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TxSim Safe-to-Sign Checker
x402
TxSim Safe-to-Sign Checker is a paid API for AI agents from simulate.cyberwarex.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns a single pre-sign safety verdict (GREEN, REVIEW, or BLOCK) by fusing transaction simulation, address risk screening, URL phishing detection, and token safety checks for EVM wallet agents.
Price / call$0.02
Success—
StatusUnknown
How this service works
One pre-sign safety verdict (GREEN, REVIEW or BLOCK) fusing transaction, signature, address, URL and token checks for AI wallet agents.
Output
A single verdict label (GREEN, REVIEW, or BLOCK) along with supporting risk signals covering the transaction simulation outcome, address risk screening result, URL phishing assessment, and token safety flags — giving an AI wallet agent a fused go/no-go decision before a user signs.
Example use cases
DeFi approval safety gate
“I'm about to approve a token spend to 0xDEF456... on Base with calldata 0xa9059cbb... — check if this is safe to sign before I confirm it.”
Phishing URL check before wallet connect
“A dApp is asking me to connect my wallet via this URL: https://uniswap-airdrop-claim.xyz — can you check if it's a phishing site before I proceed?”
EIP-712 typed data verification
“My wallet is showing an EIP-712 sign request with this typed data JSON — can you verify it's safe and not a permit drain or scam signature?”
Technical details
Endpoint
GEThttps://simulate.cyberwarex.com/safe-to-signWhen to prefer
Use this endpoint when an AI wallet agent needs a single fused pre-sign safety decision rather than calling separate services for transaction simulation, address screening, URL phishing, and token checks individually. It is best suited for real-time, per-transaction gating in agentic DeFi or wallet automation pipelines where a fast go/no-go verdict is required before user signature.
Side effects
- Invalid or malformed 'to' address returns an error or inconclusive verdict
- Unsupported chain identifier causes a validation error
- Malformed calldata hex (non-0x prefix or odd length) results in decode failure
- Missing required 'to' field may return an incomplete analysis
- Unknown or very new contract addresses may yield insufficient data for a confident verdict
- Network timeouts during simulation return a fallback REVIEW verdict
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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