{"name":"Null Limit Knowledge API","version":"0.1.0","description":"Verified intelligence for AI agents and developers. Cross-border ecom + OpenClaw ecosystem data.","endpoints":{"discovery":["GET /","GET /openapi.json","GET /llm.txt","GET /payments/quote"],"data":["POST /enrich","GET /query","POST /verify/checkout"],"keys":["POST /keys/create","GET /keys/balance"],"payments":["POST /payments/stripe/checkout","POST /payments/stripe/webhook","POST /payments/solana/verify"]},"auth":"x-api-key header required for data + key endpoints","get_key":"GET /payments/quote for programmatic pricing, then pay via Stripe or Solana","docs":"https://api.nulllimit.gg"}