refactor(spec)!: Combine `TaskPushNotificationConfig` and `PushNotificationConfig` by herczyn · Pull Request #1500 · a2aproject/A2A

herczyn · 2026-02-18T08:23:14Z

this PR:

removes CreateTaskPushNotificationConfigRequest and replace it with TaskPushNotificationConfig (same fields).
flattend TaskPushNotificationConfig and PushNotificationConfig removing the latter
puts TaskPushNotificationConfig in SendMessageConfig instead of the removed PushNotificationConfig

why: more readable structure, with less messages but with the same possibilities

Release-As: 1.0.0

gemini-code-assist · 2026-02-18T08:23:29Z

Summary of Changes

Hello @herczyn, 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 refactors the protobuf definitions related to push notification configurations to enhance readability and reduce message complexity. By consolidating related fields and removing redundant request messages, the changes aim to provide a more straightforward and flattened structure for managing task-specific push notifications, while maintaining the same functional capabilities.

Highlights

API Request Simplification: The CreateTaskPushNotificationConfigRequest message has been removed and its functionality merged directly into TaskPushNotificationConfig, simplifying the API for creating push notification configurations.
Configuration Message Flattening: The PushNotificationConfig message has been eliminated, and its fields have been directly integrated into TaskPushNotificationConfig, reducing message nesting and improving clarity.
Updated Message Configuration: The SendMessageConfiguration now directly references TaskPushNotificationConfig instead of the removed PushNotificationConfig, streamlining the structure for sending messages with push notification settings.

Changelog

specification/a2a.proto
- Updated the CreateTaskPushNotificationConfig RPC method to directly accept TaskPushNotificationConfig as its request parameter.
- Replaced the push_notification_config field with task_push_notification_config in the SendMessageConfiguration message.
- Removed the PushNotificationConfig message definition.
- Flattened the TaskPushNotificationConfig message by embedding the fields previously contained within PushNotificationConfig directly into it.
- Deleted the CreateTaskPushNotificationConfigRequest message definition.

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gemini-code-assist

Code Review

This pull request refactors the push notification configuration messages to simplify the structure by removing PushNotificationConfig and CreateTaskPushNotificationConfigRequest. While the goal of simplification is good, the changes have introduced some critical inconsistencies in the CreateTaskPushNotificationConfig RPC definition and a problematic REQUIRED constraint on the task_id field. My review includes suggestions to fix these issues to ensure the protocol definition is valid and consistent.

specification/a2a.proto

Tehsmash

LGTM, but its hitting an AIP linter issue. We do have the correct comment in place for ignoring AIP-133 but it doesn't seem to be applying it properly maybe because the extra comment line inbetween?

holtskinner · 2026-02-18T15:55:53Z

@gemini-code-assist review

gemini-code-assist

Code Review

This pull request refactors the A2A protocol by combining TaskPushNotificationConfig and PushNotificationConfig messages, and removing CreateTaskPushNotificationConfigRequest. This simplifies the API structure and improves readability as described in the PR description. The changes are generally well-aligned with the stated objective, with one comment modified to include a check against authentication best practices.

specification/a2a.proto

herczyn · 2026-02-18T15:59:14Z

/vote

git-vote · 2026-02-18T15:59:18Z

Vote created

@herczyn has called for a vote on refactor(spec)!: Combine TaskPushNotificationConfigandPushNotificationConfig`` (#1500).

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The vote will be open for 11months 29days 3h 50m 24s. It will pass if at least 51% of the users with binding votes vote In favor 👍. Once it's closed, results will be published here as a new comment.

amye · 2026-02-19T00:05:07Z

@a2aproject/a2a-tsc - ping for review

git-vote · 2026-02-19T16:11:20Z

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git-vote · 2026-02-20T16:12:07Z

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git-vote · 2026-02-21T16:13:34Z

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git-vote · 2026-02-22T16:42:07Z

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git-vote · 2026-02-23T16:43:35Z

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specification/a2a.proto

darrelmiller · 2026-02-24T15:46:47Z

I'm for this change in principle, I just want to get clarity on the issue around the "required" for taskId

git-vote · 2026-02-24T17:12:08Z

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git-vote · 2026-02-25T17:13:35Z

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git-vote · 2026-02-26T17:42:08Z

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git-vote · 2026-02-27T17:43:35Z

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git-vote · 2026-02-28T18:12:08Z

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git-vote · 2026-03-01T18:13:36Z

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git-vote · 2026-03-02T18:42:09Z

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git-vote · 2026-03-03T12:42:34Z

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@herczyn	In favor	2026-02-18 16:03:56.0 +00:00:00
@holtskinner	In favor	2026-02-20 17:08:51.0 +00:00:00

Fix error caused by #1500: × Failed to build `a2a-sdk @ file:///home/runner/work/a2a-python/a2a-python` ├─▶ The build backend returned an error ╰─▶ Call to `hatchling.build.build_editable` failed (exit status: 1) [stderr] Failure: failed_precondition: plugin "buf.build/grpc-ecosystem/openapiv2:v2.28.0" failed: no field "config" found in TaskPushNotificationConfig

Mainly a2aproject/A2A#1500 which required many changes. Generated from a2aproject/A2A@aca981c. `buf.gen.yaml` is updated to `main` again.

Mainly a2aproject/A2A#1500 which required many changes. Generated from a2aproject/A2A@aca981c. `buf.gen.yaml` is updated to `main` again. Re #559

🤖 I have created a release *beep* *boop* --- ## [1.0.0](v0.3.0...v1.0.0) (2026-03-12) ### ⚠ BREAKING CHANGES * **spec:** Combine `TaskPushNotificationConfig` and `PushNotificationConfig` ([#1500](#1500)) * **spec:** remove duplicated ID from the create task push config request ([#1487](#1487)) * **spec:** pluralize configs in `ListTaskPushNotificationConfigs` ([#1486](#1486)) * **spec:** Add LF prefix to the package. ([#1474](#1474)) * **spec:** Switch to non-complex IDs in requests ([#1389](#1389)) * **spec:** Standardize spelling of "canceled" to use American Spelling throughout ([#1283](#1283)) * **spec:** Align enum format with ADR-001 ProtoJSON specification ([#1384](#1384)) * **spec:** Remove redundant `final` field from `TaskStatusUpdateEvent` ([#1308](#1308)) * **spec:** Move `extendedAgentCard` field to `AgentCapabilities` ([#1307](#1307)) * **spec:** Fixes for the last_updated_after field ([#1358](#1358)) * **spec:** modernize oauth 2.0 flows - remove implicit/password, add device code / pkce ([#1303](#1303)) * **spec:** Make "message" field name consistent between protocol bindings ([#1302](#1302)) * **spec:** Remove deprecated fields from a2a.proto for v1.0 release ([#1301](#1301)) * **spec:** Rename `supportsAuthenticatedExtendedCard` to `supportsExtendedAgentCard` ([#1222](#1222)) * **spec:** Remove v1s from a2a url http bindings * **spec:** Large refactor of specification to separate application protocol definition from mapping to transports ### Features * **spec:** Add `tasks/list` method with filtering and pagination to the specification ([0a9f629](0a9f629)) * **spec:** modernize oauth 2.0 flows - remove implicit/password, add device code / pkce ([#1303](#1303)) ([525ff38](525ff38)) * **spec:** Natively Support Multi-tenancy on gRPC through an additional scope field on the request. ([#1195](#1195)) ([cfbce32](cfbce32)), closes [#1148](#1148) * **spec:** Provide ability for SDKs to be backwards compatible. ([#1401](#1401)) ([227e249](227e249)) * **spec:** Remove v1s from a2a url http bindings ([1bd263f](1bd263f)) ### Bug Fixes * Add missing metadata field to Part message in gRPC specification ([#1019](#1019)) ([b3b266d](b3b266d)), closes [#1005](#1005) * Add name field to FilePart protobuf message ([#983](#983)) ([2b7cb6f](2b7cb6f)), closes [#984](#984) * Clarify blocking calls return on interrupted states ([#1403](#1403)) ([0655ff3](0655ff3)) * **doc:** Makes JSON-RPC SendMessage response clearer ([#1241](#1241)) ([5792804](5792804)) * **docs:** Clearer wording around context id. ([#1588](#1588)) ([dec790a](dec790a)) * **grpc:** Fix inconsistent property name between gRPC and JSON-RPC in Message object ([#1100](#1100)) ([2a1f819](2a1f819)) * **grpc:** missing field in gRPC spec - state_transition_history ([#1138](#1138)) ([a2de798](a2de798)), closes [#1139](#1139) * **grpc:** Update `CreateTaskPushNotificationConfig` endpoint to `/v1/{parent=tasks/*/pushNotificationConfigs}` ([#979](#979)) ([911f9b0](911f9b0)) * **proto:** Add icon_url to a2a.proto ([#986](#986)) ([17e7f62](17e7f62)) * **proto:** Adds metadata field to A2A DataPart proto ([#1004](#1004)) ([a8b45dc](a8b45dc)) * Remove unimplemented state_transition_history capability field ([#1396](#1396)) ([c768a44](c768a44)), closes [#1228](#1228) * Restore CreateTaskPushNotificationConfig method naming ([#1402](#1402)) ([d14f410](d14f410)) * Revert "chore(gRPC): Update a2a.proto to include metadata on GetTaskRequest" ([#1000](#1000)) ([e6b8c65](e6b8c65)) * Simplify Part message structure by flattening FilePart and DataPart ([#1411](#1411)) ([bfae8f7](bfae8f7)) * **spec:** Add LF prefix to the package. ([#1474](#1474)) ([a54e809](a54e809)) * **spec:** add metadata to `CancelTaskRequest` ([#1485](#1485)) ([c441b91](c441b91)), closes [#1484](#1484) * **spec:** Added clarification on timestamps in HTTP query params ([#1425](#1425)) ([6292104](6292104)) * **spec:** Added clarifying text around messages and artifacts ([#1424](#1424)) ([b03d141](b03d141)) * **spec:** Adjust field number for `ListTasksRequest.tenant` to prevent missing number ([#1470](#1470)) ([cd16c52](cd16c52)) * **spec:** Clarify contextId behavior when message is sent with taskId but without contextId ([#1309](#1309)) ([a336a5a](a336a5a)) * **spec:** Clarify versioning strategy and client responsibilities in protocol specification ([#1259](#1259)) ([a4afeea](a4afeea)) * **spec:** Fix/1251 clarify authentication scheme ([#1256](#1256)) ([3e6c7db](3e6c7db)) * **spec:** Fixes for the last_updated_after field ([#1358](#1358)) ([0e204bf](0e204bf)) * **spec:** Make "message" field name consistent between protocol bindings ([#1302](#1302)) ([1e5f462](1e5f462)), closes [#1230](#1230) * **spec:** make `history_length` optional ([#1071](#1071)) ([0572953](0572953)) * **spec:** pluralize configs in `ListTaskPushNotificationConfigs` ([#1486](#1486)) ([cf735cb](cf735cb)) * **spec:** Remove config from binding. ([#1587](#1587)) ([010b9cc](010b9cc)) * **spec:** Remove deprecated fields from a2a.proto for v1.0 release ([#1301](#1301)) ([60f83c3](60f83c3)), closes [#1227](#1227) * **spec:** remove duplicated ID from the create task push config request ([#1487](#1487)) ([393898d](393898d)) * **spec:** Remove metadata field from ListTasksRequest ([#1235](#1235)) ([b6ef9ee](b6ef9ee)) * **spec:** Remove reserved and fix tags ordering ([#1494](#1494)) ([1997c9d](1997c9d)) * **spec:** Rename `supportsAuthenticatedExtendedCard` to `supportsExtendedAgentCard` ([#1222](#1222)) ([c196824](c196824)), closes [#1215](#1215) * **spec:** Standardize spelling of "canceled" to use American Spelling throughout ([#1283](#1283)) ([4dd980f](4dd980f)) * **spec:** Suggest Unique Identifier fields to be UUID ([#966](#966)) ([00cf76e](00cf76e)) * **spec:** Switch to non-complex IDs in requests ([#1389](#1389)) ([2596c1c](2596c1c)), closes [#1390](#1390) * **spec:** Update security schemes example ([#1364](#1364)) ([f9a8f5b](f9a8f5b)) * Update the Java tutorials and descriptions ([#1181](#1181)) ([202aa06](202aa06)) ### Documentation * **spec:** Align enum format with ADR-001 ProtoJSON specification ([#1384](#1384)) ([810eaa1](810eaa1)), closes [#1344](#1344) ### Code Refactoring * **spec:** Combine `TaskPushNotificationConfig` and `PushNotificationConfig` ([#1500](#1500)) ([d1ed0da](d1ed0da)) * **spec:** Large refactor of specification to separate application protocol definition from mapping to transports ([b078419](b078419)) * **spec:** Move `extendedAgentCard` field to `AgentCapabilities` ([#1307](#1307)) ([40d6286](40d6286)) * **spec:** Remove redundant `final` field from `TaskStatusUpdateEvent` ([#1308](#1308)) ([5b101cc](5b101cc)) --- 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: Amye Scavarda Perrin <amye@amye.org> Co-authored-by: Holt Skinner <13262395+holtskinner@users.noreply.github.com>

Cleanup task/pushnotification configs.

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herczyn requested a review from a team as a code owner February 18, 2026 08:23

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fix pi linter

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holtskinner changed the title ~~fix(spec)!: Clean up TaskPushNotificationConfig and PushNotificationConfig.~~ refactor(spec)!: Combine TaskPushNotificationConfig and PushNotificationConfig Feb 18, 2026

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Merge branch 'main' into main

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remove required

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herczyn merged commit d1ed0da into a2aproject:main Mar 3, 2026
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github-project-automation bot moved this from Backlog to Done in TSC Review Mar 3, 2026

a2a-bot mentioned this pull request Mar 2, 2026

chore(main): release 1.0.0 #1221

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herczyn mentioned this pull request Mar 4, 2026

fix(spec): Remove config from binding. #1587

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ishymko added a commit to a2aproject/a2a-python that referenced this pull request Mar 9, 2026

fix: incorporate latest 1.0 proto changes

1426720

Mainly a2aproject/A2A#1500 which required many changes. Generated from a2aproject/A2A@aca981c. `buf.gen.yaml` is updated to `main` again.

ishymko mentioned this pull request Mar 9, 2026

fix: incorporate latest 1.0 proto changes a2aproject/a2a-python#788

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herczyn commented Feb 18, 2026 •

edited by holtskinner

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