mneme-hq 0.9.0

Decision MCP transport, decision authority CLI, and the first published decision proposal surface.

This release publishes the MCP and decision workflow work since v0.8.0. Retrieval ranking, DecisionRetriever, ConflictDetector, typed-rule enforcement semantics, path applicability, and the frozen benchmark behavior are unchanged; mneme.audit/v1 is unchanged.

Added

• mneme decision-mcp — serve the Decision Index MCP tools over local stdio: the frozen six-tool surface decision.propose, decision.propose_batch, decision.get, decision.search, decision.applicable_to, decision.trace. The MCP tool list is part of the ADR-027 authority boundary: proposals are non-authoritative, no MCP tool can accept, reject, activate, or supersede anything, and forbidden authority fields in proposal input fail closed with a validation error. Requires the mcp extra (pip install "mneme-hq[mcp]").
• mneme decision — decision proposal inspection and explicit human authority actions (proposals | show | accept | reject), a thin adapter over the Core DecisionAuthorityService. Acceptance materializes a canonical decision; it never activates protection or runs the Audit.
• Decision proposal foundation — proposal records, stores, and provenance; proposals stay non-authoritative until accepted through the human authority CLI.
• OSS Decision Index kernel parity boundary (ADR-023 D0 proof) — canonical decision index and consumer reads.

Documentation

• ADR-027 accepted — Decision MCP proposal-ingestion and authority boundary.
• ADR-023 accepted after the D0 parity proof.

Compatibility

• No changes to retrieval ranking, DecisionRetriever, ConflictDetector, existing typed-rule semantics, or the frozen enforcement benchmark.
• mneme.audit/v1 unchanged.
• New optional dependency group mcp (mcp>=2.2.0,<3) — required only for mneme decision-mcp.

Install

:::bash
pipx install "mneme-hq==0.9.0"