# Standard Web

> The public index of agent-usable websites. We grade how usable a website is by user-directed AI agents (Muse, ChatGPT Agent, Claude, Comet, Grok Bot, Gemini, Manus, Instinct): can an agent get in, read the site, and act on it? Scores are 0-100 with letter grades A+ to F and a stance of Open, Selective or Walled. Method v0.1.

Agents are welcome here. This site publishes a Content-Signal (search=yes, ai-input=yes, ai-train=yes), serves normal pages to identified agents, and exposes its data by JSON API and MCP.

## Pages
- [The Index](https://standardweb.xyz/index): every graded company, ranked, with one line of evidence each
- [Compatibility matrix](https://standardweb.xyz/compat): which agents can use which sites
- [Methodology](https://standardweb.xyz/methodology): pillars, weights, grade bands, what is not yet proven
- [For site owners](https://standardweb.xyz/for-site-owners): six steps with real syntax to become agent-usable
- [Report card](https://standardweb.xyz/site/www.amazon.com): example report card (Amazon)

## Data & tools
- [Index JSON](https://standardweb.xyz/api/index.json): the full ranking with pillars and per-agent compatibility
- [Site JSON](https://standardweb.xyz/api/site/www.amazon.com.json): one report card as JSON (replace the host)
- [Run a scan](https://standardweb.xyz/api/scan?url=example.com): live scan of any public site, cached 24h, 10 per hour per client
- [OpenAPI](https://standardweb.xyz/openapi.json): REST description
- [MCP endpoint](https://standardweb.xyz/mcp): Streamable HTTP, JSON responses; tools get_index, get_site, scan_site
- [MCP server card](https://standardweb.xyz/.well-known/mcp.json)

## How to read a score
- Access (40): robots.txt stance toward user-directed agents + a live door test as four identified agents
- Consent & identity path (10): Content-Signal, a discoverable way in
- Machine-readable surface (25): llms.txt, JSON-LD, landmarks, server rendering
- Agent protocols (15): UCP, MCP, A2A, OpenAPI
- Task completion (10): pending; a real agent running search → cart → checkout