Unverified50% confidenceFactExact time
Starting with A2A v0.3, the Agent Card can carry a JWS cryptographic signature, allowing the recipient to verify that the card has not been tampered with and indeed comes from the claimed provider. But signatures address identity, not performance quality or content authenticity.
1
Sources
50%
Confidence
Long-term
Relevance
10/15/2026
First Seen
Sources
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