the402 endpoint detail

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intent-api-matchmaker-staging-production.up.railway.app v1 match

https://intent-api-matchmaker-staging-production.up.railway.app/v1/match

answers 402

Match normalized agent intents to endpoint contracts with explainable constraints.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base-sepolia
Pay to
0xBf11E11aB3607Ae7f1c51b79fd0e585C0ccA4B82
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
375 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:22:32.513Z (21d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fintent-api-matchmaker-staging-production.up.railway.app%2Fv1%2Fmatch"