← All endpoints
attester.dev symbol signature
https://attester.dev/v1/symbol/signature
payable
Full signature for a symbol in a PyPI or npm package at an exact version: structured params, docstring, deprecation flag with since-version, extracted from the real artifact with signed proof. $0.01 USDC per lookup.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x57407D691F755cAa107647718F3582a8A87467dD
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 6378 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:10:31.232Z (1d ago)
- Category
- web-scraping
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fattester.dev%2Fv1%2Fsymbol%2Fsignature"