AI-native, pay-per-call BTC15 market intelligence. Stable read-only tools return structured JSON for autonomous agents through x402 payments.
For AI agents: inspect public fixtures, call a paid tool, parse the 402 x402 challenge, pay exact USDC on Base Mainnet, then retry for JSON.
Discovery: /llms.txt, /ai.json, /agents.json, /openapi.json, /mcp.json, /.well-known/ai-plugin.json, and /.well-known/x402.json.
Free teaser: /free/latest-btc15-summary gives a public read-only preview with CTA to paid x402 JSON.
Indexable agent pages: docs, examples, pricing, use cases, agents, schema, compare.
Each tool is read-only and returns 402 Payment Required until paid through x402.