Alex Newman
12459eab3b
This commit brings all documentation up to date with the current v5.1.2 codebase, addressing 12+ critical discrepancies and adding 2 major new documentation files. ## Files Modified (18 documentation files): ### Root Documentation: - README.md: Updated version badge (4.3.1 → 5.1.2), tool count (7 → 9), added viewer UI and theme toggle features, updated "What's New" section - CHANGELOG.md: Added 8 missing releases (v4.3.2 through v5.1.2) with comprehensive release notes - CLAUDE.md: Removed hardcoded personal paths, documented all 14 worker endpoints (was 8), added Chroma integration overview, updated v5.x releases ### Mintlify Documentation (docs/): - introduction.mdx: Updated search tool count to 9, added viewer UI and theme toggle to features - configuration.mdx: Added smart-install.js documentation, clarified data directory locations, added CLAUDE_CODE_PATH env var, explained observations vs sessions, updated hook configuration examples - development.mdx: Added comprehensive viewer UI development section (103 lines), updated build output filenames (search-server.mjs) - usage/search-tools.mdx: Added get_context_timeline and get_timeline_by_query documentation with examples, updated tool count to 9 - architecture/overview.mdx: Updated to 7 hook files, 9 search tools, added Chroma to tech stack, enhanced component details with viewer UI - architecture/hooks.mdx: Added smart-install.js and user-message-hook.js documentation, updated hook count to 7 - architecture/worker-service.mdx: Documented all 14 endpoints organized by category (Viewer & Health, Data Retrieval, Settings, Session Management) - architecture/mcp-search.mdx: Added timeline tools documentation, updated tool count to 9, fixed filename references (search-server.mjs) - architecture-evolution.mdx: Added complete v5.x release history (v5.0.0 through v5.1.2), updated title to "v3 to v5" - hooks-architecture.mdx: Updated to "Seven Hook Scripts", added smart-install and user-message-hook documentation - troubleshooting.mdx: Added v5.x specific issues section (viewer, theme toggle, SSE, Chroma, PM2 Windows fix) ### New Documentation Files: - docs/VIEWER.md: Complete 400+ line guide to web viewer UI including architecture, features, usage, development, API integration, performance considerations - docs/CHROMA.md: Complete 450+ line guide to vector database integration including hybrid search architecture, semantic search explanation, performance benchmarks, installation, configuration, troubleshooting ## Key Corrections Made: 1. ✅ Updated version badges and references: 4.3.1 → 5.1.2 2. ✅ Corrected search tool count: 7 → 9 (added get_context_timeline, get_timeline_by_query) 3. ✅ Fixed MCP server filename: search-server.js → search-server.mjs 4. ✅ Updated hook count: 5 → 7 (added smart-install.js, user-message-hook.js) 5. ✅ Documented all 14 worker endpoints (was 8, incorrectly claimed 6 were missing) 6. ✅ Removed hardcoded personal file paths 7. ✅ Added Chroma vector database documentation 8. ✅ Added viewer UI comprehensive documentation 9. ✅ Updated CHANGELOG with all missing v4.3.2-v5.1.2 releases 10. ✅ Clarified data directory locations (production vs development) 11. ✅ Added smart-install.js caching system documentation 12. ✅ Updated SessionStart hook configuration examples ## Documentation Statistics: - Total files modified: 18 - New files created: 2 - Lines added: ~2,000+ - Version mismatches fixed: 2 critical - Missing features documented: 5+ major - Missing tools documented: 2 MCP tools - Missing endpoints documented: 6 API endpoints ## Impact: Documentation now accurately reflects the current v5.1.2 codebase with: - Complete viewer UI documentation (v5.1.0) - Theme toggle feature (v5.1.2) - Hybrid search architecture with Chroma (v5.0.0) - Smart install caching (v5.0.3) - All 7 hook scripts documented - All 9 MCP search tools documented - All 14 worker service endpoints documented - Comprehensive troubleshooting for v5.x issues 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
219 lines
11 KiB
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219 lines
11 KiB
Plaintext
---
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title: "Architecture Overview"
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description: "System components and data flow in Claude-Mem"
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---
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# Architecture Overview
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## System Components
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Claude-Mem operates as a Claude Code plugin with five core components:
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1. **Plugin Hooks** - Capture lifecycle events (7 hook files)
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2. **Worker Service** - Process observations via Claude Agent SDK
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3. **Database Layer** - Store sessions and observations (SQLite + FTS5)
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4. **MCP Search Server** - Query historical context (9 search tools)
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5. **Viewer UI** - Web-based real-time memory stream visualization
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## Technology Stack
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| Layer | Technology |
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|------------------------|-------------------------------------------|
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| **Language** | TypeScript (ES2022, ESNext modules) |
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| **Runtime** | Node.js 18+ |
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| **Database** | SQLite 3 with better-sqlite3 driver |
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| **Vector Store** | ChromaDB (optional, for semantic search) |
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| **HTTP Server** | Express.js 4.18 |
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| **Real-time** | Server-Sent Events (SSE) |
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| **UI Framework** | React + TypeScript |
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| **AI SDK** | @anthropic-ai/claude-agent-sdk |
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| **Build Tool** | esbuild (bundles TypeScript) |
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| **Process Manager** | PM2 |
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| **Testing** | Node.js built-in test runner |
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## Data Flow
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### Memory Pipeline
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```
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Hook (stdin) → Database → Worker Service → SDK Processor → Database → Next Session Hook
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```
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1. **Input**: Claude Code sends tool execution data via stdin to hooks
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2. **Storage**: Hooks write observations to SQLite database
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3. **Processing**: Worker service reads observations, processes via SDK
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4. **Output**: Processed summaries written back to database
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5. **Retrieval**: Next session's context hook reads summaries from database
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### Search Pipeline
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```
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Claude Request → MCP Server → SessionSearch Service → FTS5 Database → Search Results → Claude
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```
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1. **Query**: Claude uses MCP search tools (e.g., `search_observations`)
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2. **Search**: MCP server calls SessionSearch service with query parameters
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3. **FTS5**: Full-text search executes against FTS5 virtual tables
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4. **Format**: Results formatted as `search_result` blocks with citations
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5. **Return**: Claude receives citable search results for analysis
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## Session Lifecycle
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```
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┌─────────────────────────────────────────────────────────────────┐
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│ 0. Smart Install Hook Fires │
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│ Checks dependencies (cached), only runs on version changes │
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└─────────────────────────────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────────────┐
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│ 1. Session Starts → Context Hook Fires │
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│ Starts PM2 worker if needed, injects context from previous │
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│ sessions (configurable observation count) │
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└─────────────────────────────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────────────┐
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│ 2. User Types Prompt → UserPromptSubmit Hook Fires │
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│ Creates session in database, saves raw user prompt for FTS5 │
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└─────────────────────────────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────────────┐
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│ 3. Claude Uses Tools → PostToolUse Hook Fires (100+ times) │
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│ Captures tool executions, sends to worker for AI compression │
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└─────────────────────────────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────────────┐
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│ 4. Worker Processes → Claude Agent SDK Analyzes │
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│ Extracts structured learnings via iterative AI processing │
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└─────────────────────────────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────────────┐
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│ 5. Claude Stops → Summary Hook Fires │
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│ Generates final summary with request, completions, learnings │
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└─────────────────────────────────────────────────────────────────┘
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↓
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┌─────────────────────────────────────────────────────────────────┐
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│ 6. Session Ends → Cleanup Hook Fires │
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│ Marks session complete (graceful, not DELETE), ready for │
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│ next session context. Skips on /clear to preserve ongoing │
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└─────────────────────────────────────────────────────────────────┘
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```
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## Directory Structure
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```
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claude-mem/
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├── src/
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│ ├── hooks/ # Hook implementations (7 hooks)
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│ │ ├── smart-install.ts # Dependency check (cached)
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│ │ ├── context-hook.ts # SessionStart
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│ │ ├── user-message-hook.ts # UserMessage (for debugging)
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│ │ ├── new-hook.ts # UserPromptSubmit
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│ │ ├── save-hook.ts # PostToolUse
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│ │ ├── summary-hook.ts # Stop
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│ │ └── cleanup-hook.ts # SessionEnd
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│ │
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│ ├── servers/ # MCP servers
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│ │ └── search-server.ts # MCP search tools server (9 tools)
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│ │
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│ ├── sdk/ # Claude Agent SDK integration
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│ │ ├── prompts.ts # XML prompt builders
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│ │ ├── parser.ts # XML response parser
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│ │ └── worker.ts # Main SDK agent loop
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│ │
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│ ├── services/
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│ │ ├── worker-service.ts # Express HTTP + SSE service
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│ │ └── sqlite/ # Database layer
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│ │ ├── SessionStore.ts # CRUD operations
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│ │ ├── SessionSearch.ts # FTS5 search service
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│ │ ├── migrations.ts
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│ │ └── types.ts
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│ │
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│ ├── ui/ # Viewer UI
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│ │ └── viewer/ # React + TypeScript web interface
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│ │ ├── components/ # UI components
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│ │ ├── hooks/ # React hooks
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│ │ ├── utils/ # Utilities
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│ │ └── assets/ # Fonts, logos
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│ │
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│ ├── shared/ # Shared utilities
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│ │ ├── config.ts
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│ │ ├── paths.ts
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│ │ └── storage.ts
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│ │
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│ └── utils/
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│ ├── logger.ts
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│ ├── platform.ts
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│ └── port-allocator.ts
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│
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├── plugin/ # Plugin distribution
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│ ├── .claude-plugin/
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│ │ └── plugin.json
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│ ├── .mcp.json # MCP server configuration
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│ ├── hooks/
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│ │ └── hooks.json
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│ ├── scripts/ # Built executables
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│ │ ├── smart-install.js
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│ │ ├── context-hook.js
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│ │ ├── user-message-hook.js
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│ │ ├── new-hook.js
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│ │ ├── save-hook.js
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│ │ ├── summary-hook.js
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│ │ ├── cleanup-hook.js
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│ │ ├── worker-service.cjs # Background worker
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│ │ └── search-server.mjs # MCP search server
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│ │
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│ └── ui/ # Built viewer UI
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│ └── viewer.html # Self-contained bundle
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│
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├── tests/ # Test suite
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├── docs/ # Documentation
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└── ecosystem.config.cjs # PM2 configuration
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```
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## Component Details
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### 1. Plugin Hooks (7 Hooks)
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- **smart-install.js** - Cached dependency checker (only runs on version changes)
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- **context-hook.js** - SessionStart: Starts PM2 worker, injects context
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- **user-message-hook.js** - UserMessage: Debugging hook
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- **new-hook.js** - UserPromptSubmit: Creates session, saves prompt
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- **save-hook.js** - PostToolUse: Captures tool executions
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- **summary-hook.js** - Stop: Generates session summary
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- **cleanup-hook.js** - SessionEnd: Marks session complete
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See [Plugin Hooks](/architecture/hooks) for detailed hook documentation.
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### 2. Worker Service
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Express.js HTTP server on port 37777 (configurable) with:
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- 8 HTTP/SSE endpoints for viewer UI
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- Async observation processing via Claude Agent SDK
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- Real-time updates via Server-Sent Events
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- Auto-managed by PM2 process manager
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See [Worker Service](/architecture/worker-service) for HTTP API and endpoints.
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### 3. Database Layer
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SQLite3 with better-sqlite3 driver featuring:
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- FTS5 virtual tables for full-text search
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- SessionStore for CRUD operations
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- SessionSearch for FTS5 queries
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- Location: `~/.claude-mem/claude-mem.db`
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See [Database Architecture](/architecture/database) for schema and FTS5 search.
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### 4. MCP Search Server (9 Tools)
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Provides 9 specialized search tools:
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- search_observations, search_sessions, search_user_prompts
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- find_by_concept, find_by_file, find_by_type
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- get_recent_context, get_context_timeline, get_timeline_by_query
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See [MCP Search Server](/architecture/mcp-search) for search tools and examples.
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### 5. Viewer UI
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React + TypeScript web interface at http://localhost:37777 featuring:
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- Real-time memory stream via Server-Sent Events
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- Infinite scroll pagination with automatic deduplication
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- Project filtering and settings persistence
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- GPU-accelerated animations
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- Self-contained HTML bundle (viewer.html)
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Built with esbuild into a single file deployment.
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