v0.3.1 specification snapshot

v0.3.1 keeps the v0.3.0 Agent Task model and adds explicit A2A peer-task alignment for remote channels and task delegation.

Required clarifications over v0.3.0

A compatible v0.3.1 implementation SHOULD preserve:

• A local task_id even when the delegated peer returns an A2A taskId.
• A remote_task_ref with peer-native ids such as A2A taskId and contextId.
• native_protocol and native_status fields for peer protocols before local normalization.
• Agent Card references as capability snapshots or routing inputs, not as runtime ownership records.
• A2A messages as input, clarification, task interaction, or status events rather than durable outputs.
• A2A artifacts as artifact refs linked through task graph edges.
• Streaming, subscribe, or push notification delivery as channel, task progress, artifact, cursor, ack, and snapshot repair facts.
• In-task authorization as action and permission bridge facts.

Key contracts

• Remote channels
• Agent task
• Ecosystem boundaries
• Research sources
• Specification