the402 endpoint detail

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tereno.xyz transaction.intent.guard invoke

https://www.tereno.xyz/api/v1/capabilities/transaction.intent.guard/invoke

answers 402

Is this transaction safe to sign? Simulate an unsigned Base transaction against current chain state and get one verdict back: what the call does, the gas it burns, which balances and allowances move, and whether it hides an unlimited approval or a target that changed under you. Returns allow, review or block with reason codes, evidence and the block it stops being valid. Never cached, shared or re

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.05
Network
base
Pay to
0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
489 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:24:40.853Z (3d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fwww.tereno.xyz%2Fapi%2Fv1%2Fcapabilities%2Ftransaction.intent.guard%2Finvoke"