x402 Agent Services

● down crypto

USDC pay-per-call APIs for AI agents via the x402 protocol (v2, exact, Base mainnet). Send a request, receive HTTP 402 with payment requirements, pay with @x402/fetch or any x402 client, retry with the PAYMENT-SIGNATURE header.

Quality grade

How grading works

D 13.7 / 100 capped at D while down

Availability 0.0 / 40

Endpoint did not respond

Payability 10.0 / 20

✗ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 3.7 / 40

1 distinct payers, 1 USDC transfers in the last 30 days

Owner verified 0.0 / 3

Nobody has claimed this listing yet

Endpoint last checked 22 h ago. On-chain activity last read 17 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

8 resource(s) advertised by this origin.

https://call402.com/api/domain-lookup

https://call402.com/api/email-verify

https://call402.com/api/fear-greed-index

https://call402.com/api/fx-rates

https://call402.com/api/qr-code

https://call402.com/api/ssl-check

https://call402.com/api/text-extract

https://call402.com/api/text-to-structure

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://call402.com/api/domain-lookup  # expect HTTP 402 Payment Required (about $0.005/call)

/.well-known/x402.json

https://call402.com/.well-known/x402

Listed in

Directories this entry was found in.

x402scan