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@jmesnil jmesnil commented Jan 22, 2026

based on commit a2aproject/A2A@0572953

spec-grpc module has been regenerated from the updated a2a.proto

Key changes:

  • Agent card
    • extendedAgentCard is not specified by capabilities (instead of supportsExtendedAgentCard field)
    • protocolVersions is a list (instead of a single protocolVersion)
  • SendMessage
    • msg field is now named message
  • ListTask
    • timestamp is now named statusTimestampAfter instead of lastUpdatedAfter
  • OAuthFlows
    • deviceCode has been added, implicit & password have been removed
  • AuthorizationCodeOAuthFlow
    • new pkce_required boolean field

@jmesnil jmesnil added this to the 1.0.0 milestone Jan 22, 2026
based on commit a2aproject/A2A@0572953

spec-grpc module has been regenerated from the updated a2a.proto

Key changes:

* Agent card
  * extendedAgentCard is not specified by capabilities (instead of `supportsExtendedAgentCard` field)
  * protocolVersions is a list (instead of a single `protocolVersion`)
* SendMessage
  * `msg` field is now named `message`
* ListTask
  * timestamp is now named statusTimestampAfter instead of `lastUpdatedAfter`
* OAuthFlows
  * `deviceCode` has been added, `implicit` & `password` have been removed
* AuthorizationCodeOAuthFlow
  * new `pkce_required` boolean field

Signed-off-by: Jeff Mesnil <jmesnil@ibm.com>
@jmesnil jmesnil force-pushed the update_a2a.proto_0572953 branch from aef135b to 48d5744 Compare January 22, 2026 15:09
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@jmesnil jmesnil force-pushed the update_a2a.proto_0572953 branch from cf97f38 to 87e1038 Compare January 22, 2026 17:19
Signed-off-by: Jeff Mesnil <jmesnil@ibm.com>
@jmesnil jmesnil force-pushed the update_a2a.proto_0572953 branch from 87e1038 to 78a5656 Compare January 22, 2026 17:33
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2 participants