Nansen
Onchain analytics — wallet profiling, token screeners, DEX trades and Smart Money flows. Roughly 25 Pro-tier endpoints are x402-gated at $0.01–$0.05 per call in USDC, settling on Base or Solana, with no subscription.
Full APIper-request+ USDC+ x402
https://nansen.ai · Agent services
Rails
| Rail | Chain | Health | Verify |
|---|---|---|---|
| $ USDC | base | healthy | |
| $ USDC | solana | healthy |
Agent endpoints
| REST API | https://api.nansen.ai/api/v1 |
|---|---|
| Auth | No account needed on the x402 path — a request with no API key returns 402 with the price for that endpoint's tier. Coverage is a SUBSET, not the whole API: /token-screener and the profiler, tgm and smart-money families answer 402, while some endpoints (e.g. /tgm/balances) reply 'API key required. This endpoint does not support paid access.' Probe the specific endpoint before assuming it is payable. |
| API docs | https://docs.nansen.ai/getting-started/agentic-payments/x402-payments |
Query this merchant from an agent
get_merchant({ id: "nansen" })