macp-runtime 0.8.0

MACP reference runtime: a coordination kernel and gRPC server enforcing session boundaries, message validation, append-only history, modes, and governance policy.
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{
  "_comment": "Pins 'plurality' end to end: the schema_version 3 empty-tally denial, the tie-fails rule (previously unfixtured anywhere in the corpus), and the passing case. 'plurality' takes no threshold, so the empty tally and the tie are the same failure -- zero approvals are not strictly more than zero rejections (RFC-MACP-0012 4.1).",
  "description": "Decision Mode: 'plurality' denies the empty tally and a tie, and passes on a strict plurality.",
  "mode": "macp.mode.decision.v1",
  "initiator": "agent://orchestrator",
  "participants": [
    "agent://orchestrator",
    "agent://a",
    "agent://b"
  ],
  "mode_version": "1.0.0",
  "configuration_version": "cfg-1",
  "policy": {
    "policy_id": "policy.decision.plurality-v3",
    "mode": "macp.mode.decision.v1",
    "schema_version": 3,
    "description": "Plurality vote, initiator-only commitment, schema_version 3 fail-closed empty-tally semantics.",
    "rules": {
      "voting": {
        "algorithm": "plurality"
      },
      "commitment": {
        "authority": "initiator_only"
      }
    }
  },
  "policy_version": "policy.decision.plurality-v3",
  "ttl_ms": 60000,
  "messages": [
    {
      "sender": "agent://orchestrator",
      "message_type": "Proposal",
      "payload_type": "macp.modes.decision.v1.ProposalPayload",
      "payload": {
        "proposal_id": "p1",
        "option": "deploy",
        "rationale": "ready",
        "supporting_data": []
      },
      "expect": "accept"
    },
    {
      "_comment": "schema_version 3, empty tally. 'plurality' needs no special case: zero approvals against zero rejections is a tie, and a tie fails (RFC-MACP-0012 4.1).",
      "sender": "agent://orchestrator",
      "message_type": "Commitment",
      "payload_type": "macp.v1.CommitmentPayload",
      "payload": {
        "commitment_id": "c0",
        "outcome_positive": true,
        "action": "decision.selected",
        "authority_scope": "test",
        "reason": "positive commitment attempted on an empty decisive tally",
        "mode_version": "1.0.0",
        "policy_version": "policy.decision.plurality-v3",
        "configuration_version": "cfg-1"
      },
      "expect": "reject",
      "expected_error_code": "POLICY_DENIED"
    },
    {
      "sender": "agent://a",
      "message_type": "Vote",
      "payload_type": "macp.modes.decision.v1.VotePayload",
      "payload": {
        "proposal_id": "p1",
        "vote": "APPROVE",
        "reason": "ship it"
      },
      "expect": "accept"
    },
    {
      "sender": "agent://b",
      "message_type": "Vote",
      "payload_type": "macp.modes.decision.v1.VotePayload",
      "payload": {
        "proposal_id": "p1",
        "vote": "REJECT",
        "reason": "regression risk"
      },
      "expect": "accept"
    },
    {
      "_comment": "'plurality' requires strictly MORE approvals than rejections. 1 approve against 1 reject is a tie and fails. This tie-fails rule was previously unfixtured.",
      "sender": "agent://orchestrator",
      "message_type": "Commitment",
      "payload_type": "macp.v1.CommitmentPayload",
      "payload": {
        "commitment_id": "c1",
        "outcome_positive": true,
        "action": "decision.selected",
        "authority_scope": "test",
        "reason": "positive commitment attempted at a 1-1 tie",
        "mode_version": "1.0.0",
        "policy_version": "policy.decision.plurality-v3",
        "configuration_version": "cfg-1"
      },
      "expect": "reject",
      "expected_error_code": "POLICY_DENIED"
    },
    {
      "sender": "agent://orchestrator",
      "message_type": "Vote",
      "payload_type": "macp.modes.decision.v1.VotePayload",
      "payload": {
        "proposal_id": "p1",
        "vote": "APPROVE",
        "reason": "confirmed"
      },
      "expect": "accept"
    },
    {
      "sender": "agent://orchestrator",
      "message_type": "Commitment",
      "payload_type": "macp.v1.CommitmentPayload",
      "payload": {
        "commitment_id": "c2",
        "outcome_positive": true,
        "action": "decision.selected",
        "authority_scope": "test",
        "reason": "plurality reached: 2 approvals against 1 rejection",
        "mode_version": "1.0.0",
        "policy_version": "policy.decision.plurality-v3",
        "configuration_version": "cfg-1"
      },
      "expect": "accept"
    }
  ],
  "expected_final_state": "Resolved",
  "expect_resolution_present": true,
  "expected_resolution": {
    "action": "decision.selected",
    "mode_version": "1.0.0",
    "configuration_version": "cfg-1",
    "outcome_positive": true
  },
  "expected_mode_state": {
    "phase": "Committed",
    "proposals": {
      "p1": {
        "proposal_id": "p1",
        "sender": "agent://orchestrator"
      }
    },
    "votes": {
      "p1": {
        "agent://a": {
          "vote": "APPROVE"
        },
        "agent://b": {
          "vote": "REJECT"
        },
        "agent://orchestrator": {
          "vote": "APPROVE"
        }
      }
    }
  }
}