the402 endpoint detail

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x402.freeq.one tools verify_semaphore

https://x402.freeq.one/tools/verify_semaphore

answers 402

x402-gateway tool: verify_semaphore — Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency. Send the proof object from @semaphore-protocol/proof generateProof().

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0x90b0dC893406d6eA63bb077ED59F5e8340f98d84
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
102 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:13:18.912Z (20d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.freeq.one%2Ftools%2Fverify_semaphore"