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KushBitx AgentProof — Transaction Preflight & Risk Screening
x402
KushBitx AgentProof — Transaction Preflight & Risk Screening is a paid API for AI agents from kushbitx.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-12).
Screens a Base blockchain transaction for token risks and simulates execution before an AI agent or user submits payment, returning a safety verdict.
Price / call$0.05
Success—
StatusUnknown
How this service works
Free protected spending policies for AI agents, plus pay-per-call Base transaction preflight, token risk and USDC payment verification. JavaScript SDK available on npm.
Output
Returns a JSON object with a verdict containing a numeric risk score, a decision (e.g. ALLOW or BLOCK), and a confidence level (e.g. high/medium/low), plus a findings array listing specific risk signals, a simulation object with execution results, and a destination object with metadata about the target address.
Example use cases
DeFi swap safety check
“I'm about to do a token swap on Base — the destination is 0x1234...abcd and the calldata is 0xa9059cbb...0001. Can you screen this transaction for token risks and tell me if it's safe before I sign?”
AI agent payment guard
“My agent is about to pay 0.1 ETH to 0xDeAdBeEf...9900 on Base as part of an automated workflow. Run a preflight simulation and risk score on it first — only proceed if the verdict is ALLOW.”
Unknown contract interaction review
“I found this contract at 0xFeeD...C0de on Base and want to call it with data 0x12345678. Before I do anything, can you simulate the transaction and check if there are any red flags or risks?”
Technical details
Endpoint
POSThttps://kushbitx.com/api/transaction-preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent or automated system needs to verify the safety of a Base blockchain transaction before executing it — especially when dealing with unknown contract addresses, user-submitted calldata, or autonomous payment flows where a bad transaction could cause financial loss. Prefer this over generic block explorers when you need a machine-readable risk verdict with confidence scoring and simulation results in a single call.
Side effects
- Invalid Ethereum address format returns a validation error
- Malformed or non-hex calldata rejected with schema error
- Unsupported chain (non-Base) returns an enum validation error
- Transaction simulation failure due to insufficient gas or reverted call
- Destination contract unverified or unavailable on-chain may reduce confidence
- Network or RPC timeout returns a service error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Transaction destination. |
| data | string | Unsigned calldata. |
| from | string | Optional sender used for simulation. |
| chain | string | |
| valueWei | string | Native ETH value in wei. |
Output
Schema · Response
{
"type": "json",
"example": {
"verdict": {
"score": 0,
"decision": "ALLOW",
"confidence": "high"
},
"findings": [],
"simulation": {},
"destination": {}
}
}Tags
x402
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