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401-chi.vercel.app v1 symbol
https://401-chi.vercel.app/api/v1/symbol
payable
Verify whether a named API symbol is publicly exported by an exact npm package version. Returns structured existence, export kind, certainty, and package-artifact evidence.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.003
- Network
- base
- Pay to
- 0x4C7128ECE22D35eDBf342c7feaEc336080a88227
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 188 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:11:24.683Z (1d ago)
- Category
- identity
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2F401-chi.vercel.app%2Fapi%2Fv1%2Fsymbol"