chore(1.0-dev): release 1.0.0-alpha.0

[a2a-bot]

🤖 I have created a release beep boop

1.0.0-alpha.0 (2026-03-13)

⚠ BREAKING CHANGES

• client: introduce ServiceParameters for extensions and include it in ClientCallContext (#784)
• client: rename "callback" -> "push_notification_config" (#749)
• Update to Protocol v1.0.0-rc and fix all tests (#665)
• upgrade SDK to A2A 1.0 specs (#572)

Features

• Add protocol_version column to Task and PushNotificationConfig models and create a migration (#789) (2e2d431)
• add async context manager support to BaseClient (#688) (ae9dc88)
• add async context manager support to ClientTransport (#682) (2e45c0d)
• Add client-side extension support (#525) (9a92bd2)
• Add custom ID generators to SimpleRequestContextBuilder (#594) (04bcafc)
• add GetExtendedAgentCardRequest as input parameter to GetExtendedAgentCard method (#767) (13a092f)
• Add validation for the JSON-RPC version (#808) (6eb7e41)
• client: allow specifying history_length via call-site MessageSendConfiguration in BaseClient.send_message (53bbf7a)
• client: expose close() and async context manager support on abstract Client (#719) (e25ba7b)
• compat: AgentCard backward compatibility helpers and tests (#760) (81f3494)
• compat: GRPC client compatible with 0.3 server (#779) (0ebca93)
• compat: GRPC Server compatible with 0.3 client (#772) (80d827a)
• compat: legacy v0.3 protocol models, conversion logic and utilities (#754) (26835ad)
• compat: REST and JSONRPC clients compatible with 0.3 servers. (#798) (08794f7), closes #742
• compat: REST and JSONRPC servers compatible with 0.3 clients. (#795) (9856054), closes #742
• compat: set a2a-version header to 1.0.0 (#764) (4cb68aa)
• compat: Unify v0.3 REST url prefix and expand cross-version tests (#820) (0925f0a)
• Database forward compatibility: make owner field optional (#812) (cc29d1f)
• handle tenant in Client (#758) (5b354e4)
• Implement a vertex based task store (#752) (fa14dbf)
• Implement a vertex based task store for the 1.0 branch (#791) (3b1eef7), closes #751
• Implement Agent Card Signing and Verification per Spec (8a76730)
• implement missing push notifications related methods (#711) (041f0f5)
• implement rich gRPC error details per A2A v1.0 spec (#790) (245eca3)
• jsonrpc: add option to disable oversized payload check in JSONRPC applications (ba142df)
• rest, jsonrpc: Add client-side extension support (9a92bd2)
• rest: add tenant support to rest (#773) (4771b5a)
• send task as a first subscribe event (#716) (e71ac62)
• server, grpc: Implement tenant context propagation for gRPC requests. (#781) (164f919)
• server, json-rpc: Implement tenant context propagation for JSON-RPC requests. (#778) (72a330d)
• server: add v0.3 legacy compatibility for database models (#783) (08c491e)
• server: implement Resource Scoping for tasks and push notifications (#709) (f0d4669)
• spec: Add tasks/list method with filtering and pagination to the specification (#511) (d5818e5)
• support async card modifiers (#654) (a802500)
• support disabling OTel instrumentation via env var (#611) (72216b9)
• use StreamResponse as push notifications payload (#724) (a149a09)

Bug Fixes

• add history length and page size validations (#726) (e67934b), closes #515
• add metadata to send message request (12b4a1d)
• client: align send_message signature with BaseClient (#740) (57cb529)
• core: preserve legitimate falsy values in _clean_empty (#713) (7632f55)
• deps: DeprecationWarning on HTTP_413_REQUEST_ENTITY_TOO_LARGE (#693) (9968f9c)
• do not crash on SSE comment line (#636) (3dcb847)
• Ensure metadata propagation for Task ToProto and FromProto conversion (#557) (fc31d03)
• fix bad "list tasks" merge for JSON-RPC (#698) (0623015)
• get_agent_card tailing slash when agent_card_path="" (#799) (#800) (a55c97e)
• gRPC metadata header casing and invocation_metadata() call (#676) (390b763)
• grpc: Add extensions to Artifact converters. (#523) (c03129b)
• handle parsing error in REST (#806) (bbd09f2)
• handle REST query params as per 1.0 spec (#804) (45b3059)
• Improve error handling for Timeout exceptions on REST and JSON-RPC clients (#690) (2acd838)
• Improve streaming errors handling (#576) (7ea7475)
• incorporate latest 1.0 proto changes (#788) (47a5959), closes #559
• jsonrpc, rest: extensions support in get_card methods in json-rpc and rest transports (#564) (847f18e)
• map rejected task state in proto converters (#668) (957e92b), closes #625
• properly handle unset and zero history length (#717) (72a1007)
• remove v1 from HTTP+REST/JSON paths (#765) (627ae0b)
• return background task from consume_and_break_on_interrupt to prevent GC (#775) (a236d4d)
• return entire history when history_length=0 (#537) (acdc0de)
• return mandatory fields from list_tasks (#710) (6132053), closes #515
• return updated agent_card in JsonRpcTransport.get_card() (#552) (0ce239e)
• server: fix deadlocks on agent execution failure in non-streaming (#614) (d3c973f)
• server: handle unwrapped legacy push notification configurations (#821) (1f51bdf)
• taskslist error on invalid page token and response serialization (#814) (a102d31)
• use correct REST path for Get Extended Agent Card operation (#769) (ced3f99), closes #559
• use default_factory for mutable field defaults in ServerCallContext (#744) (22b25d6)

Documentation

• explicitly mention supported spec version and transports in readme (#681) (c91d4fb), closes #677
• Fixing typos (#586) (5fea21f)
• Update README to include Code Wiki badge (2698cc0)

Miscellaneous Chores

• release v1.0.0-alpha.0 (11aa35c)
• Revert "chore(main): release 0.4.0" (#554) (5c59c1a)

Code Refactoring

• client: introduce ServiceParameters for extensions and include it in ClientCallContext (#784) (942f4ae)
• client: rename "callback" -> "push_notification_config" (#749) (7dec763)
• Move agent card signature verification into A2ACardResolver (6fa6a6c)
• Update to Protocol v1.0.0-rc and fix all tests (#665) (3358305)
• upgrade SDK to A2A 1.0 specs (#572) (1cc993c)

---

This PR was generated with Release Please. See documentation.

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request marks the release of version "1.0.0-alpha.0" for the A2A Python SDK. It represents a significant advancement, aligning the SDK with the A2A 1.0 protocol specifications. The changes encompass several breaking changes, a wide array of new features, and numerous bug fixes, all aimed at enhancing functionality, compatibility, and robustness.

Highlights

• Major Version Upgrade: The SDK has been upgraded to A2A 1.0 specifications, including several breaking changes to client interfaces and push notification configurations.
• Protocol Updates: The project now aligns with Protocol v1.0.0-rc, incorporating ServiceParameters for extensions and fixing various related tests.
• Compatibility Enhancements: Extensive backward and forward compatibility features have been added for GRPC, REST, and JSONRPC clients and servers to interact with v0.3 protocol versions.
• New Features: Introduced async context manager support for clients, client-side extension support, a vertex-based task store, agent card signing and verification, and rich gRPC error details.
• Database Migrations: A protocol_version column was added to Task and PushNotificationConfig models, along with a migration.

Changelog

• .release-please-manifest.json
  • Updated the recorded version for the root project to "1.0.0-alpha.0".
• pyproject.toml
  • Updated the project version from "0.3.25" to "1.0.0-alpha.0".

Ignored Files

• Ignored by pattern: CHANGELOG.md (1)
  • CHANGELOG.md

Activity

• The pull request was automatically generated by the Release Please bot to create the 1.0.0-alpha.0 release.

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[gemini-code-assist]

Code Review

This pull request updates the package version to 1.0.0-alpha.0 in pyproject.toml and updates the .release-please-manifest.json file. These changes are part of the release process and appear to be correct. There are no issues with the proposed changes.