tzachbon/claude-model-router-hook

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# Claude Model Router Hook

**Effort-first model routing for Claude Code. Heuristics-first, opt-in autoswitch.**

[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
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<video src="docs/slides/public/model-router.mov" width="887" controls></video>

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A Claude Code hook system that classifies every prompt into a task class and effort level, then routes it to the right model. Warning is the default; autoswitch is opt-in. Sub-agent routing is enforced at spawn time so spawned agents also land on the right tier.

## Features

- Classifies each prompt into a task class and effort level with a heuristics-first classifier; no API key required
- Warns by default; opt-in autoswitch writes the recommended model to `~/.claude/settings.json` for new sessions only

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