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[Bug]: Metadata key 'X-A2A-Extensions' is invalid: INTERNAL: Illegal header key ( gRPC metadata key X-A2A-Extensions is invalid )

Status: Open.

Bug

#656 In a2aproject/a2a-python;

· BunnkeiKou opened on Feb 1, 2026

[Bug]: Tests are failing on 1.0-dev

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#652 In a2aproject/a2a-python;

· ishymko opened on Jan 30, 2026

[Feat]: allow async extended card modifier

component: serverIssues related to frameworks for agent execution, HTTP/event handling, database persistence logic.Issues related to frameworks for agent execution, HTTP/event handling, database persistence logic.

help wantedExtra attention is neededExtra attention is needed

status:awaiting response

Status: Open.

Feature

#647 In a2aproject/a2a-python;

· cbugwadia32 opened on Jan 27, 2026

Question About Message support for SSE and implementation of seprator input

component: serverIssues related to frameworks for agent execution, HTTP/event handling, database persistence logic.Issues related to frameworks for agent execution, HTTP/event handling, database persistence logic.

status:awaiting response

Status: Open.

Bug

#643 In a2aproject/a2a-python;

· amorfatianima opened on Jan 25, 2026

[Task]: Run TCK tests in CI

Status: Open.

Task

#639 In a2aproject/a2a-python;

· ishymko opened on Jan 21, 2026

refactor!: JSON-RPC SendMessageRequest method handling

Status: Open.

Task

#627 In a2aproject/a2a-python;

· muscariello opened on Jan 19, 2026

[Bug]: A2ARESTFastAPIApplication omits state field from task status when task is rejected

component: serverIssues related to frameworks for agent execution, HTTP/event handling, database persistence logic.Issues related to frameworks for agent execution, HTTP/event handling, database persistence logic.

status:awaiting response

Status: Open.

Bug

#625 In a2aproject/a2a-python;

· benedict-khoo-sap opened on Jan 19, 2026

[Feat]: Feature Request: Allow custom extensions / metadata in AgentCard + richer structured response parts in Host → Agent communication

component: coreIssues related to base data models, auth, gRPC interfaces, observability, and fundamental utilities.Issues related to base data models, auth, gRPC interfaces, observability, and fundamental utilities.

status:awaiting response

Status: Open.

Feature

#616 In a2aproject/a2a-python;

· AnkurKumarShukla opened on Jan 13, 2026

[Bug]: AgentCard securitySchemes APIKeySecurityScheme serializes in_ instead of in causing validation failure

component: coreIssues related to base data models, auth, gRPC interfaces, observability, and fundamental utilities.Issues related to base data models, auth, gRPC interfaces, observability, and fundamental utilities.

status:awaiting response

Status: Open.

Bug

#615 In a2aproject/a2a-python;

· AnkurKumarShukla opened on Jan 13, 2026

[Feat]: Resource Scoping

Status: Open.

Feature

#610 In a2aproject/a2a-python;

· sokoliva opened on Jan 7, 2026

[Bug]: DefaultRequestHandler hangs on_message_send for consumer failures

Status: Open.

Bug

#609 In a2aproject/a2a-python;

· vinoo999 opened on Jan 6, 2026

[Feat]: PushNotificationConfig.authentication is ignored; no Authorization header is sent in push notifications

Status: Open.

Feature

#585 In a2aproject/a2a-python;

· Tareqox opened on Dec 11, 2025