# Suede Signal

> Suede Signal is a free, instant AI-visibility audit by Suede AI. Paste a URL and get a 0–100 score and A–F grade for how readable, verifiable, and citable the page is to AI answer engines (ChatGPT, Claude, Perplexity, Gemini). 26 deterministic checks, no signup, nothing stored.

## Product

- [Run an audit](https://signal.suedeai.ai/): the free audit, competitor comparison, and Mention Watch
- [Documentation](https://signal.suedeai.ai/docs): what the audit is, how it works, and what it can't promise
- [Scoring & lanes](https://signal.suedeai.ai/docs/scoring): all 26 checks, lane weights, and grade bands
- [Fix guide](https://signal.suedeai.ai/docs/fixes): copy-pasteable fixes for every failing check
- [Mention Watch](https://signal.suedeai.ai/docs/mention-watch): finding and joining the community threads AI learns from
- [API reference](https://signal.suedeai.ai/docs/api): POST /api/audit and GET /api/mentions
- [FAQ](https://signal.suedeai.ai/docs/faq): common questions, including what a high score does and doesn't guarantee

## Articles

- [What Is llms.txt and Should Your Site Have One?](https://signal.suedeai.ai/articles/what-is-llms-txt): the proposal, the format, and an honest read on adoption
- [Which AI Crawlers Should You Allow?](https://signal.suedeai.ai/articles/which-ai-crawlers-to-allow): GPTBot, ClaudeBot, PerplexityBot, Google-Extended, CCBot, and the retrieval agents people forget
- [How JSON-LD Helps AI Engines Understand Your Brand](https://signal.suedeai.ai/articles/json-ld-for-ai-visibility): entity schema, FAQ markup, and the anti-patterns to skip
- [How to Write Passages AI Answer Engines Can Quote](https://signal.suedeai.ai/articles/citable-passages): answer-first structure with before/after rewrites
- [AI Visibility Extends SEO, It Does Not Replace It](https://signal.suedeai.ai/articles/ai-visibility-vs-seo): what carries over, what changes, what to measure
- [Where AI Engines Learn What People Think About Brands](https://signal.suedeai.ai/articles/where-ai-engines-learn-about-brands): community threads, licensing deals, and disclosure-first participation

## Company

- [Suede AI](https://suedeai.ai): the studio behind Suede Signal
- [Suede AI Agent Studio](https://agents.suedeai.ai): build the Mention Watch loop as a scheduled agent with approval gates

## Source and citation guide

- [AI Instructions](https://signal.suedeai.ai/ai-instructions): Site identity, authoritative sources and citation guidance.