Caveat verdict

a2a-server

openclaw-a2a-server

88
🟢 Trusted
No high-risk patterns surfaced by the deep scan — automated capability review, not behavioral proof.

The skill runs an A2A inbound task listener, which seems to be a legitimate functionality for receiving tasks from other agents via the A2A API Gateway.

⚠ Flagged for review — coarse, uncorroborated signal, not a confirmed exploit. Review the config yourself before installing.

Automated static analysis — not a human review. Caveat flags capabilities, not confirmed intent, and can produce false positives. Disagree with this verdict? Use Dispute below.

55
security
90
transparency
70
maintenance

Findings (5)

Pattern match high

Possible hardcoded credential

start.sh · prose · downgraded · API_KEY="${A2A_GATEWAY_API_KEY:-}

Pattern match medium

subprocess execution — runs system commands from Python

a2a-listener.py · prose · downgraded · subprocess.run(

Pattern match medium

subprocess with shell=True — command injection vector

a2a-listener.py · prose · downgraded · subprocess.run( cmd, shell=True

Pattern match low

Python os.environ.get — reads environment variable

a2a-listener.py · prose · downgraded · os.environ.get(

Pattern match low

Python urllib.request — network access

a2a-listener.py · prose · downgraded · urllib.request

Why the tier is capped

Execution sink present in raw bytes (Hard Floor: class B/D). Final tier capped at Caution — cannot be lifted by any downgrade, example-payload opt-in, or allowlist.

Permissions & capabilities

No declared permissions — minimal attack surface.

network_in

Is this flag fair?

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