Doormat x402lint — spec checker

https://x402lint.sebastiaan-ba3.workers.dev

● healthy developer-tools

Checks whether an x402-paywalled API responds correctly to the protocol (free /lint). Paid /deep-lint (0.03 USDC) gives a full compliance report. Paid /conform (0.05 USDC) runs live adversarial probes (garbage payment headers, fake tx hashes, replayed rejects) against any paid x402 endpoint to catch fail-open bugs that accidentally give the product away for free.

Quality grade

How grading works

B 63.0 / 100

Availability 40.0 / 40

Endpoint responded (HTTP 200)

Payability 20.0 / 20

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

Demand 0.0 / 40

0 distinct payers, 0 USDC transfers in the last 30 days

Owner verified 3.0 / 3

Operator proved control of this domain

Endpoint last checked 6 h ago. On-chain activity last read 12 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

How to call

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

curl -X POST https://x402lint.sebastiaan-ba3.workers.dev/deep-lint

/.well-known/x402.json

https://x402lint.sebastiaan-ba3.workers.dev/.well-known/x402

Listed in

Directories this entry was found in.

x402scan