Keyless pay-per-call API for AI agents: 316 endpoints across 95+ groups. Patents & trademarks (USPTO), legal (CourtListener), government & economy (SEC EDGAR, Census, World Bank, Federal Register), finance/markets, science & medicine (arXiv, PubMed, ICD-10, drug data), vehicles & aviation (NHTSA), geo & weather (OpenStreetMap, NWS/NOAA, USGS), business registries (GLEIF LEI), sanctions screening (OFAC), cybersecurity (CVE/KEV/EPSS), and web/data utilities. No signup, no API key: pay per request in USDC on Base or Solana via x402. Machine-readable OpenAPI, llms.txt, JSON-LD, and MCP server card.
Pay from $0.001 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /api/geo/ip | $0.001 | Base/Solana | USDC | |
| GET | /api/law/case-search | $0.004 | Base/Solana | USDC | |
| GET | /api/medical/icd10 | $0.001 | Base/Solana | USDC | |
| GET | /api/patents/search | $0.002 | Base/Solana | USDC | |
| GET | /api/vehicle/vin-decode | $0.002 | Base/Solana | USDC | |
| GET | /api/wikipedia/summary | $0.001 | Base/Solana | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /api/geo/ip returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://2s.io/api/geo/ip'
No 402 response body has been captured for this service yet.
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