code402 / tools / rental-listing-risk

Rental Listing Risk & Fraud Engine — pay-per-call API

$0.02 per call · 20 free calls/day · no signup · pay with card credits or a signed USDC voucher (x402)

Explainable tenancy fraud risk score evaluated across irreversible payment demands, off-platform pressure, stolen photos, and advance wire signals. Deterministic rule engine.

Honest scope: Deterministic rule engine over the signals you pass in: it flags documented fraud patterns with an explainable score. It is not an appraisal, a registry lookup, or a guarantee.

Try it (first 20 calls/day free)

curl -X POST https://code402.dev/v1/tools/rental-listing-risk/call \
  -H "content-type: application/json" \
  -d '{"payment_irreversible":true,"no_in_person_viewing":true,"price_below_market_pct":45}'

No key needed for the free tier. When the free quota is used up, the API replies HTTP 402 with the exact price — agents sign the x402 voucher and retry; humans buy card credits. Every paid response carries a signed receipt you can verify offline.

Run it in the playground (free)Pay by card — credits, no crypto

Input parameters

FieldTypeMeaning
payment_irreversiblebooleanPaid via crypto/gift-card/wire-only.
contact_moves_offplatformbooleanPushed off the listing platform.
landlord_abroad_cannot_meetbooleanLandlord 'abroad', can't meet in person.
no_in_person_viewingbooleanNo viewing before payment.
urgency_pressurebooleanPressure to secure today.
photos_reverse_image_hitbooleanListing photos found elsewhere (stolen).
identity_docs_requested_upfrontbooleanFull ID/bank docs demanded upfront.
price_below_market_pctnumberHow far below local market the rent is asked, in percent.

Response

Top-level fields: tool, risk_score, band, flags, flags_fired, recommendation, scope. Paid responses also carry a signed XDR-1 receipt.

All code402 tools

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Machine-readable catalog: llms-full.txt · MCP manifest · OpenAPI. Operated by JUANA LIMITED (UK Co. No. 14043409). Non-custodial: USDC settles payer→seller directly on Base.