RuleDrift

Catch the moment your agent drifts from its rules.

RuleDrift tests whether an AI agent still follows important instructions after a conversation becomes long or distracting.

Run it like a test suite when you change a prompt, model, memory system, or agent workflow. It runs locally and does not sit in front of production requests.

Quick start

Requires Node.js 22+ and Ollama.

ollama pull qwen3:1.7b
npx rule-drift init
npx rule-drift test

No paid model API, account, backend, or telemetry is required.

What you get

• The first conversation point where a rule fails
• Terminal, JSON, and JUnit reports
• Local Ollama and bring-your-own-agent support
• Optional MCP tools for AI coding clients
• Stable exit codes for CI

MCP

npx -y rule-drift mcp --root /path/to/your/project

See the MCP setup guide for client configuration and safety details.

Documentation

• Full guide
• All documentation

Contributions are welcome—see CONTRIBUTING.md. Licensed under MIT.