Unverified50% confidenceFactExact time
The A2A protocol defines the Agent Card, a JSON-RPC-based task lifecycle, streaming updates, and multimodal message-passing mechanisms.
1
Sources
50%
Confidence
Long-term
Relevance
10/26/2026
First Seen
Sources
Related Entities
Related Claims
Unverifiedfeishu-claude-bridge's real-time streaming output is achieved by continuously refreshing the content of the same card via the dynamic update API of Feishu's Interactive Card.63% similarUnverifiedThe second agent used the A2A protocol to read Dexto's agent card, encapsulated the purchase action as a task with an x402 payment attached, and paid 10 cents in USDC on the Base chain.59% similarUnverifiedAI agent payment authorization can also be granted temporary permission to call payment APIs via the OAuth protocol, rather than directly sharing card numbers.57% similarUnverifiedA2A 1.0 added multi-tenancy, protocol negotiation, and signed Agent cards at release.56% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1100924API
curl https://kongchang.com/api/v1/knowledge/claims/1100924MCP
get_claim(id=1100924)