State Memory MCP

@putervision/state-memory-mcp

@putervision/state-memory-mcp is a zero-infrastructure, deterministic Model Context Protocol (MCP) server that provides AI coding assistants (such as Cursor, Claude Code, Gemini, or Copilot) with a structured, persistent SQLite graph for tracking workflow state—tasks, decisions, artifacts, plans, blockers, and their semantic relationships.

🌐 Official Documentation & Website: statememorymcp.com

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⚡ Quick Start & Installation

Prerequisites: Node.js >= 18.18.0

# 1. Install globally
npm install -g @putervision/state-memory-mcp

# 2. Navigate to your project directory
cd your-project

# 3. Initialize state-memory-mcp
# Creates .state-memory-mcp/, updates .gitignore, registers project,
# and scaffolds IDE instructions and MCP configs for Cursor, Claude, VS Code, Windsurf, etc.
state-memory-mcp init

# Done! Restart your IDE or Agent Manager to activate.

Alternative Options

# Run directly via binary (after global install)
state-memory-mcp run

# Re-initialize across all registered workspace projects
state-memory-mcp init-global

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🌟 Key Highlights

• 🧠 Deterministic State Memory & Compact TaskSlices: Zero LLM in the loop for memory operations; fast, deterministic SQLite graph traversals, and sub-1KB TaskSlice extraction for System 1 fast path evaluation.
• ⚡ 13 Production-Grade Consolidated MCP Tools: Full CRUD, relationship linking, DAG cycle checks, FTS5 search, TF-IDF RAG, time-travel history rollback, Spec-Driven Development, and auto-healing validation.
• 📉 Efficient Context Management & Decision Thresholding: Offloads context to a local SQLite database, filters sub-0.70 routine decisions to append-only event logs to prevent graph bloat, and preserves high-significance turns.
• 🚀 67%–74% Latency Reduction: Eliminates multi-step file scanning loops; agents retrieve unblocked tasks and blockers in milliseconds.
• 🤝 Multi-Agent Blackboard: Shared Context Store allowing parallel subagents to publish decisions, tasks, and blocker updates safely.
• 🎨 Interactive 3D Visualizer: Browser-based dark-mode 3D WebGL force-directed graph visualizer (state-memory-mcp view).
• 🔗 Dual-MCP Synergy: Pair with @putervision/vision-memory-mcp for visual state caching, perceptual hashing, and cryptographic multimodal evidence packs.
• 🛡️ 100% Local & Private: Local-first architecture; all state stays inside .state-memory-mcp/ in your workspace.

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🛠️ MCP Tool Suite

@putervision/state-memory-mcp provides 13 production-grade consolidated MCP tools organized across 5 core workflow domains:

• Graph & Relationships: manage_nodes (node CRUD, FTS5/TF-IDF vector search, atomic batch mutations, observation notes, thresholded fast decision logging), manage_edges (typed DAG links, multimodal visual state linking).
• Task Execution & Work Queue: manage_tasks (topological dependency queue, blocker detection, task completion with artifacts, auto-prune), manage_sessions (agent attribution, turn tracking, context bootstrap).
• Spec-Driven Development (SDD): manage_specs (PRD/RFC parsing, requirement-to-task decomposition, live acceptance criteria verification, compliance scoring).
• Analytics, Audit & Diagnostics: get_analytics (velocity, burndown, token ROI, cognitive load, critical path), get_events (SHA-256 tamper-evident event ledger), run_diagnostics (DAG validation, health checks, AST reference integrity).
• Data, Snapshots & Multi-Agent: manage_snapshots (checkpoints, time-travel undo), manage_database (backups, checksum audits, VCS branch merge), manage_data (bulk import/export, ML trajectories with interleaved fast decision events), query_graph (subgraphs, dependency tracing, raw SQL, sub-1KB compact_slice), use_blackboard (multi-agent asynchronous topic board).

👉 For complete parameter specifications, return schemas, and example payloads, see the Tools Reference Guide and Formal API Reference.

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🚀 Architecture & State Graph Lifecycle

                      AI Agent Prompt / Task
                                │
                                ▼
               ┌─────────────────────────────────┐
               │  Agent Session Attribution       │ ──▶ manage_sessions(action: "start")
               └────────────────┬────────────────┘
                                │
                                ▼
               ┌─────────────────────────────────┐
               │  Context & Task Prioritization   │ ──▶ get_analytics(action: "summary")
               │                                 │ ──▶ manage_tasks(action: "next")
               └────────────────┬────────────────┘
                                │
                                ▼
               ┌─────────────────────────────────┐
               │  Deterministic Graph Mutation   │ ──▶ manage_nodes(action: "create"|"update")
               │  (Tasks, Decisions, Blockers)   │ ──▶ manage_edges(action: "add"|"link_visual")
               └────────────────┬────────────────┘
                                │
                                ▼
               ┌─────────────────────────────────┐
               │  Spec & Integrity Verification  │ ──▶ manage_specs(action: "compliance"|"verify")
               │                                 │ ──▶ run_diagnostics(action: "validate")
               └────────────────┬────────────────┘
                                │
                                ▼
               ┌─────────────────────────────────┐
               │  Persistent SQLite Storage      │ ──▶ .state-memory-mcp/graph.db (WAL mode)
               │  Append-Only Event Ledger       │ ──▶ SHA-256 Cryptographic Audit Chain
               └─────────────────────────────────┘

📚 Documentation Directory

Explore dedicated guides and deep dives in the docs/ directory:

Guide	Description
🏗️ Architecture & Codebase Distillation	High-signal architectural overview, module inventory, data flows, and design decisions.
🚀 v0.10 → v1.0 Migration Guide	Step-by-step migration guide, legacy tool mapping table, and STATE_MEMORY_COMPAT mode.
💡 Value Proposition & Theory	Cognitive Externalization, FSM Formalism, First-Hop Determinism & Benchmark metrics.
📋 State Memory Concepts	Node Types (task, decision, blocker...), Status Values, Typed Edges & Seeding Guidelines.
⚙️ Configuration & IDE Setup	Auto-Initialization details, Environment Variables table, and Editor Configs (Cursor, VS Code, Claude, Antigravity, Windsurf).
🛠️ CLI Command Reference	CLI flags (init, run, view, inspect, metrics, audit, doctor, backup, restore, merge) & Git Scanner.
⏱️ Sessions, Snapshots & SDD	Session Lifecycle, Event Audit Trail, Snapshots, Trajectories, Sub-directory support & Spec-Driven Development.
🧰 Tools, Resources & Prompts	Complete reference for all 13 Consolidated MCP Tools, read-only state-memory:/// Resources, and Prompt templates.
📘 Formal API Reference	Formal parameters, return schemas, and code signatures for all MCP endpoints.
🎨 3D Visualizer Guide	Viewing and exporting the interactive WebGL 3D Force-Directed Graph visualizer.
🗄️ Database Schema	SQLite tables, columns, indexes, and schema migration history.

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📖 Agent Playbook: 5-Step Canonical Workflow

When an autonomous AI agent enters a repository with state-memory-mcp:

1. Orient & Bootstrap ──▶ manage_sessions(action: "start") + get_analytics(action: "summary")
2. Task Selection     ──▶ manage_tasks(action: "next") + manage_tasks(action: "find_blockers")
3. Trace Context      ──▶ query_graph(action: "trace") + manage_specs(action: "compliance")
4. Execute & Record   ──▶ manage_nodes(action: "create", type: "decision") + manage_edges(action: "link_visual")
5. Validate & Close   ──▶ run_diagnostics(action: "validate") + manage_tasks(action: "complete") + manage_sessions(action: "end")

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🧪 Testing

# Run full unit, integration, and performance benchmark test suite across all 113 test files (418 tests)
npm run test

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⚖️ License & Disclaimers

Developed and maintained by PuterVision. Released under the MIT License.

• Local Storage Guarantee: All graph data, decision records, and event logs remain 100% local in your workspace. No telemetry or project data is ever transmitted.
• Trademarks & Non-Affiliation: Product names (Cursor, Claude Code, Gemini, Windsurf, VS Code, GitHub, SQLite) are property of their respective owners and used solely for compatibility identification.