LION Trend Intent MCP

Read-only x402-paid MCP data service. Hardware-wallet buyer-intent and self-custody onboarding-friction signals. $0.01 USDC on Base mainnet. No PII.

Paid x402 v2 routes

• GET /api/x402/trend-intent-raw-signal-json - application/json
• GET /api/x402/trend-intent-raw-signal-csv - text/csv

Both return HTTP 402 with a base64-encoded Payment-Required header until the buyer retries with a valid Payment-Signature header carrying an EIP-3009 USDC TransferWithAuthorization on Base mainnet (CAIP-2 eip155:8453).

Free discovery metadata

• GET /api/x402/catalog - paid routes + pricing + openapi pointer
• GET /.well-known/x402.json - well-known site descriptor
• GET /openapi.json - OpenAPI 3.1 specification (root)
• GET /.well-known/openapi.json - OpenAPI 3.1 specification (well-known)
• GET /.well-known/mcp.json - MCP descriptor
• GET /api/mcp - MCP Streamable HTTP endpoint (JSON-RPC: initialize, tools/list, tools/call)
• GET /llms.txt - machine-readable agent guide

Data policy

No PII. No customer or contractor data. No bank or card data. No credentials. No tracking. LION does not custody funds, does not move funds, does not sign transactions, does not issue invoices, and does not auto-create accounts.

Build: LION_HW_STERILE_BUILD_ID=G_X402SCAN_INPUT_SCHEMA_003_2026_05_24