a2aproject/a2a-python

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Official Python SDK for the Agent2Agent (A2A) Protocol

Stars: 2.2k
Forks: 496
Open beginner issues: 6
Indexed issues: 35
Avg merge: 1d 23h
Merged PRs (30d): 16

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 13, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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30 open issues indexed

agent_card_to_dict omits the REQUIRED empty skills field Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

a2aproject/a2a-python#1261 · Opened Sep 21, 2026
Create push notification config returns no id on database-backed stores Open

component: server status:awaiting response

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

a2aproject/a2a-python#1237 · 1 comment · 1 assignee · Opened Sep 11, 2026
[Bug]: Internal error messages leak into responses Open

component: server

Difficulty 3/5 1-2 days Newbie friendliness 55/100

a2aproject/a2a-python#1232 · 1 assignee · Opened Sep 9, 2026
[Bug]: get_info_for_dispatch default resolves to empty owner in multi-owner deployments Open

component: server maintainers-only

Difficulty 3/5 1-2 days Newbie friendliness 65/100

a2aproject/a2a-python#1231 · Opened Sep 8, 2026
[Feat]: Allow configuring `shutdown_grace_period` for SSE responses Open

component: server

Difficulty 3/5 1-2 days Newbie friendliness 65/100

a2aproject/a2a-python#1221 · 2 comments · 1 assignee · Opened Aug 30, 2026
[Bug]: In-memory push store keeps the caller object so later mutations rewrite stored webhooks Open

component: server status:awaiting response status:stale

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

a2aproject/a2a-python#1215 · 2 comments · 1 assignee · Opened Aug 27, 2026
[Feat]: NoSQL (MongoDB) TaskStore / PushNotificationConfigStore backend — production-verified reference implementation available Open

component: server status: needs review

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1210 · 2 comments · 1 assignee · Opened Aug 27, 2026
[Bug]: `taskId` without `contextId` creates a new context instead of inheriting it Open

component: server status:awaiting response status:stale

Difficulty 3/5 1-2 days Newbie friendliness 65/100

a2aproject/a2a-python#1206 · 3 comments · 1 assignee · Opened Aug 25, 2026
[Bug]: Wrong error when sending a message for a terminal task Open

component: server status:awaiting response status:stale

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

a2aproject/a2a-python#1205 · 3 comments · 1 assignee · Opened Aug 25, 2026
[Bug]: `A2A-Version` validation ignores minor versions and the query parameter Open

component: server status:awaiting response status:stale

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

a2aproject/a2a-python#1204 · 2 comments · 1 assignee · Opened Aug 25, 2026
message/send JSON-RPC result is wrapped in the SendMessageResponse oneof instead of returning the Task/Message directly Open

component: server

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

a2aproject/a2a-python#1192 · 3 comments · 1 assignee · Opened Aug 19, 2026
[Bug] DefaultRequestHandlerV2: ActiveTaskRegistry resumes from a stale task snapshot after input_required, silently overwriting store state (multi-replica deployments) Open

component: server

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1188 · 3 comments · 1 assignee · Opened Aug 14, 2026
cancel() and producer-failure write a terminal state to the store but not to active subscriber streams Open

component: server status:awaiting response status:stale

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1175 · 6 comments · 1 assignee · Opened Aug 10, 2026
[Bug]: raised InvalidAgentResponseError Open

component: server

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1113 · 4 comments · 1 assignee · Opened Jun 23, 2026
[Bug]: Response Stream Array-Wrapping Crash (Transport Layer Mismatch) Open

component: client

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1089 · 6 comments · 1 assignee · Opened May 29, 2026
Feat]: Client-side utility for assembling artifacts from update events Open

component: client maintainers-only

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1030 · 1 comment · Opened Apr 29, 2026
[Task]: Prepare URL validation infrastructure for agent card and webhook SSRF protection Open

component: core

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#1023 · 2 comments · Opened Apr 27, 2026
[Feat]: Agent card validation hook Open

maintainers-only

Difficulty 3/5 1-2 days Newbie friendliness 55/100

a2aproject/a2a-python#975 · 5 comments · Opened Apr 16, 2026
[Feat]: Generate Pydantic models from proto definition for Python-idiomatic validation for A2A Version 1.0.x Open

component: core

Difficulty 4/5 3-5 days Newbie friendliness 35/100

a2aproject/a2a-python#884 · 33 comments · Opened Mar 21, 2026
[Feat]: Add RetryTransport for automatic retry with exponential backoff Open

component: client

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#871 · 6 comments · 1 assignee · Opened Mar 19, 2026
[Feat]: Add streaming-aware helper for artifact updates Open

component: core help wanted

Difficulty 3/5 1-2 days Newbie friendliness 55/100

a2aproject/a2a-python#833 · 2 comments · 1 assignee · Opened Mar 15, 2026
[Bug]: REST task/request id sanitization Open

maintainers-only

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

a2aproject/a2a-python#805 · 1 comment · Opened Mar 11, 2026
Security Improvement: Add SSRF protection for Push Notification webhooks and authorization checks for Task operations Open

component: server status: needs review

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#786 · 7 comments · 1 assignee · Opened Mar 8, 2026
[Task]: 1.0: Run TCK tests against 1.0 implementation Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#666 · 3 comments · Opened Feb 3, 2026
[Feat]: passing call context to unauthenticated card modifier Open

component: core

Difficulty 3/5 1-2 days Newbie friendliness 55/100

a2aproject/a2a-python#657 · 7 comments · 1 assignee · Opened Feb 1, 2026
[Feat]: PushNotificationConfig.authentication is ignored; no Authorization header is sent in push notifications Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

a2aproject/a2a-python#585 · 10 comments · 1 assignee · Opened Dec 11, 2025
[Feat]: Support adding new RPC methods to a JSON-RPC server application Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#584 · 1 comment · 1 assignee · Opened Dec 11, 2025
[Feat]: Support JSON-RPC Responses for Decoupled Pub/Sub Push Communication in Message-Driven Architectures Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

a2aproject/a2a-python#571 · 4 comments · 3 reactions · Opened Nov 28, 2025
[Feat]: feat(transport): add stdio transport to run A2A protocol over process pipes Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

a2aproject/a2a-python#526 · 2 comments · 1 assignee · Opened Oct 31, 2025
[Feat]: Improve client auth handling Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

a2aproject/a2a-python#445 · 6 comments · Opened Aug 29, 2025

a2aproject/a2a-python

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