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)
• client: transport agnostic interceptors (#796) (a910cbc), closes #757
• 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

• #757 (a910cbc)
• add history length and page size validations (#726) (e67934b), closes #515
• add metadata to send message request (12b4a1d)
• allign error codes with the latest spec (#826) (709b1ff)
• 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 represents the release of version 1.0.0-alpha.0, marking a significant milestone in aligning the project with the A2A 1.0 protocol specifications. It encompasses a broad range of changes, including critical breaking changes, numerous new features, and essential bug fixes. Key areas of focus include enhancing client-side extension capabilities, ensuring robust backward compatibility with previous protocol versions, and refining core functionalities such as task management, push notifications, and agent card handling.

Highlights

• Protocol and SDK Upgrade: The SDK has been upgraded to align with A2A 1.0 specifications, including an update to Protocol v1.0.0-rc, which introduces several breaking changes and ensures future compatibility.
• Client-side Extensions and Service Parameters: Introduced ServiceParameters for extensions within ClientCallContext and added general client-side extension support across REST, JSONRPC, and gRPC clients.
• Push Notification Configuration Renaming: The 'callback' parameter has been renamed to 'push_notification_config' in client configurations, reflecting a clearer intent for push notification management.
• Backward Compatibility Enhancements: Extensive compatibility features have been added for gRPC, REST, and JSONRPC clients and servers to ensure interoperability with v0.3 versions of the protocol, including legacy model support and unified URL prefixes.
• Vertex-based Task Store Implementation: A new vertex-based task store has been implemented, improving the storage and management of tasks within the system.
• Agent Card Signing and Verification: Implemented Agent Card Signing and Verification as per the A2A specification, enhancing security and integrity of agent cards.
• Tenant Context Propagation: Tenant context propagation has been implemented for both gRPC and JSON-RPC requests on the server side, improving multi-tenancy support.

Changelog

• .release-please-manifest.json
  • Updated the manifest to reflect the new release version 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.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for GitHub and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request is an automated release for version 1.0.0-alpha.0, generated by Release Please. The change updates the .release-please-manifest.json file to reflect the new version. This is a standard and correct modification for an automated release process. After reviewing the changes, I have found no issues or areas for improvement.

[ishymko]

Do not merge, release-please experimentation.