Reflect

What it does

Reflect is a Rust-based MCP server that implements the Reflexion pattern, allowing AI coding agents to learn from their mistakes. It captures failures, extracts deterministic error patterns, and stores them as persistent lessons in an SQLite database, preventing the agent from repeating the same errors in future sessions.

Tools

• evaluate_output: Runs evaluators (cargo test, pytest, eslint, tsc) and generates structured pass/fail signals.
• reflect_on_output: Stores a reflection with automatic pattern extraction and deduplication.
• store_reflection: Stores a standalone lesson without needing a specific evaluation signal.
• recall_reflections: Searches past lessons using full-text search (FTS5) based on task and tags.
• get_error_patterns: Lists recurring error patterns with frequency and trend data.
• get_reflection_stats: Provides aggregated statistics on total reflections, outcomes, and top patterns.
• forget_reflection: Deletes a specific reflection by ID.

Installation

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "reflect": {
      "command": "/path/to/reflect-mcp",
      "args": []
    }
  }
}

Supported hosts

Confirmed for Claude Desktop and Claude Code.