a2aproject/a2a-samples

Samples using the Agent2Agent (A2A) Protocol

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Forks: 751
Open beginner issues: 0
Indexed issues: 125

Dominant language: Jupyter Notebook
License: Apache-2.0
Last GitHub push: Aug 4, 2026
Latest indexed: Sep 13, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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125 open issues indexed

Marvin Agent - 503 Errors Open

a2aproject/a2a-samples#152 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Support for embedded UI components Open

a2aproject/a2a-samples#160 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 13, 2026
A2A-MCP with langgraph and semantic kernel Open

a2aproject/a2a-samples#169 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
MultiAgent, How to support every Agent Stream output? Open

a2aproject/a2a-samples#174 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 13, 2026
[Java Example] task stream output error Open

a2aproject/a2a-samples#181 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
5s mcp timout - no StdioConnectionParams sample code Open

a2aproject/a2a-samples#187 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
DateTime stamp format issues when using mixed A2A language implementations (python + Java) Open

a2aproject/a2a-samples#192 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
How do Remote Agents communicate with each other? Open

a2aproject/a2a-samples#195 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
A2a Samples - veo_video_gen Running command uv run . --agent http://localhost:10003 getting errors Open

a2aproject/a2a-samples#202 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Can an agent interact without going through the hostAgent? Open

a2aproject/a2a-samples#206 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 13, 2026
multi-agent interactions Open

a2aproject/a2a-samples#207 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
python samples - host_agent detailed walkthrough Open

a2aproject/a2a-samples#210 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 13, 2026
a2a-samples python langgraph version error Open

a2aproject/a2a-samples#233 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
error while running sample/python/host/cli if use_push_notifications = True Open

a2aproject/a2a-samples#244 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 13, 2026
CrewAI Sample Failing Open

a2aproject/a2a-samples#267 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
How to support multiple A2AStarletteApplication instances or AgentExecutor implementations on a single IP:port? Open

a2aproject/a2a-samples#272 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
how to transfer chat history to remove agent? Open

a2aproject/a2a-samples#273 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Handling SSE (Server-Sent Events) Streaming Responses in A2A Protocol Communication Open

a2aproject/a2a-samples#274 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
bug: `_store_user_auth()` is never called after OAuth flow completes in `calendar_agent/adk_agent_executor.py` Open

a2aproject/a2a-samples#275 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
In python example a2a_mcp error in agent_executor.py when request to orchestrator agent: TypeError: 'SendStreamingMessageResponse' object is not subscriptable Open

a2aproject/a2a-samples#292 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 13, 2026
Update A2A/ADK Samples to 0.3.0 Open

a2aproject/a2a-samples#295 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
there is no import TaskCallback Open

a2aproject/a2a-samples#303 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Remote Agent Task Error: "Task was specified but does not exist" Open

a2aproject/a2a-samples#304 · 8 comments · 1 reaction · 0 assignees · Indexed Sep 13, 2026
langgraph Stream example is wrong Open

a2aproject/a2a-samples#309 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
TaskNotFoundError when 'multiagent' sample code sends non-null task_id to a remote agent running on a separate task store Open

a2aproject/a2a-samples#310 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 13, 2026
Push Notifications Agent Example Open

a2aproject/a2a-samples#328 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 13, 2026
demo/ui http://localhost:12000/agnets Sorry, there was an error. Please contact the developer. Open

a2aproject/a2a-samples#331 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 13, 2026
Task ID synchronization error: "Task was specified but does not exist" in airbnb_planner_multiagent Open

a2aproject/a2a-samples#333 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
[Bug]: No module named 'a2a.server' Open

a2aproject/a2a-samples#338 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 13, 2026
LiteLLM ignores GOOGLE_GENAI_USE_VERTEXAI=FALSE environment variable and defaults to Vertex AI Open

a2aproject/a2a-samples#334 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Push Notification is not receiving the processed output Open

a2aproject/a2a-samples#335 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Sample Code where an extended agent card is only returned when a user is actually authenticated Open

a2aproject/a2a-samples#340 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 13, 2026
A2A Client Timeout Error in Multi-Agent System Open

a2aproject/a2a-samples#346 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
"Try in Firebase Studio" button does not work (Can not create workspace) Open

a2aproject/a2a-samples#348 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 13, 2026
Support for long-running background after original `EventQueue` Open

a2aproject/a2a-samples#357 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Java sample: use message/stream for streaming + fix SSE parsing Open

a2aproject/a2a-samples#358 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Test fails for the samples of golang. Open

a2aproject/a2a-samples#360 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Could you please provide more examples related to identity authentication and authorization? Open

a2aproject/a2a-samples#361 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Try out the demo UI example failed due to Content Security Policy violation error Open

a2aproject/a2a-samples#363 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Add A2A on Agent Engine samples Open

a2aproject/a2a-samples#365 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Got a 404 error during the uv run of the a2a_mcp code sample Open

a2aproject/a2a-samples#372 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 13, 2026
A2A_MCP example execution Open

a2aproject/a2a-samples#378 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 13, 2026
a2a-samples/samples/java /custom_java_impl Open

a2aproject/a2a-samples#383 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
A2AClient is deprecated Open

a2aproject/a2a-samples#385 · 1 comment · 5 reactions · 0 assignees · Indexed Sep 13, 2026
Demo UI fails to run due to pypika build failure Open

a2aproject/a2a-samples#387 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
[Feat]: Samples for implementing RPC extension Open

a2aproject/a2a-samples#389 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Missing dependency and outdated README Open

a2aproject/a2a-samples#397 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
Bug: Outdated uv.lock files in samples reference older version of a2a-sdk Open

a2aproject/a2a-samples#399 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026
[Bug]: `AgentAuthentication` type is not defined in `a2a.types` but used in sample code Open

a2aproject/a2a-samples#409 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 13, 2026
Java A2A Agents cannot be accessed Using Python ADK RemoteA2aAgent Open

a2aproject/a2a-samples#402 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 13, 2026

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