security(a2a): A2ABreak harden + card-review + docs - #11
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Superagentic-AI wants to merge 3 commits into
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Superagentic-AI wants to merge 3 commits into
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Isolate anonymous callers on the public catalogue so ListTasks/GetTask cannot leak other clients' histories, ignore client-supplied contextId on new tasks, and extend agent-card-review with unattested-skill and JWS trust warnings. Document A2ABreak protocol risks in SECURITY and the conformance guide.
Unblocks Ruff/CI format --check on the A2ABreak harden branch.
Main CI does not install the a2a extra, so create_public_app raised ImportError and failed the new A2ABreak isolation tests. Skip like the existing public-endpoint tests when FastAPI is absent.
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Summary
isolate_callers=Truebinds tasks to an opaque per-caller key (cookiesox_a2a_calleror headerX-SuperOptiX-Caller-Key), ignores client-suppliedcontextIdon new tasks, and scopes List/Get/Cancel/Subscribe to that caller.agent-card-reviewwith A2ABreak-aware warnings for unattested skill claims and for JWS proving publisher identity rather than capability.SECURITY.mdanddocs/guides/a2a-conformance.md(arXiv:2609.10871). Push notifications remain disabled.Test plan
uv run pytest tests/test_a2a_public_endpoint.py tests/test_a2a_conformance.py -qruff checkon changed Python filesGET /tasksis caller-scoped and clientcontextIdis not honoured on new tasks