Onto

Wraps the Onto Read API to give Claude clean, AI-ready Markdown from any URL without the noise of raw HTML. Exposes three tools: read_url strips a page down to content (typically 90% smaller), score_url returns an AIO readability score with hallucination risk, and read_and_score does both in one call. Useful when you're building agents that need to parse documentation, pricing pages, or articles without burning tokens on React boilerplate and layout markup. Requires an API key from buildonto.dev. Free tier gives you 1,000 requests per month, paid plans start at $9 for 10k. Install via npx in Claude Code, Cursor, Cline, or any MCP host.