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a2a-sdk

A2A Python SDK

2a2aagentprotocolpypisdk

Description

# 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) <!-- markdownlint-disable no-inline-html --> <a href="https://codewiki.google/github.com/a2aproject/a2a-python"> <img src="https://www.gstatic.com/_/boq-sdlc-agents-ui/_/r/Mvosg4klCA4.svg" alt="Ask Code Wiki" height="20"> </a> <div align="center"> <img src="https://raw.githubusercontent.com/a2aproject/A2A/refs/heads/main/docs/assets/a2a-logo-black.svg" width="256" alt="A2A Logo"/> <h3> A Python library for running agentic applications as A2A Servers, following the <a href="https://a2a-protocol.org">Agent2Agent (A2A) Protocol</a>. </h3> </div> <!-- markdownlint-enable no-inline-html --> --- > [!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]"` | | **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 valida

Release History

VersionChangesUrgencyDate
1.0.0Imported from PyPI (1.0.0)Low4/21/2026
v1.0.0## [1.0.0](https://github.com/a2aproject/a2a-python/compare/v1.0.0-alpha.3...v1.0.0) (2026-04-20) See the [**v0.3 → v1.0 migration guide**](docs/migrations/v1_0/README.md) and changelog entries for alpha versions below. ### ⚠ BREAKING CHANGES * remove Vertex AI Task Store integration ([#999](https://github.com/a2aproject/a2a-python/issues/999)) ### Bug Fixes * rely on agent executor implementation for stream termination ([#988](https://github.com/a2aproject/a2a-python/issues/988)) ([d77cd68High4/20/2026
v1.0.0-alpha.3## [1.0.0-alpha.3](https://github.com/a2aproject/a2a-python/compare/v1.0.0-alpha.2...v1.0.0-alpha.3) (2026-04-17) ### Bug Fixes * update `with_a2a_extensions` to append instead of overwriting ([#985](https://github.com/a2aproject/a2a-python/issues/985)) ([e1d0e7a](https://github.com/a2aproject/a2a-python/commit/e1d0e7a72e2b9633be0b76c952f6c2e6fe11e3e5))High4/17/2026
v1.0.0-alpha.2## [1.0.0-alpha.2](https://github.com/a2aproject/a2a-python/compare/v1.0.0-alpha.1...v1.0.0-alpha.2) (2026-04-17) ### ⚠ BREAKING CHANGES * clean helpers and utils folders structure ([#983](https://github.com/a2aproject/a2a-python/issues/983)) * Raise errors on invalid AgentExecutor behavior. ([#979](https://github.com/a2aproject/a2a-python/issues/979)) * extract developer helpers in helpers folder ([#978](https://github.com/a2aproject/a2a-python/issues/978)) ### Features * Raise errors on iHigh4/17/2026
v1.0.0-alpha.1## [1.0.0-alpha.1](https://github.com/a2aproject/a2a-python/compare/v1.0.0-alpha.0...v1.0.0-alpha.1) (2026-04-10) ### ⚠ BREAKING CHANGES * **client:** make ClientConfig.push_notification_config singular ([#955](https://github.com/a2aproject/a2a-python/issues/955)) * **client:** reorganize ClientFactory API ([#947](https://github.com/a2aproject/a2a-python/issues/947)) * **server:** add build_user function to DefaultContextBuilder to allow A2A user creation customization ([#925](https://github.Medium4/10/2026
v0.3.26## [0.3.26](https://github.com/a2aproject/a2a-python/compare/v0.3.25...v0.3.26) (2026-04-09) ### Features * Add support for more Task Message and Artifact fields in the Vertex Task Store ([#908](https://github.com/a2aproject/a2a-python/issues/908)) ([5e0dcd7](https://github.com/a2aproject/a2a-python/commit/5e0dcd798fcba16a8092b0b4c2d3d8026ca287de)) ### Bug Fixes * remove the use of deprecated types from VertexTaskStore ([#889](https://github.com/a2aproject/a2a-python/issues/889)) ([6d49122Medium4/9/2026
v1.0.0-alpha.0## 1.0.0-alpha.0 (2026-03-17) ### ⚠ BREAKING CHANGES * **spec**: upgrade SDK to A2A 1.0 spec and use proto-based types ([#572](https://github.com/a2aproject/a2a-python/issues/572), [#665](https://github.com/a2aproject/a2a-python/issues/665), [#804](https://github.com/a2aproject/a2a-python/issues/804), [#765](https://github.com/a2aproject/a2a-python/issues/765)) * **client:** introduce ServiceParameters for extensions and include it in ClientCallContext ([#784](https://github.com/a2aprojLow3/17/2026
v0.3.25## [0.3.25](https://github.com/a2aproject/a2a-python/compare/v0.3.24...v0.3.25) (2026-03-10) ### Features * Implement a vertex based task store ([#752](https://github.com/a2aproject/a2a-python/issues/752)) ([fa14dbf](https://github.com/a2aproject/a2a-python/commit/fa14dbf46b603f288a1f1c474401483bf53950e4)) ### Bug Fixes * return background task from consume_and_break_on_interrupt to prevent GC ([#775](https://github.com/a2aproject/a2a-python/issues/775)) ([a236d4d](https://github.com/a2aprLow3/10/2026
v0.3.24## [0.3.24](https://github.com/a2aproject/a2a-python/compare/v0.3.23...v0.3.24) (2026-02-20) ### Bug Fixes * **core:** preserve legitimate falsy values in _clean_empty ([#713](https://github.com/a2aproject/a2a-python/issues/713)) ([7632f55](https://github.com/a2aproject/a2a-python/commit/7632f55572641d8fbc353ee08ef2b1f6b75c38b6)) * **deps:** `DeprecationWarning` on `HTTP_413_REQUEST_ENTITY_TOO_LARGE` ([#693](https://github.com/a2aproject/a2a-python/issues/693)) ([9968f9c](https://github.com/aLow2/20/2026
v0.3.23## [0.3.23](https://github.com/a2aproject/a2a-python/compare/v0.3.22...v0.3.23) (2026-02-13) ### Features * add async context manager support to BaseClient ([#688](https://github.com/a2aproject/a2a-python/issues/688)) ([ae9dc88](https://github.com/a2aproject/a2a-python/commit/ae9dc8897885ad26461083682dd7ba008d5af3cb)) * add async context manager support to ClientTransport ([#682](https://github.com/a2aproject/a2a-python/issues/682)) ([2e45c0d](https://github.com/a2aproject/a2a-python/commit/2Low2/17/2026
v0.3.22## [0.3.22](https://github.com/a2aproject/a2a-python/compare/v0.3.21...v0.3.22) (2025-12-16) ### Features * Add custom ID generators to `SimpleRequestContextBuilder` ([#594](https://github.com/a2aproject/a2a-python/issues/594)) ([04bcafc](https://github.com/a2aproject/a2a-python/commit/04bcafc737cf426d9975c76e346335ff992363e2)) ### Code Refactoring * Move agent card signature verification into `A2ACardResolver` ([6fa6a6c](https://github.com/a2aproject/a2a-python/commit/6fa6a6cf3875bdf7bfc5Low12/16/2025
v0.3.21## [0.3.21](https://github.com/a2aproject/a2a-python/compare/v0.3.20...v0.3.21) (2025-12-12) ### Documentation * Fixing typos ([#586](https://github.com/a2aproject/a2a-python/issues/586)) ([5fea21f](https://github.com/a2aproject/a2a-python/commit/5fea21fb34ecea55e588eb10139b5d47020a76cb))Low12/12/2025
v0.3.20## [0.3.20](https://github.com/a2aproject/a2a-python/compare/v0.3.19...v0.3.20) (2025-12-03) ### Bug Fixes * Improve streaming errors handling ([#576](https://github.com/a2aproject/a2a-python/issues/576)) ([7ea7475](https://github.com/a2aproject/a2a-python/commit/7ea7475091df2ee40d3035ef1bc34ee2f86524ee))Low12/3/2025
v0.3.19## [0.3.19](https://github.com/a2aproject/a2a-python/compare/v0.3.18...v0.3.19) (2025-11-25) ### Bug Fixes * **jsonrpc, rest:** `extensions` support in `get_card` methods in `json-rpc` and `rest` transports ([#564](https://github.com/a2aproject/a2a-python/issues/564)) ([847f18e](https://github.com/a2aproject/a2a-python/commit/847f18eff59985f447c39a8e5efde87818b68d15))Low11/25/2025
v0.3.18## [0.3.18](https://github.com/a2aproject/a2a-python/compare/v0.3.17...v0.3.18) (2025-11-24) ### Bug Fixes * return updated `agent_card` in `JsonRpcTransport.get_card()` ([#552](https://github.com/a2aproject/a2a-python/issues/552)) ([0ce239e](https://github.com/a2aproject/a2a-python/commit/0ce239e98f67ccbf154f2edcdbcee43f3b080ead))Low11/25/2025
v0.3.17## [0.3.17](https://github.com/a2aproject/a2a-python/compare/v0.3.16...v0.3.17) (2025-11-24) ### Features * **client:** allow specifying `history_length` via call-site `MessageSendConfiguration` in `BaseClient.send_message` ([53bbf7a](https://github.com/a2aproject/a2a-python/commit/53bbf7ae3ad58fb0c10b14da05cf07c0a7bd9651))Low11/24/2025
v0.3.16## [0.3.16](https://github.com/a2aproject/a2a-python/compare/v0.3.15...v0.3.16) (2025-11-21) ### Bug Fixes * Ensure metadata propagation for `Task` `ToProto` and `FromProto` conversion ([#557](https://github.com/a2aproject/a2a-python/issues/557)) ([fc31d03](https://github.com/a2aproject/a2a-python/commit/fc31d03e8c6acb68660f6d1924262e16933c5d50))Low11/21/2025
v0.3.15## [0.3.15](https://github.com/a2aproject/a2a-python/compare/v0.3.14...v0.3.15) (2025-11-19) ### Features * Add client-side extension support ([https://github.com/a2aproject/a2a-python/pull/525](https://github.com/a2aproject/a2a-python/pull/525)) ([https://github.com/a2aproject/a2a-python/commit/9a92bd238e7560b195165ac5f78742981760525e](https://github.com/a2aproject/a2a-python/commit/9a92bd238e7560b195165ac5f78742981760525e)) * **rest, jsonrpc:** Add client-side extension support ([https://giLow11/19/2025
v0.3.14## [0.3.14](https://github.com/a2aproject/a2a-python/compare/v0.3.13...v0.3.14) (2025-11-17) ### Features * **jsonrpc:** add option to disable oversized payload check in JSONRPC applications ([ba142df](https://github.com/a2aproject/a2a-python/commit/ba142df821d1c06be0b96e576fd43015120fcb0b))Low11/18/2025
v0.3.13## [0.3.13](https://github.com/a2aproject/a2a-python/compare/v0.3.12...v0.3.13) (2025-11-13) ### Bug Fixes * return entire history when history_length=0 ([#537](https://github.com/a2aproject/a2a-python/issues/537)) ([acdc0de](https://github.com/a2aproject/a2a-python/commit/acdc0de4fa03d34a6b287ab252ff51b19c3016b5))Low11/17/2025
v0.3.12## [0.3.12](https://github.com/a2aproject/a2a-python/compare/v0.3.11...v0.3.12) (2025-11-12) ### Bug Fixes * **grpc:** Add `extensions` to `Artifact` converters. ([#523](https://github.com/a2aproject/a2a-python/issues/523)) ([c03129b](https://github.com/a2aproject/a2a-python/commit/c03129b99a663ae1f1ae72f20e4ead7807ede941))Low11/12/2025
v0.3.11## [0.3.11](https://github.com/a2aproject/a2a-python/compare/v0.3.10...v0.3.11) (2025-11-07) ### Bug Fixes * add metadata to send message request ([12b4a1d](https://github.com/a2aproject/a2a-python/commit/12b4a1d565a53794f5b55c8bd1728221c906ed41))Low11/7/2025
v0.3.10## [0.3.10](https://github.com/a2aproject/a2a-python/compare/v0.3.9...v0.3.10) (2025-10-21) ### Features * add `get_artifact_text()` helper method ([9155888](https://github.com/a2aproject/a2a-python/commit/9155888d258ca4d047002997e6674f3f15a67232)) * Add a `ClientFactory.connect()` method for easy client creation ([d585635](https://github.com/a2aproject/a2a-python/commit/d5856359034f4d3d1e4578804727f47a3cd7c322)) ### Bug Fixes * change `MAX_CONTENT_LENGTH` (for file attachment) in json-rpcLow10/21/2025
v0.3.9## [0.3.9](https://github.com/a2aproject/a2a-python/compare/v0.3.8...v0.3.9) (2025-10-15) ### Features * custom ID generators ([051ab20](https://github.com/a2aproject/a2a-python/commit/051ab20c395daa2807b0233cf1c53493e41b60c2)) ### Bug Fixes * apply `history_length` for `message/send` requests ([#498](https://github.com/a2aproject/a2a-python/issues/498)) ([a49f94e](https://github.com/a2aproject/a2a-python/commit/a49f94ef23d81b8375e409b1c1e51afaf1da1956)) * **client:** `A2ACardResolver.get_Low10/15/2025
v0.3.8## [0.3.8](https://github.com/a2aproject/a2a-python/compare/v0.3.7...v0.3.8) (2025-10-06) ### Bug Fixes * Add `__str__` and `__repr__` methods to `ServerError` ([#489](https://github.com/a2aproject/a2a-python/issues/489)) ([2c152c0](https://github.com/a2aproject/a2a-python/commit/2c152c0e636db828839dc3133756c558ab090c1a)) * **grpc:** Fix missing extensions from protobuf ([#476](https://github.com/a2aproject/a2a-python/issues/476)) ([8dbc78a](https://github.com/a2aproject/a2a-python/commit/8dbLow10/6/2025
v0.3.7## [0.3.7](https://github.com/a2aproject/a2a-python/compare/v0.3.6...v0.3.7) (2025-09-22) ### Bug Fixes * jsonrpc client send streaming request header and timeout field ([#475](https://github.com/a2aproject/a2a-python/issues/475)) ([675354a](https://github.com/a2aproject/a2a-python/commit/675354a4149f15eb3ba4ad277ded00ad501766dd)) * Task state is not persisted to task store after client disconnect ([#472](https://github.com/a2aproject/a2a-python/issues/472)) ([5342ca4](https://github.com/a2apLow9/23/2025
v0.3.6## [0.3.6](https://github.com/a2aproject/a2a-python/compare/v0.3.5...v0.3.6) (2025-09-09) ### Features * add JSON-RPC `method` to `ServerCallContext.state` ([d62df7a](https://github.com/a2aproject/a2a-python/commit/d62df7a77e556f26556fc798a55dc6dacec21ea4)) * **gRPC:** Add proto conversion utilities ([80fc33a](https://github.com/a2aproject/a2a-python/commit/80fc33aaef647826208d9020ef70e5e6592468e3)) ### Miscellaneous Chores * release 0.3.6 ([acc9d3b](https://github.com/a2aproject/a2a-pythoLow9/17/2025
v0.3.5## [0.3.5](https://github.com/a2aproject/a2a-python/compare/v0.3.4...v0.3.5) (2025-09-08) ### Bug Fixes * Prevent client disconnect from stopping task execution ([#440](https://github.com/a2aproject/a2a-python/issues/440)) ([58b4c81](https://github.com/a2aproject/a2a-python/commit/58b4c81746fc83e65f23f46308c47099697554ea)), closes [#296](https://github.com/a2aproject/a2a-python/issues/296) * **proto:** Adds metadata field to A2A DataPart proto ([#455](https://github.com/a2aproject/a2a-python/Low9/8/2025
v0.3.4## [0.3.4](https://github.com/a2aproject/a2a-python/compare/v0.3.3...v0.3.4) (2025-09-02) ### Features * Add `ServerCallContext` into task store operations ([#443](https://github.com/a2aproject/a2a-python/issues/443)) ([e3e5c4b](https://github.com/a2aproject/a2a-python/commit/e3e5c4b7dcb5106e943b9aeb8e761ed23cc166a2)) * Add extensions support to `TaskUpdater.add_artifact` ([#436](https://github.com/a2aproject/a2a-python/issues/436)) ([598d8a1](https://github.com/a2aproject/a2a-python/commit/5Low9/2/2025
v0.3.3## [0.3.3](https://github.com/a2aproject/a2a-python/compare/v0.3.2...v0.3.3) (2025-08-22) ### Features * Update proto conversion utilities ([#424](https://github.com/a2aproject/a2a-python/issues/424)) ([a3e7e1e](https://github.com/a2aproject/a2a-python/commit/a3e7e1ef2684f979a3b8cbde1f9fd24ce9154e40)) ### Bug Fixes * fixing JSONRPC error mapping ([#414](https://github.com/a2aproject/a2a-python/issues/414)) ([d2e869f](https://github.com/a2aproject/a2a-python/commit/d2e869f567a84f59967cf59a0Low8/25/2025
v0.3.2## [0.3.2](https://github.com/a2aproject/a2a-python/compare/v0.3.1...v0.3.2) (2025-08-20) ### Bug Fixes * Add missing mime_type and name in proto conversion utils ([#408](https://github.com/a2aproject/a2a-python/issues/408)) ([72b2ee7](https://github.com/a2aproject/a2a-python/commit/72b2ee75dccfc8399edaa0837a025455b4b53a17)) * Add name field to FilePart protobuf message ([#403](https://github.com/a2aproject/a2a-python/issues/403)) ([1dbe33d](https://github.com/a2aproject/a2a-python/commit/1dbLow8/20/2025
v0.3.1## [0.3.1](https://github.com/a2aproject/a2a-python/compare/v0.3.0...v0.3.1) (2025-08-13) ### Features * Add agent card as a route in rest adapter ([ba93053](https://github.com/a2aproject/a2a-python/commit/ba93053850a767a8959bc634883008fcc1366e09)) ### Bug Fixes * gracefully handle task exceptions in event consumer ([#383](https://github.com/a2aproject/a2a-python/issues/383)) ([2508a9b](https://github.com/a2aproject/a2a-python/commit/2508a9b8ec1a1bfdc61e9012b7d68b33082b3981)) * openapi worLow8/13/2025
v0.3.0## [0.3.0](https://github.com/a2aproject/a2a-python/compare/v0.2.16...v0.3.0) (2025-07-31) ### ⚠ BREAKING CHANGES * **deps:** Make opentelemetry an optional dependency ([#369](https://github.com/a2aproject/a2a-python/issues/369)) * **spec:** Update Agent Card Well-Known Path to `/.well-known/agent-card.json` ([#320](https://github.com/a2aproject/a2a-python/issues/320)) * Remove custom `__getattr__` and `__setattr__` for `camelCase` fields in `types.py` ([#335](https://github.com/a2aproLow7/31/2025
v0.2.16## [0.2.16](https://github.com/a2aproject/a2a-python/compare/v0.2.15...v0.2.16) (2025-07-21) ### Features * Convert fields in `types.py` to use `snake_case` ([#199](https://github.com/a2aproject/a2a-python/issues/199)) ([0bb5563](https://github.com/a2aproject/a2a-python/commit/0bb55633272605a0404fc14c448a9dcaca7bb693)) ### Bug Fixes * Add deprecation warning for camelCase alias ([#334](https://github.com/a2aproject/a2a-python/issues/334)) ([f22b384](https://github.com/a2aproject/a2a-pythonLow7/21/2025
v0.2.15## [0.2.15](https://github.com/a2aproject/a2a-python/compare/v0.2.14...v0.2.15) (2025-07-21) ### Bug Fixes * Add Input Validation for Empty Message Content ([#327](https://github.com/a2aproject/a2a-python/issues/327)) ([5061834](https://github.com/a2aproject/a2a-python/commit/5061834e112a4eb523ac505f9176fc42d86d8178)) * Prevent import grpc issues for Client after making dependencies optional ([#330](https://github.com/a2aproject/a2a-python/issues/330)) ([53ad485](https://github.com/a2aprojectLow7/21/2025
v0.2.14CAUTION: Yanked Release ## [0.2.14](https://github.com/a2aproject/a2a-python/compare/v0.2.13...v0.2.14) (2025-07-18) ### Features * Set grpc dependencies as optional ([#322](https://github.com/a2aproject/a2a-python/issues/322)) ([365f158](https://github.com/a2aproject/a2a-python/commit/365f158f87166838b55bdadd48778cb313a453e1)) * **spec:** Update A2A types from specification 🤖 ([#325](https://github.com/a2aproject/a2a-python/issues/325)) ([02e7a31](https://github.com/a2aproject/a2a-Low7/18/2025
v0.2.13## [0.2.13](https://github.com/a2aproject/a2a-python/compare/v0.2.12...v0.2.13) (2025-07-17) ### Features * Add `get_data_parts()` and `get_file_parts()` helper methods ([#312](https://github.com/a2aproject/a2a-python/issues/312)) ([5b98c32](https://github.com/a2aproject/a2a-python/commit/5b98c3240db4ff6007e242742f76822fc6ea380c)) * Support for Database based Push Config Store ([#299](https://github.com/a2aproject/a2a-python/issues/299)) ([e5d99ee](https://github.com/a2aproject/a2a-python/comLow7/17/2025
v0.2.12## [0.2.12](https://github.com/a2aproject/a2a-python/compare/v0.2.11...v0.2.12) (2025-07-14) ### Features * add `metadata` property to `RequestContext` ([#302](https://github.com/a2aproject/a2a-python/issues/302)) ([e781ced](https://github.com/a2aproject/a2a-python/commit/e781ced3b082ef085f9aeef02ceebb9b35c68280)) * add A2ABaseModel ([#292](https://github.com/a2aproject/a2a-python/issues/292)) ([24f2eb0](https://github.com/a2aproject/a2a-python/commit/24f2eb0947112539cbd4e493c98d0d9dadc87f05)Low7/14/2025
v0.2.11## [0.2.11](https://github.com/a2aproject/a2a-python/compare/v0.2.10...v0.2.11) (2025-07-07) ### ⚠ BREAKING CHANGES * Removes `push_notifier` interface from the SDK and introduces `push_notification_config_store` and `push_notification_sender` for supporting push notifications. ### Features * Add constants for Well-Known URIs ([#271](https://github.com/a2aproject/a2a-python/issues/271)) ([1c8e12e](https://github.com/a2aproject/a2a-python/commit/1c8e12e448dc7469e508fccdac06818836f5b520)) * ALow7/8/2025
v0.2.10## [0.2.10](https://github.com/a2aproject/a2a-python/compare/v0.2.9...v0.2.10) (2025-06-30) ### ⚠ BREAKING CHANGES * Update to A2A Spec Version [0.2.5](https://github.com/a2aproject/A2A/releases/tag/v0.2.5) ([#197](https://github.com/a2aproject/a2a-python/issues/197)) ### Features * Add `append` and `last_chunk` to `add_artifact` method on `TaskUpdater` ([#186](https://github.com/a2aproject/a2a-python/issues/186)) ([8c6560f](https://github.com/a2aproject/a2a-python/commit/8c6560fd4Low6/30/2025
v0.2.9**Full Changelog**: https://github.com/a2aproject/a2a-python/compare/v0.2.8...v0.2.9 - Set `protobuf==5.29.5` and `fastapi>=0.115.2` to prevent version conflictsLow6/24/2025
v0.2.8## [0.2.8](https://github.com/google-a2a/a2a-python/compare/v0.2.7...v0.2.8) (2025-06-12) ### Features * Add HTTP Headers to ServerCallContext for Improved Handler Access ([#182](https://github.com/google-a2a/a2a-python/issues/182)) ([d5e5f5f](https://github.com/google-a2a/a2a-python/commit/d5e5f5f7e7a3cab7de13cff545a874fc58d85e46)) * Update A2A types from specification 🤖 ([#191](https://github.com/google-a2a/a2a-python/issues/191)) ([174230b](https://github.com/google-a2a/a2a-python/commit/Low6/13/2025
v0.2.7## [0.2.7](https://github.com/google-a2a/a2a-python/compare/v0.2.6...v0.2.7) (2025-06-11) ### Features * Update A2A types from specification 🤖 ([#179](https://github.com/google-a2a/a2a-python/issues/179)) ([3ef4240](https://github.com/google-a2a/a2a-python/commit/3ef42405f6096281fe90b1df399731bd009bde12))Low6/11/2025
v0.2.6## [0.2.6](https://github.com/google-a2a/a2a-python/compare/v0.2.5...v0.2.6) (2025-06-09) ### ⚠ BREAKING CHANGES * Add FastAPI JSONRPC Application ([#104](https://github.com/google-a2a/a2a-python/issues/104)) * **stream:** don't block event loop in EventQueue ([#151](https://github.com/google-a2a/a2a-python/issues/151)) ([efd9080](https://github.com/google-a2a/a2a-python/commit/efd9080b917c51d6e945572fd123b07f20974a64)) ### Features * Add FastAPI JSONRPC Application ([#104](https:Low6/9/2025
v0.2.5## [0.2.5](https://github.com/google-a2a/a2a-python/compare/v0.2.4...v0.2.5) (2025-05-27) ### Features * Add a User representation to ServerCallContext ([#116](https://github.com/google-a2a/a2a-python/issues/116)) ([2cc2a0d](https://github.com/google-a2a/a2a-python/commit/2cc2a0de93631aa162823d43fe488173ed8754dc)) * Add functionality for extended agent card. ([#31](https://github.com/google-a2a/a2a-python/issues/31)) ([20f0826](https://github.com/google-a2a/a2a-python/commit/20f0826a2cb9b77bLow5/27/2025
v0.2.4## [0.2.4](https://github.com/google/a2a-python/compare/v0.2.3...v0.2.4) (2025-05-22) ### Features * Update to support python 3.10 ([#85](https://github.com/google/a2a-python/issues/85)) ([fd9c3b5](https://github.com/google/a2a-python/commit/fd9c3b5b0bbef509789a701171d95f690c84750b)) ### Bug Fixes * Throw exception for task_id mismatches ([#70](https://github.com/google/a2a-python/issues/70)) ([a9781b5](https://github.com/google/a2a-python/commit/a9781b589075280bfaaab5742d8b950916c9de74))Low5/22/2025
v0.2.3## [0.2.3](https://github.com/google/a2a-python/compare/v0.2.2...v0.2.3) (2025-05-20) ### Features * Add request context builder with referenceTasks ([#56](https://github.com/google/a2a-python/issues/56)) ([f20bfe7](https://github.com/google/a2a-python/commit/f20bfe74b8cc854c9c29720b2ea3859aff8f509e))Low5/20/2025
v0.2.2## [0.2.2](https://github.com/google/a2a-python/compare/v0.2.1...v0.2.2) (2025-05-20) ### Documentation * Write/Update Docstrings for Classes/Methods ([#59](https://github.com/google/a2a-python/issues/59)) ([9f773ef](https://github.com/google/a2a-python/commit/9f773eff4dddc4eec723d519d0050f21b9ccc042))Low5/20/2025
v0.2.1Python SDK implementing A2A [v0.2.0](https://google.github.io/A2A/specification/)Low5/20/2025
v0.2.1a2Alpha2 build to test the deployment for RC1Low5/20/2025
v0.2.1a1Test publishing a preview releaseLow5/15/2025

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