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ScanPay — Blockchain Transaction Preflight Security Scanner
x402
ScanPay — Blockchain Transaction Preflight Security Scanner is a paid API for AI agents from scanpay-ob3w.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-31).
Simulates and security-scans a blockchain transaction before broadcast, returning risk findings and an allow/deny execution gate verdict.
Price / call$0.05
Success—
StatusUnknown
How this service works
Deterministic AST code security scanner with x402 Solana micropayments, remote MCP, and ERC-8183 Evaluator oracle.
Output
Returns a JSON object with a 'findings' array listing any detected security issues, and an 'execution_gate' object containing a verdict ('ALLOW' or 'DENY'), a numeric risk_score, and an allow_broadcast boolean indicating whether it's safe to proceed.
Example use cases
DeFi swap safety check
“I'm about to send a token swap transaction on Base — the 'to' address is 0xDEF...456 and here's the calldata. Can you run a preflight security scan on it and tell me the risk score before I broadcast?”
Solana program call validation
“I have a set of Solana instructions I want to submit — can you simulate them through ScanPay's security oracle to check for any findings and confirm I have a green light to execute?”
Smart contract interaction pre-check
“Before my agent submits this Ethereum transaction calling a new DeFi protocol, run a security preflight on it — I need to know the verdict and whether there are any high-risk findings in the calldata.”
Technical details
Endpoint
POSThttps://scanpay-ob3w.onrender.com/api/v1/preflight/simulate?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent or autonomous system needs a deterministic, oracle-backed security verdict on a blockchain transaction before broadcasting — especially in automated DeFi workflows where human review is absent. It is particularly valuable for multi-chain agents operating on Base, Ethereum, or Solana that need a programmatic go/no-go signal with a structured risk score rather than a heuristic guess.
Side effects
- Missing required 'tx' or 'chain' fields returns a validation error
- Unsupported chain value (not 'base', 'ethereum', or 'solana') causes rejection
- Malformed transaction object structure returns a parse error
- Payment failure via x402 micropayment protocol blocks the request
- Service unavailability on the Render-hosted instance may cause timeouts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| txrequired | object | Transaction object ({to, data, value} or {instructions}) |
| chainrequired | string | Target chain: 'base', 'ethereum', or 'solana' |
Output
Schema · Response
{
"type": "json",
"example": {
"findings": [],
"execution_gate": {
"verdict": "ALLOW",
"risk_score": 0,
"allow_broadcast": true
}
}
}Tags
x402
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