memorymaster 4.3.0

Production-grade memory reliability system for AI coding agents. Lifecycle-managed claims with citations, conflict detection, steward governance, and MCP integration.

MemoryMaster

Production-grade memory reliability system for AI coding agents.

Lifecycle-managed claims with citations, conflict detection, steward governance, hybrid retrieval, and MCP integration. Give your AI agents persistent, trustworthy memory.

MemoryMaster prevents the #1 problem with agent memory: drift, stale assumptions, and unsafe disclosure. It gives Claude Code, Codex, and any MCP-compatible agent persistent, verifiable memory with a full claim lifecycle, citation tracking, conflict detection, and human-in-the-loop governance.

How it's different

Agent-memory systems (mem0, Letta/MemGPT, Zep, cognee) have largely converged on strong retrieval — hybrid search, temporal and graph reasoning, ontologies. MemoryMaster competes on a different axis: governance. The wedge is curation over accumulation — every memory is a lifecycle-managed claim (status, citations, decay, conflict arbitration), not an opaque embedding that lingers until overwritten. Tellingly, the market moved the other way: mem0's 2026 model is explicitly add-only with no conflict resolution — the opposite of a steward.

	mem0 / Letta / Zep	MemoryMaster
Unit of memory	text chunk / summary	claim with status, tier, citations, bitemporal validity
Stale / wrong facts	linger until overwritten	decay → stale, conflict detection, supersession
Contradictions	silently coexist	surfaced as conflicted, auto-resolved (5-tier) or queued for review
Provenance	usually none	citation per claim + per-agent provenance
Secret leakage	your problem	sensitivity filter at ingest (JWT/AWS/Bearer/SSH redaction)
Operator control	API only	steward governance + a dashboard you can see

If you want an agent that recalls more, any vector store works. If you want an agent that recalls correctly — and can prove where a fact came from and retire it when it goes stale — that's the gap MemoryMaster fills.

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Architecture

MemoryMaster is layered around MCP/CLI entry points, the MemoryService facade, SQLite/Postgres storage, optional Qdrant vector search, scheduled jobs, and the Obsidian wiki/vault layer. The canonical ingest path is:

MCP/CLI -> sensitivity filter -> MemoryService.ingest -> store write -> FTS5 index

The query path is:

query_memory -> MemoryService.query -> storage reads + optional Qdrant candidates -> ranked context

See docs/architecture.md for the current module map, data-flow details, recent PR status, and sensitivity-filter invariants.

Key features

• 6-state lifecycle: candidate → confirmed → stale → superseded → conflicted → archived
• Citation tracking with provenance for every claim
• Hybrid retrieval: vector (sentence-transformers / Gemini) + FTS5 + freshness + confidence
• Context optimizer: query_for_context(budget=4000) returns auto-curated memory that fits your token budget
• Entity graph with typed relationships and alias resolution
• Rule-shaped claims (new in v3.21.0): prescriptive when <trigger>, do <action> because <rationale> claims (ingest_rule / query_rules) — the shape an agent needs to actually change behaviour next time, not just recall a fact
• Correction mining (new in v3.21.0): mine-rules scans the verbatim transcript archive for user corrections and distills them into rule claims; the Stop hook also mines each session's latest correction automatically
• Versioned schema migrations (new in v3.20.0): migrate applies SQLite/Postgres migrations with sha256 drift detection; incremental export-delta ships small claim deltas for cheap cross-machine sync
• Retrieval quality (new in v3.22.0): floor-ratio boost gate (MEMORYMASTER_BOOST_FLOOR_RATIO) stops fresh-but-wrong claims outranking the true match; query --explain shows per-stage score attribution; an opt-in correctness-safe query cache (MEMORYMASTER_QUERY_CACHE) with a generation gate
• Semantic contradiction probe (new in v3.22.0, wired as a steward phase in v3.23.0): detect-contradictions finds claims that genuinely contradict each other (beyond the deterministic same-subject conflict check) via an LLM judge with a Wilson-CI rate and verdict cache; in v3.23 the same probe runs inside run-steward and emits paste-ready conflicted proposals
• Verbatim archive cleanup (new in v3.23.0): verbatim-cleanup dedups the raw-transcript table and optionally purges pre-#128 junk rows, with a dry-run default and FTS5 mirror sync
• Steward governance: multi-probe validators (filesystem, format, citation, semantic, tool) with proposal review
• Conflict resolution: 5-tier auto (confidence > freshness > citations > LLM > manual)
• Auto-redaction at ingest: JWT, GitHub tokens, Bearer, AWS keys, SSH keys, custom patterns
• LLM Wiki: compiled-truth + append-only timeline articles with progressive-disclosure frontmatter, explored: true|false operator-review marker, and inline > [!contradiction] Obsidian callouts
• Atlas Inbox V1 (new in v3.13.0): WhatsApp ingestion → source/evidence/action proposal lifecycle → Super-Productivity export. Versioned API/CLI contract for downstream consumers (LifeAgent, etc.) — see docs/atlas-api-contract-v1.md. Real provider adapters (OpenAIWhisperTranscriptionProvider, TesseractOcrProvider) behind Protocols; mock providers stay default.
• Optional local-path resolution (new in v4.1.0): resolve-project / local-search (CLI + MCP) turn a fuzzy project/file name into its real on-disk path and cache it as a recallable reference claim. Most useful for agents without strong native file search (e.g. Codex on Windows) and for cross-session "where was project X?" — for clients that already have a good file-glob this is marginal. Backed by Everything's read-only ES.exe CLI via a backend-agnostic LocalSearchProvider Protocol (memorymaster/bridges/local_search/; plocate/fd/mdfind can drop in later). Requires Everything + the ES CLI with MEMORYMASTER_EVERYTHING_ES_PATH set; degrades to a no-op when absent. Paths are redacted to root-relative tokens so usernames/structure are never stored.
• LLM typed-entity Atlas extractor (new in v4.1.0): turns ingested evidence (WhatsApp / email / notes) into typed, cited life-knowledge claims (person/project/commitment/decision/event/…) via an LLM with strict subject/type validation — replacing the deterministic keyword matcher. The subject is always the real named entity, never the source app.
• Bitemporal write-time guard (new in v4.2.0): rejects malformed ISO-8601 and inverted valid_until < valid_from at ingest, so a durable-but-invisible claim can never be written.
• archive_by_source + checkpoint (new in v4.2.0): lifecycle-safe bulk source cleanup (archive, never hard-delete; dry-run default) and one-round-trip batch ingest through the same sensitivity filter.
• Intent-aware ranking (new in v4.2.0, opt-in): retrieval_profile="auto" routes query intent to a weight profile; RRF fusion (MEMORYMASTER_RECALL_FUSION) is available but linear stays default after A/B measurement.
• Usage telemetry (new in v4.2.0): per-agent recall counters + a get_usage_rollup MCP tool.
• Guarded fuzzy entity resolver (new in v4.2.0, opt-in MEMORYMASTER_ENTITY_FUZZY_RESOLVE): refuses ambiguous alias matches (anti-hallucination) instead of fragmenting entities.
• Hebbian/Ebbinghaus entity edges (new in v4.2.0, opt-in MEMORYMASTER_HEBBIAN_DECAY): usage strengthens, time decays entity-graph edge weights.
• Proactive + tool-triggered recall (new in v4.2.0): a volunteer_context MCP tool (confidence-gated, zero-LLM) and an opt-in PreToolUse hook (MEMORYMASTER_PRETOOLUSE_RECALL) that injects memory as additionalContext on Grep/Glob.
• Belief holder (new in v4.2.0): nullable per-claim holder for multi-holder beliefs (take/fact/bet/hunch reuse claim_type); SQLite+Postgres, ranking-neutral by default.
• Dual backend: SQLite (zero-config) and Postgres (full feature parity with pgvector)
• Dream Bridge for bidirectional sync with Claude Code's Auto Dream
• Hook stack: recall, classify, validate-wiki, session-start, auto-ingest, precompact (settings.json) + steward-cycle (cron/schtasks) + opt-in --pretooluse grep/glob recall-inject

Full feature index lives in docs/handbook.md.

Benchmarks

LongMemEval-S (N=500, retrieval-only) — v3.15.0 now leads the publicly-reported numbers from agentmemory on R@5 and MRR, after wiring sentence-transformers/all-MiniLM-L6-v2 into the bench harness (the v3.14 baseline was unintentionally BM25-only).

Metric	v3.14.0	v3.15.0	agentmemory	Δ vs agentmemory
Recall@5	0.894	0.966	0.952	+0.014 ★
Recall@10	0.942	0.984	0.986	-0.002
MRR	0.799	0.902	0.882	+0.020 ★

Reproduce: python tests/bench_longmemeval.py --retrieval-only. Full methodology, experiment-by-experiment deltas (1 KEEP, 2 REVERT, 3 NULL), and the architectural findings that surfaced along the way live in docs/archive/longmemeval-results.md and docs/archive/v315-experiments/. QA-accuracy pass (with judge) is deferred until provider quotas allow.

Prerequisites

Required (the package won't function without these)

• Python 3.10+ with pip
• Claude Code, Codex, or any MCP-compatible agent
• An LLM provider — pick one: Claude Code OAuth (free if you're a subscriber, set MEMORYMASTER_LLM_PROVIDER=claude_cli), a free Gemini API key from aistudio.google.com, OpenAI, Anthropic API, or local Ollama. The steward, auto-ingest, and wiki-absorb cycles all need an LLM — without one, claims pile up as candidate and never get validated, deduped, or compiled into the wiki.

Strongly recommended (you'll lose ~80% of the value without these)

• Node.js 18+ for graphify and GitNexus — these are the cached intelligence layers that make MemoryMaster cheap to query. Without them, every "what does this codebase do?" question burns tokens cold-exploring files the graph already mapped. The intelligence-first workflow in CLAUDE.md assumes both are installed.
• Obsidian 1.6+ with the Bases core plugin — the wiki engine writes plain Markdown so any editor works, but Obsidian's backlinks, graph view, and Bases dashboards are how you actually navigate wiki-absorb output. Without Obsidian, the wiki is just a folder of files.

Optional (nice to have)

• Docker for Qdrant — vector retrieval. SQLite FTS5 is the default and works out of the box; add Qdrant when you want semantic recall on top of keyword search.

30-second quickstart

1. Install

pip install "memorymaster[mcp,security,qdrant,embeddings]"

2. Let your agent do the rest

Paste the contents of docs/AGENT-INSTALL.md into Claude Code or Codex. The agent will:

• run memorymaster-setup --yes --full-stack --json (detects your environment, wires hooks + MCP, starts Qdrant + Ollama if Docker is present, or falls back to SQLite-only mode gracefully)
• report what was wired, what was reused (brownfield), and what degraded
• run memorymaster-setup --verify-only and show the round-trip result

3. Restart your session

Hooks and MCP load on session start. Restart Claude Code / Codex once.

4. Verify

After restart, run in your agent:

query_memory("test")

You should get a recall response from the MCP server. Done.

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For manual setup, advanced flags (--provider, --db, --no-cron, --no-full-stack, --verify-only, --json, and more), Docker, Helm, and Postgres, see INSTALLATION.md.

Pick your LLM provider

Provider	Env vars	Default model	Cost
Claude Code OAuth (recommended for subscribers)	MEMORYMASTER_LLM_PROVIDER=claude_cli (requires claude CLI on PATH)	claude-haiku-4-5-20251001	included in Claude Code plan
Google Gemini (default)	MEMORYMASTER_LLM_PROVIDER=google + GEMINI_API_KEY=...	gemini-3.1-flash-lite-preview	~free
OpenAI	MEMORYMASTER_LLM_PROVIDER=openai + OPENAI_API_KEY=...	gpt-4o-mini	~$0.001/call
Anthropic API	MEMORYMASTER_LLM_PROVIDER=anthropic + ANTHROPIC_API_KEY=...	claude-haiku-4-5-20251001	~$0.001/call
Ollama (local)	MEMORYMASTER_LLM_PROVIDER=ollama + OLLAMA_URL=http://localhost:11434	llama3.2:3b	free

The claude_cli provider shells out to your local claude --print binary, so it inherits the OAuth session you're already logged into in Claude Code — no API key, no rotator, no quota juggling. Caveat: cold-start adds 3-15s per call (subprocess spawn), so it's ideal for batched/cron paths (steward, wiki-absorb) and not for latency-sensitive recall. Override with MEMORYMASTER_CLAUDE_CLI_BIN and MEMORYMASTER_CLAUDE_CLI_TIMEOUT. On VM installs the OAuth token expires ~24h, so pair with MEMORYMASTER_LLM_FALLBACK_PROVIDER=ollama; desktop tokens don't expire.

For zero-cost offline use, install Ollama, ollama pull llama3.2:3b, and set MEMORYMASTER_LLM_PROVIDER=ollama.

MCP server

{
  "mcpServers": {
    "memorymaster": {
      "command": "memorymaster-mcp",
      "env": {
        "MEMORYMASTER_DEFAULT_DB": "/path/to/memorymaster.db",
        "MEMORYMASTER_WORKSPACE": "/path/to/your/project"
      }
    }
  }
}

30 MCP tools spanning setup/lifecycle, ingest, query/retrieval, listing, knowledge graph, and governance: init_db, ingest_claim, ingest_rule, query_rules, rules_export, run_cycle, run_steward, classify_query, query_memory, query_for_context, query_for_task, query_claim_paths, query_meta_decisions, federated_query, recall_analysis, read_active_tasks, list_claims, redact_claim_payload, pin_claim, compact_memory, list_events, search_verbatim, open_dashboard, list_steward_proposals, resolve_steward_proposal, extract_entities, entity_stats, find_related_claims, quality_scores, recompute_tiers.

See docs/MCP-TOOLS.md for the grouped reference (one line per tool), and .mcp.json.example for the full config template.

Backends

Backend	Install	Use case
SQLite	Built-in	Local development, single-agent, zero-config
Postgres	pip install "memorymaster[postgres]"	Team deployment, multi-agent, pgvector search

Docker Compose

Run the full stack (MemoryMaster + Qdrant + Ollama) with one command:

docker compose up -d

See INSTALLATION.md for Kubernetes / Helm.

Development

# Install with dev dependencies
pip install -e ".[dev,mcp,security,embeddings,qdrant]"

# Run tests
pytest tests/ -q

# Lint and format
ruff check memorymaster/ && ruff format memorymaster/

# Performance benchmarks
python benchmarks/perf_smoke.py

See CONTRIBUTING.md for the full workflow.

Documentation

Document	Description
docs/README.md	Documentation index — where to find each living doc
docs/handbook.md	Full operator handbook — hooks, dashboard, steward, dream bridge, troubleshooting, one-prompt install
docs/MCP-TOOLS.md	Reference for all 30 MCP tools, grouped by purpose
docs/INTEGRATING.md	Integration guide for embedding MemoryMaster in your agent
INSTALLATION.md	Setup guide: pip, Docker, Helm, MCP config
CONTRIBUTING.md	Dev setup, testing, PR workflow
ARCHITECTURE.md	System design and subsystem details
USER_GUIDE.md	Usage, MCP integration, troubleshooting
CHANGELOG.md	Version history and release notes
ROADMAP.md	Release plan and future tracks
docs/enabling-v2-systems.md	v3 statistical classifier + cadence policy opt-in

License

MIT — Built by wolverin0