Site Brief API Docs

Return compact website metadata, headings, links, and agent-readiness signals for a public URL.

Paid endpoint: GET https://agentic-market-site-brief.vercel.app/api/site-brief?url=https://example.com
Price: $0.001
Network: eip155:8453
Payment request header from clients: X-PAYMENT
Payment challenge header from server: PAYMENT-REQUIRED

Feedback endpoints:
- GET https://agentic-market-site-brief.vercel.app/feedback
- POST https://agentic-market-site-brief.vercel.app/api/feedback (free feedback or idea submission)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/vote (free vote for an existing feedbackId)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/priority/standard ($0.005 priority feedback)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/priority/high ($0.025 higher-priority feedback)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/priority/urgent ($0.10 urgent-priority feedback)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/upvote/standard ($0.002 paid upvote)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/upvote/high ($0.01 stronger paid upvote)
- POST https://agentic-market-site-brief.vercel.app/api/feedback/upvote/urgent ($0.05 urgent paid upvote)

Discovery:
- OpenAPI: https://agentic-market-site-brief.vercel.app/openapi.yaml
- llms.txt: https://agentic-market-site-brief.vercel.app/llms.txt
- MCP endpoint: https://agentic-market-site-brief.vercel.app/mcp
- MCP server card: https://agentic-market-site-brief.vercel.app/.well-known/mcp/server-card.json
- Agent card: https://agentic-market-site-brief.vercel.app/.well-known/agent-card.json

Example:
curl -i 'https://agentic-market-site-brief.vercel.app/api/site-brief?url=https://example.com'

The first request returns HTTP 402 with x402 payment requirements. Use an x402-compatible client, pay on Base USDC, then retry with X-PAYMENT.