Specification v0.1

Changelog

Versions of the A2M specification.

v0.1 (draft), 2026-11-11

First public draft.

Five objects: Intent, Mandate, Decision, ExecutionReport, Evidence.
Decision payload version 2 (time_in_force and enforcement are signed). Version 1 payloads are still accepted until they expire.
Order state machine with an explicit unknown state resolved only by reconciliation.
Error codes for rule rejections and for transport errors.
Venue adapter contract.
MCP binding with seven tools, and OAuth discovery through protected-resource metadata.