other · Listed · Found · 1 endpoint · Gateway-eligible
Nishvault x402 Pre-Send Guard
Nishvault x402 Pre-Send Guard
Machine-readable discovery for Nishvault read-only Base preflight and public-page evidence services.
Indexed from this operator's public /.well-known/x402.json. Found is not operator-owned and is not attested. Claim or opt out.
Agent Read · Cleared Index
ROUTE
Read-only preflight simulation endpoint with metered pricing and valid manifest, but no settlement history or identity verification.
confidence
78%
source
elevated
Index before you pay. Same payload for agents:
GET /api/cleared/agent-read?slug=nishvault-x402-pre-send-guard-1my2
When to call
- Before submitting a transaction to Base mainnet
- When you need a low-cost simulation to validate transaction outcomes
- If your agent requires public-page evidence services
Risks
- No settlement history or payment volume data available
- Operator identity not verified
- Receipt settlement check failed
- Metered pricing lacks upfront cost clarity
Price posture
metered
Category · Gateway
other
Endpoint hints
POST /simulate/transaction-preflightReturns a $0.01 Base USDC x402 v2 payment challenge when called without payment. Simulates only, never broadcasts.
Evidence (Cleared)
- → Intake verified · Gateway-eligible
- → Trust 70/100 · pass · tier listed
- → Protocol x402
- → Manifest reachable · schema valid
- → Found listing — indexed from public x402.json, not operator-attested.
Endpoints
Run a paid pre-send transaction simulation
MeteredPOST https://x402-discovery.nishvault.com/simulate/transaction-preflightReturns a $0.01 Base USDC x402 v2 payment challenge when called without payment. It simulates only and never broadcasts a transaction.
Checks
reachable
valid
2026-08-25T02:45:39.953Z
Recheck delta: +15 (55 → 70)
No settlement evidence found in chain signals.
Gateway routing
Verified (or paid Cleared) — Gateway may route this origin before pay.
Claim this listing to upgrade to Cleared attestation.
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