Alex Newman
817b9e8f27
* fix: prevent memory_session_id from equaling content_session_id The bug: memory_session_id was initialized to contentSessionId as a "placeholder for FK purposes". This caused the SDK resume logic to inject memory agent messages into the USER's Claude Code transcript, corrupting their conversation history. Root cause: - SessionStore.createSDKSession initialized memory_session_id = contentSessionId - SDKAgent checked memorySessionId !== contentSessionId but this check only worked if the session was fetched fresh from DB The fix: - SessionStore: Initialize memory_session_id as NULL, not contentSessionId - SDKAgent: Simple truthy check !!session.memorySessionId (NULL = fresh start) - Database migration: Ran UPDATE to set memory_session_id = NULL for 1807 existing sessions that had the bug Also adds [ALIGNMENT] logging across the session lifecycle to help debug session continuity issues: - Hook entry: contentSessionId + promptNumber - DB lookup: contentSessionId → memorySessionId mapping proof - Resume decision: shows which memorySessionId will be used for resume - Capture: logs when memorySessionId is captured from first SDK response UI: Added "Alignment" quick filter button in LogsModal to show only alignment logs for debugging session continuity. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * refactor: improve error handling in worker-service.ts - Fix GENERIC_CATCH anti-patterns by logging full error objects instead of just messages - Add [ANTI-PATTERN IGNORED] markers for legitimate cases (cleanup, hot paths) - Simplify error handling comments to be more concise - Improve httpShutdown() error discrimination for ECONNREFUSED - Reduce LARGE_TRY_BLOCK issues in initialization code Part of anti-pattern cleanup plan (132 total issues) * refactor: improve error logging in SearchManager.ts - Pass full error objects to logger instead of just error.message - Fixes PARTIAL_ERROR_LOGGING anti-patterns (10 instances) - Better debugging visibility when Chroma queries fail Part of anti-pattern cleanup (133 remaining) * refactor: improve error logging across SessionStore and mcp-server - SessionStore.ts: Fix error logging in column rename utility - mcp-server.ts: Log full error objects instead of just error.message - Improve error handling in Worker API calls and tool execution Part of anti-pattern cleanup (133 remaining) * Refactor hooks to streamline error handling and loading states - Simplified error handling in useContextPreview by removing try-catch and directly checking response status. - Refactored usePagination to eliminate try-catch, improving readability and maintaining error handling through response checks. - Cleaned up useSSE by removing unnecessary try-catch around JSON parsing, ensuring clarity in message handling. - Enhanced useSettings by streamlining the saving process, removing try-catch, and directly checking the result for success. * refactor: add error handling back to SearchManager Chroma calls - Wrap queryChroma calls in try-catch to prevent generator crashes - Log Chroma errors as warnings and fall back gracefully - Fixes generator failures when Chroma has issues - Part of anti-pattern cleanup recovery * feat: Add generator failure investigation report and observation duplication regression report - Created a comprehensive investigation report detailing the root cause of generator failures during anti-pattern cleanup, including the impact, investigation process, and implemented fixes. - Documented the critical regression causing observation duplication due to race conditions in the SDK agent, outlining symptoms, root cause analysis, and proposed fixes. * fix: address PR #528 review comments - atomic cleanup and detector improvements This commit addresses critical review feedback from PR #528: ## 1. Atomic Message Cleanup (Fix Race Condition) **Problem**: SessionRoutes.ts generator error handler had race condition - Queried messages then marked failed in loop - If crash during loop → partial marking → inconsistent state **Solution**: - Added `markSessionMessagesFailed()` to PendingMessageStore.ts - Single atomic UPDATE statement replaces loop - Follows existing pattern from `resetProcessingToPending()` **Files**: - src/services/sqlite/PendingMessageStore.ts (new method) - src/services/worker/http/routes/SessionRoutes.ts (use new method) ## 2. Anti-Pattern Detector Improvements **Problem**: Detector didn't recognize logger.failure() method - Lines 212 & 335 already included "failure" - Lines 112-113 (PARTIAL_ERROR_LOGGING detection) did not **Solution**: Updated regex patterns to include "failure" for consistency **Files**: - scripts/anti-pattern-test/detect-error-handling-antipatterns.ts ## 3. Documentation **PR Comment**: Added clarification on memory_session_id fix location - Points to SessionStore.ts:1155 - Explains why NULL initialization prevents message injection bug ## Review Response Addresses "Must Address Before Merge" items from review: ✅ Clarified memory_session_id bug fix location (via PR comment) ✅ Made generator error handler message cleanup atomic ❌ Deferred comprehensive test suite to follow-up PR (keeps PR focused) ## Testing - Build passes with no errors - Anti-pattern detector runs successfully - Atomic cleanup follows proven pattern from existing methods 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com> * fix: FOREIGN KEY constraint and missing failed_at_epoch column Two critical bugs fixed: 1. Missing failed_at_epoch column in pending_messages table - Added migration 20 to create the column - Fixes error when trying to mark messages as failed 2. FOREIGN KEY constraint failed when storing observations - All three agents (SDK, Gemini, OpenRouter) were passing session.contentSessionId instead of session.memorySessionId - storeObservationsAndMarkComplete expects memorySessionId - Added null check and clear error message However, observations still not saving - see investigation report. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com> * Refactor hook input parsing to improve error handling - Added a nested try-catch block in new-hook.ts, save-hook.ts, and summary-hook.ts to handle JSON parsing errors more gracefully. - Replaced direct error throwing with logging of the error details using logger.error. - Ensured that the process exits cleanly after handling input in all three hooks. --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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Persistent memory compression system built for Claude Code.
Quick Start • How It Works • Search Tools • Documentation • Configuration • Troubleshooting • License
Claude-Mem seamlessly preserves context across sessions by automatically capturing tool usage observations, generating semantic summaries, and making them available to future sessions. This enables Claude to maintain continuity of knowledge about projects even after sessions end or reconnect.
Quick Start
Start a new Claude Code session in the terminal and enter the following commands:
> /plugin marketplace add thedotmack/claude-mem
> /plugin install claude-mem
Restart Claude Code. Context from previous sessions will automatically appear in new sessions.
Key Features:
- 🧠 Persistent Memory - Context survives across sessions
- 📊 Progressive Disclosure - Layered memory retrieval with token cost visibility
- 🔍 Skill-Based Search - Query your project history with mem-search skill
- 🖥️ Web Viewer UI - Real-time memory stream at http://localhost:37777
- 💻 Claude Desktop Skill - Search memory from Claude Desktop conversations
- 🔒 Privacy Control - Use
<private>tags to exclude sensitive content from storage - ⚙️ Context Configuration - Fine-grained control over what context gets injected
- 🤖 Automatic Operation - No manual intervention required
- 🔗 Citations - Reference past observations with IDs (access via http://localhost:37777/api/observation/{id} or view all in the web viewer at http://localhost:37777)
- 🧪 Beta Channel - Try experimental features like Endless Mode via version switching
Documentation
📚 View Full Documentation - Browse markdown docs on GitHub
Getting Started
- Installation Guide - Quick start & advanced installation
- Usage Guide - How Claude-Mem works automatically
- Search Tools - Query your project history with natural language
- Beta Features - Try experimental features like Endless Mode
Best Practices
- Context Engineering - AI agent context optimization principles
- Progressive Disclosure - Philosophy behind Claude-Mem's context priming strategy
Architecture
- Overview - System components & data flow
- Architecture Evolution - The journey from v3 to v5
- Hooks Architecture - How Claude-Mem uses lifecycle hooks
- Hooks Reference - 7 hook scripts explained
- Worker Service - HTTP API & Bun management
- Database - SQLite schema & FTS5 search
- Search Architecture - Hybrid search with Chroma vector database
Configuration & Development
- Configuration - Environment variables & settings
- Development - Building, testing, contributing
- Troubleshooting - Common issues & solutions
How It Works
Core Components:
- 5 Lifecycle Hooks - SessionStart, UserPromptSubmit, PostToolUse, Stop, SessionEnd (6 hook scripts)
- Smart Install - Cached dependency checker (pre-hook script, not a lifecycle hook)
- Worker Service - HTTP API on port 37777 with web viewer UI and 10 search endpoints, managed by Bun
- SQLite Database - Stores sessions, observations, summaries
- mem-search Skill - Natural language queries with progressive disclosure
- Chroma Vector Database - Hybrid semantic + keyword search for intelligent context retrieval
See Architecture Overview for details.
MCP Search Tools
Claude-Mem provides intelligent memory search through 4 MCP tools following a token-efficient 3-layer workflow pattern:
The 3-Layer Workflow:
search- Get compact index with IDs (~50-100 tokens/result)timeline- Get chronological context around interesting resultsget_observations- Fetch full details ONLY for filtered IDs (~500-1,000 tokens/result)
How It Works:
- Claude uses MCP tools to search your memory
- Start with
searchto get an index of results - Use
timelineto see what was happening around specific observations - Use
get_observationsto fetch full details for relevant IDs - ~10x token savings by filtering before fetching details
Available MCP Tools:
search- Search memory index with full-text queries, filters by type/date/projecttimeline- Get chronological context around a specific observation or queryget_observations- Fetch full observation details by IDs (always batch multiple IDs)__IMPORTANT- Workflow documentation (always visible to Claude)
Example Usage:
// Step 1: Search for index
search(query="authentication bug", type="bugfix", limit=10)
// Step 2: Review index, identify relevant IDs (e.g., #123, #456)
// Step 3: Fetch full details
get_observations(ids=[123, 456])
See Search Tools Guide for detailed examples.
Beta Features
Claude-Mem offers a beta channel with experimental features like Endless Mode (biomimetic memory architecture for extended sessions). Switch between stable and beta versions from the web viewer UI at http://localhost:37777 → Settings.
See Beta Features Documentation for details on Endless Mode and how to try it.
System Requirements
- Node.js: 18.0.0 or higher
- Claude Code: Latest version with plugin support
- Bun: JavaScript runtime and process manager (auto-installed if missing)
- uv: Python package manager for vector search (auto-installed if missing)
- SQLite 3: For persistent storage (bundled)
Configuration
Settings are managed in ~/.claude-mem/settings.json (auto-created with defaults on first run). Configure AI model, worker port, data directory, log level, and context injection settings.
See the Configuration Guide for all available settings and examples.
Development
See the Development Guide for build instructions, testing, and contribution workflow.
Troubleshooting
If experiencing issues, describe the problem to Claude and the troubleshoot skill will automatically diagnose and provide fixes.
See the Troubleshooting Guide for common issues and solutions.
Bug Reports
Create comprehensive bug reports with the automated generator:
cd ~/.claude/plugins/marketplaces/thedotmack
npm run bug-report
Contributing
Contributions are welcome! Please:
- Fork the repository
- Create a feature branch
- Make your changes with tests
- Update documentation
- Submit a Pull Request
See Development Guide for contribution workflow.
License
This project is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0).
Copyright (C) 2025 Alex Newman (@thedotmack). All rights reserved.
See the LICENSE file for full details.
What This Means:
- You can use, modify, and distribute this software freely
- If you modify and deploy on a network server, you must make your source code available
- Derivative works must also be licensed under AGPL-3.0
- There is NO WARRANTY for this software
Note on Ragtime: The ragtime/ directory is licensed separately under the PolyForm Noncommercial License 1.0.0. See ragtime/LICENSE for details.
Support
- Documentation: docs/
- Issues: GitHub Issues
- Repository: github.com/thedotmack/claude-mem
- Author: Alex Newman (@thedotmack)
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