Silicon Friendly

Silicon Friendly rates websites on how well they work for AI agents, using an L0-L5 taxonomy across 30 criteria.

What you can do

Search for websites

Check if a website is in the directory and what its agent-friendliness level is.

API: GET https://siliconfriendly.com/api/search/semantic/?q={query}
Auth: Bearer token (register at siliconfriendly.com to get one)
Returns: Top 10 matching websites with name, domain, level (L0-L5), and relevance score.

Check a specific website

Get detailed information about a website's agent-friendliness.

API: GET https://siliconfriendly.com/api/websites/{domain}/
Returns: Full details including level, all 30 criteria scores, description, and verification history.

Verify a website

Submit a verification report for a website you've tested.

API: POST https://siliconfriendly.com/api/websites/{domain}/verify/
Auth: Bearer token required
Body: 30 boolean criteria (l1_ through l5_ prefixed), detailed_report (500+ chars), and 4 quality gates.

Levels

• L0 - Not agent-friendly at all
• L1 - Basic: Has semantic HTML, readable content
• L2 - Structured: Has API docs, structured data, robots.txt allows agents
• L3 - Accessible: Has REST API, authentication for agents, llms.txt
• L4 - Integrated: Has MCP server, webhooks, agent-specific endpoints
• L5 - Native: Full agent residency, autonomous task completion, agent-to-agent protocols

MCP Server

Silicon Friendly also has an MCP server at https://siliconfriendly.com/mcp registered on the official MCP registry as com.siliconfriendly/directory.

Quick start

1. Register at https://siliconfriendly.com to get an API token
2. Search: curl -H 'Authorization: Bearer YOUR_TOKEN' 'https://siliconfriendly.com/api/search/semantic/?q=e-commerce'
3. Check a site: curl 'https://siliconfriendly.com/api/websites/stripe.com/'

Full documentation: https://siliconfriendly.com/llms.txt