/workflows/unit-tests.yml) Ask Code Wiki
Agent2Agent Protocol Logo

A Python library for running agentic applications as A2A Servers, following the Agent2Agent (A2A) Protocol.

--- > [!IMPORTANT] > **Upgrading the SDK from `0.3` to `1.0`?** See the [**v0.3 → v1.0 migration guide**](docs/migrations/v1_0/README.md). For supported A2A spec versions, see [Compatibility](#-compatibility). ## ✨ Features - **A2A Protocol Compliant:** Build agentic applications that adhere to the Agent2Agent (A2A) Protocol. - **Extensible:** Easily add support for different communication protocols and database backends. - **Asynchronous:** Built on modern async Python for high performance. - **Optional Integrations:** Includes optional support for: - HTTP servers ([FastAPI](https://fastapi.tiangolo.com/), [Starlette](https://www.starlette.io/)) - [gRPC](https://grpc.io/) - [OpenTelemetry](https://opentelemetry.io/) for tracing - SQL databases ([PostgreSQL](https://www.postgresql.org/), [MySQL](https://www.mysql.com/), [SQLite](https://sqlite.org/)) --- ## 🧩 Compatibility This SDK implements the A2A Protocol Specification [`1.0`](https://a2a-protocol.org/v1.0.0/specification/), with compatibility mode for [`0.3`](https://a2a-protocol.org/v0.3.0/specification). See [#742](https://github.com/a2aproject/a2a-python/issues/742) for details on the compatibility scope. | Spec Version | Transport | Client | Server | | :--- | :--- | :---: | :---: | | **`1.0`** | JSON-RPC | ✅ | ✅ | | **`1.0`** | HTTP+JSON/REST | ✅ | ✅ | | **`1.0`** | gRPC | ✅ | ✅ | | **`0.3`** (compat) | JSON-RPC | ✅ | ✅ | | **`0.3`** (compat) | HTTP+JSON/REST | ✅ | ✅ | | **`0.3`** (compat) | gRPC | ✅ | ✅ | --- ## 🚀 Getting Started ### Prerequisites - Python 3.10+ - `uv` (recommended) or `pip` ### 🔧 Installation Install the core SDK and any desired extras using your preferred package manager. | Feature | `uv` Command | `pip` Command | | ------------------------ | ------------------------------------------ | -------------------------------------------- | | **Core SDK** | `uv add a2a-sdk` | `pip install a2a-sdk` | | **All Extras** | `uv add "a2a-sdk[all]"` | `pip install "a2a-sdk[all]"` | | **HTTP Server** | `uv add "a2a-sdk[http-server]"` | `pip install "a2a-sdk[http-server]"` | | **FastAPI Integration** | `uv add "a2a-sdk[fastapi]"` | `pip install "a2a-sdk[fastapi]"` | | **gRPC Support** | `uv add "a2a-sdk[grpc]"` | `pip install "a2a-sdk[grpc]"` | | **OpenTelemetry Tracing**| `uv add "a2a-sdk[telemetry]"` | `pip install "a2a-sdk[telemetry]"` | | **Encryption** | `uv add "a2a-sdk[encryption]"` | `pip install "a2a-sdk[encryption]"` | | | | | | **Database Drivers** | | | | **PostgreSQL** | `uv add "a2a-sdk[postgresql]"` | `pip install "a2a-sdk[postgresql]"` | | **MySQL** | `uv add "a2a-sdk[mysql]"` | `pip install "a2a-sdk[mysql]"` | | **SQLite** | `uv add "a2a-sdk[sqlite]"` | `pip install "a2a-sdk[sqlite]"` | | **All SQL Drivers** | `uv add "a2a-sdk[sql]"` | `pip install "a2a-sdk[sql]"` | ## Examples ### [Helloworld Example](https://github.com/a2aproject/a2a-samples/tree/main/samples/python/agents/helloworld) 1. Run Remote Agent ```bash git clone https://github.com/a2aproject/a2a-samples.git cd a2a-samples/samples/python/agents/helloworld uv run . ``` 2. In another terminal, run the client ```bash cd a2a-samples/samples/python/agents/helloworld uv run test_client.py ``` 3. You can validate your agent using the agent inspector. Follow the instructions at the [a2a-inspector](https://github.com/a2aproject/a2a-inspector) repo. --- ## 🌐 More Examples You can find a variety of more detailed examples in the [a2a-samples](https://github.com/a2aproject/a2a-samples) repository: - **[Python Examples](https://github.com/a2aproject/a2a-samples/tree/main/samples/python)** - **[JavaScript Examples](https://github.com/a2aproject/a2a-samples/tree/main/samples/js)** --- ## 🤝 Contributing Contributions are welcome! Please see the [CONTRIBUTING.md](CONTRIBUTING.md) file for guidelines on how to get involved. --- ## 📄 License This project is licensed under the Apache 2.0 License. See the [LICENSE](LICENSE) file for more details.