chore(main): release 1.1.0 (#1073)

🤖 I have created a release *beep* *boop*
---


##
[1.1.0](v1.0.3...v1.1.0)
(2026-05-29)


### Features

* **server:** restore FastAPI /docs visibility for A2A routes
([#1024](#1024))
([1122d4e](1122d4e))


### Bug Fixes

* **compat:** remove ListTasks from v0.3 REST adapter
([#1043](#1043))
([#1068](#1068))
([5c88793](5c88793))
* properly convert metadata to dict in `RequestContext.metadata`
([#1081](#1081))
([d2f2e18](d2f2e18))
* raise on append=True for unknown artifact_id
([#1038](#1038))
([#1077](#1077))
([fe1f24b](fe1f24b))
* release reference count on non-terminal exit to prevent stale registry
entries ([#1079](#1079))
([501255c](501255c))
* **server:** preserve non-ASCII characters in streaming JSON responses
([#1080](#1080))
([d46c6f9](d46c6f9))
* **telemetry:** don't mark QueueShutDown as an error span
([#1075](#1075))
([54a485c](54a485c))


### Documentation

* clarify `EventQueue` usage
([#1066](#1066))
([11dd68a](11dd68a))


### Miscellaneous Chores

* release 1.1.0
([#1088](#1088))
([3058a33](3058a33))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

chore(main): release 1.0.3 (#1020)

🤖 I have created a release *beep* *boop*
---


##
[1.0.3](v1.0.2...v1.0.3)
(2026-05-13)


### Features

* **helpers:** add non-text Part extractors and artifact update events
([745d998](745d998))


### Bug Fixes

* **deps:** cap protobuf below 7
([#1019](#1019))
([7af6050](7af6050))
* **errors:** align error mappings with A2A spec
([#1055](#1055))
([4e01a91](4e01a91))
* **errors:** emit JSON-RPC error.data as typed-details array per A2A
1.0 spec hot-fix
([#1058](#1058))
([3ce65c5](3ce65c5))
* Improve task_push_notification_config presence check.
([#1047](#1047))
([94ad594](94ad594))


### Documentation

* high level active task architecture documentation
([#1056](#1056))
([09a2221](09a2221))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

test: setup itk resubscribe tests (#1031)

# Description

PR adjusts itk tests with resubscribe behavior check

Thank you for opening a Pull Request!
Before submitting your PR, there are a few things you can do to make
sure it goes smoothly:

- [ ] Follow the [`CONTRIBUTING`
Guide](https://github.com/a2aproject/a2a-python/blob/main/CONTRIBUTING.md).
- [ ] Make your Pull Request title in the
<https://www.conventionalcommits.org/> specification.
- Important Prefixes for
[release-please](https://github.com/googleapis/release-please):
- `fix:` which represents bug fixes, and correlates to a
[SemVer](https://semver.org/) patch.
- `feat:` represents a new feature, and correlates to a SemVer minor.
- `feat!:`, or `fix!:`, `refactor!:`, etc., which represent a breaking
change (indicated by the `!`) and will result in a SemVer major.
- [ ] Ensure the tests and linter pass (Run `bash scripts/format.sh`
from the repository root to format)
- [ ] Appropriate docs were updated (if necessary)

Fixes #<issue_number_goes_here> 🦕

Co-authored-by: Krzysztof Dziedzic <[email protected]>

chore(main): release 1.0.2 (#1012)

🤖 I have created a release *beep* *boop*
---


##
[1.0.2](v1.0.1...v1.0.2)
(2026-04-24)


### Features

* **helpers:** add non-text Part, Message, and Artifact helpers
([#1004](#1004))
([cfdbe4c](cfdbe4c))


### Bug Fixes

* **proto:** use field.label instead of is_repeated for protobuf
compatibility
([#1010](#1010))
([7d197db](7d197db))
* **server:** deliver push notifications across all owners
([#1016](#1016))
([c24ae05](c24ae05))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

chore(main): release 1.0.1 (#1007)

🤖 I have created a release *beep* *boop*
---


##
[1.0.1](v1.0.0...v1.0.1)
(2026-04-22)


### Bug Fixes

* **compat:** avoid unconditional grpc import in v0.3 context builders
([#1006](#1006))
([6b46ceb](6b46ceb))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: Ivan Shymko <[email protected]>

chore(main): release 1.0.0 (#997)

🤖 I have created a release *beep* *boop*
---


##
[1.0.0](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](#999))

### Bug Fixes

* rely on agent executor implementation for stream termination
([#988](#988))
([d77cd68](d77cd68))


### Documentation

* add comprehensive v0.3 to v1.0 migration guide
([#987](#987))
([10dea8b](10dea8b))


### Miscellaneous Chores

* release 1.0.0
([530ec37](530ec37))
* remove Vertex AI Task Store integration
([#999](#999))
([7fce2ad](7fce2ad))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

---------

Co-authored-by: Ivan Shymko <[email protected]>

chore(1.0-dev): release 1.0.0-alpha.3 (#986)

🤖 I have created a release *beep* *boop*
---


##
[1.0.0-alpha.3](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](#985))
([e1d0e7a](e1d0e7a))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

chore(1.0-dev): release 1.0.0-alpha.2 (#971)

🤖 I have created a release *beep* *boop*
---


##
[1.0.0-alpha.2](v1.0.0-alpha.1...v1.0.0-alpha.2)
(2026-04-17)


### ⚠ BREAKING CHANGES

* clean helpers and utils folders structure
([#983](#983))
* Raise errors on invalid AgentExecutor behavior.
([#979](#979))
* extract developer helpers in helpers folder
([#978](#978))

### Features

* Raise errors on invalid AgentExecutor behavior.
([#979](#979))
([f4a0bcd](f4a0bcd))
* **utils:** add `display_agent_card()` utility for human-readable
AgentCard inspection
([#972](#972))
([3468180](3468180))


### Bug Fixes

* Don't generate empty metadata change events in VertexTaskStore
([#974](#974))
([b58b03e](b58b03e)),
closes [#802](#802)
* **extensions:** support both header names and remove "activation"
concept ([#984](#984))
([b8df210](b8df210))


### Documentation

* AgentExecutor interface documentation
([#976](#976))
([d667e4f](d667e4f))
* move `ai_learnings.md` to local-only and update `GEMINI.md`
([#982](#982))
([f6610fa](f6610fa))


### Code Refactoring

* clean helpers and utils folders structure
([#983](#983))
([c87e87c](c87e87c))
* extract developer helpers in helpers folder
([#978](#978))
([5f3ea29](5f3ea29))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

chore(1.0-dev): release 1.0.0-alpha.1 (#861)

🤖 I have created a release *beep* *boop*
---


##
[1.0.0-alpha.1](v1.0.0-alpha.0...v1.0.0-alpha.1)
(2026-04-10)


### ⚠ BREAKING CHANGES

* **client:** make ClientConfig.push_notification_config singular
([#955](#955))
* **client:** reorganize ClientFactory API
([#947](#947))
* **server:** add build_user function to DefaultContextBuilder to allow
A2A user creation customization
([#925](#925))
* **client:** remove `ClientTaskManager` and `Consumers` from client
([#916](#916))
* **server:** migrate from Application wrappers to Starlette route-based
endpoints for rest
([#892](#892))
* **server:** migrate from Application wrappers to Starlette route-based
endpoints for jsonrpc
([#873](#873))

### Features

* A2A Version Header validation on server side.
([#865](#865))
([b261ceb](b261ceb))
* Add GetExtendedAgentCard Support to RequestHandlers
([#919](#919))
([2159140](2159140))
* Add support for more Task Message and Artifact fields in the Vertex
Task Store ([#936](#936))
([605fa49](605fa49))
* Create EventQueue interface and make tap() async.
([#914](#914))
([9ccf99c](9ccf99c)),
closes [#869](#869)
* EventQueue - unify implementation between python versions
([#877](#877))
([7437b88](7437b88)),
closes [#869](#869)
* EventQueue is now a simple interface with single enqueue_event method.
([#944](#944))
([f0e1d74](f0e1d74))
* Implementation of DefaultRequestHandlerV2
([#933](#933))
([462eb3c](462eb3c)),
closes [#869](#869)
* InMemoryTaskStore creates a copy of Task by default to make it
consistent with database task stores
([#887](#887))
([8c65e84](8c65e84)),
closes [#869](#869)
* merge metadata of new and old artifact when append=True
([#945](#945))
([cc094aa](cc094aa))
* **server:** add async context manager support to EventQueue
([#743](#743))
([f68b22f](f68b22f))
* **server:** validate presence according to `google.api.field_behavior`
annotations
([#870](#870))
([4586c3e](4586c3e))
* Simplify ActiveTask.subscribe()
([#958](#958))
([62e5e59](62e5e59))
* Support AgentExectuor enqueue of a Task object.
([#960](#960))
([12ce017](12ce017))
* Support Message-only simplified execution without creating Task
([#956](#956))
([354fdfb](354fdfb))
* Unhandled exception in AgentExecutor marks task as failed
([#943](#943))
([4fc6b54](4fc6b54))


### Bug Fixes

* Add `packaging` to base dependencies
([#897](#897))
([7a9aec7](7a9aec7))
* **client:** do not mutate SendMessageRequest in
BaseClient.send_message
([#949](#949))
([94537c3](94537c3))
* fix `athrow()` RuntimeError on streaming responses
([#912](#912))
([ca7edc3](ca7edc3))
* fix docstrings related to `CallContextBuilder` args in constructors
and make ServerCallContext mandatory in `compat` folder
([#907](#907))
([9cade9b](9cade9b))
* fix error handling for gRPC and SSE streaming
([#879](#879))
([2b323d0](2b323d0))
* fix JSONRPC error handling
([#957](#957))
([6c807d5](6c807d5))
* fix REST error handling
([#893](#893))
([405be3f](405be3f))
* handle SSE errors occurred after stream started
([#894](#894))
([3a68d8f](3a68d8f))
* remove the use of deprecated types from VertexTaskStore
([#889](#889))
([6d49122](6d49122))
* Remove unconditional SQLAlchemy dependency from SDK core
([#898](#898))
([ab762f0](ab762f0)),
closes [#883](#883)
* remove unused import and request for FastAPI in pyproject
([#934](#934))
([fe5de77](fe5de77))
* replace stale entry in a2a.types.__all__ with actual import name
([#902](#902))
([05cd5e9](05cd5e9))
* wrong method name for ExtendedAgentCard endpoint in JsonRpc compat
version ([#931](#931))
([5d22186](5d22186))


### Documentation

* add Database Migration Documentation
([#864](#864))
([fd12dff](fd12dff))


### Miscellaneous Chores

* release 1.0.0-alpha.1
([a61f6d4](a61f6d4))


### Code Refactoring

* **client:** make ClientConfig.push_notification_config singular
([#955](#955))
([be4c5ff](be4c5ff))
* **client:** remove `ClientTaskManager` and `Consumers` from client
([#916](#916))
([97058bb](97058bb)),
closes [#734](#734)
* **client:** reorganize ClientFactory API
([#947](#947))
([01b3b2c](01b3b2c))
* **server:** add build_user function to DefaultContextBuilder to allow
A2A user creation customization
([#925](#925))
([2648c5e](2648c5e))
* **server:** migrate from Application wrappers to Starlette route-based
endpoints for jsonrpc
([#873](#873))
([734d062](734d062))
* **server:** migrate from Application wrappers to Starlette route-based
endpoints for rest
([#892](#892))
([4be2064](4be2064))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

chore(main): release 0.3.26 (#935)

🤖 I have created a release *beep* *boop*
---


##
[0.3.26](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](#908))
([5e0dcd7](5e0dcd7))


### Bug Fixes

* remove the use of deprecated types from VertexTaskStore
([#889](#889))
([6d49122](6d49122))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).