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TxGuard x402 Base API – Risk-Lite Pre-Signing Inspection
x402
TxGuard x402 Base API – Risk-Lite Pre-Signing Inspection is a paid API for AI agents from 50-7-41-26.sslip.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Performs fail-closed risk inspection on a transaction before signing, blocking high-risk transactions without ever signing, broadcasting, or bridging assets.
Price / call$0.005
Success—
StatusUnknown
How this service works
Fail-closed pre-signing risk inspection. This service never signs, broadcasts, or bridges assets.
Output
Returns a risk verdict (block or allow) along with risk flags and scores identifying the nature and severity of detected threats in the inspected transaction. The service never modifies, signs, or broadcasts the transaction — it is a read-only, fail-closed inspection result.
Example use cases
DeFi swap safety check
“I'm about to approve a token swap on a DeFi protocol — can you run a pre-signing risk check on this transaction to make sure the contract isn't malicious before I sign anything?”
Unknown contract interaction screening
“My wallet is asking me to interact with a contract I've never used before on Base — can you inspect this transaction for me and flag any risks so I know whether to proceed?”
Automated agent transaction gating
“Before my trading bot signs any transaction, I want every one screened for risk — run a fail-closed inspection on this pending transaction and block it if the risk verdict comes back high.”
Technical details
Endpoint
POSThttps://50-7-41-26.sslip.io/v1/risk-liteWhen to prefer
Choose this endpoint when you need a fast, lightweight, fail-closed risk gate before any transaction is signed by a wallet or agent — especially when operating on Base chain and paying per-call via x402. Prefer it over on-chain simulation tools when you want a security-first verdict without executing any code, and over general-purpose AML tools when the focus is pre-signing transaction safety rather than address-level compliance.
Side effects
- Malformed transaction payload returns a 400 validation error
- Unsupported chain ID results in an error or unknown verdict
- Network timeout or service unavailability triggers fail-closed behavior (defaults to block)
- Missing required transaction fields cause inspection to fail with an error response
- Ambiguous or incomplete calldata may result in a low-confidence or inconclusive risk score
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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