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Permit API – Address Verdict
x402
Permit API – Address Verdict is a paid API for AI agents from permit-api-production-7375.up.railway.app, paid per call via x402, $2/call, status unknown (last checked 2026-09-14).
Returns a decision-ready building-permit verdict plus normalized permit history and activity signals for a specific address in one of seven supported US cities
Price / call$2
Success—
StatusUnknown
How this service works
Address-level building-permit intelligence: normalized permit history + activity signals + a decision-ready verdict, sourced from official city open-data portals. Jurisdictions: san_francisco, seattle, austin, nyc
Output
A structured response containing: a decision-ready permit verdict (e.g. clear, flagged, high-risk), normalized permit history records pulled from official city open-data portals, and activity signals that summarize permit frequency, recency, and any anomalies — all scoped to the queried address and jurisdiction.
Example use cases
Pre-purchase due diligence on a home
“Before I put in an offer on 742 Evergreen Terrace in Chicago, can you check its permit history and give me a verdict on whether there are any unpermitted additions or open violations?”
Landlord compliance check for rental property
“I own a rental at 450 Broadway in Seattle — can you look up the permit record and tell me if there's anything I should be worried about from a compliance standpoint?”
Real estate agent property research
“I'm showing a listing at 321 Canal Street in New Orleans to a client tomorrow — pull the permit activity and verdict so I can answer any questions they have about the property's construction history.”
Technical details
Endpoint
GEThttps://permit-api-production-7375.up.railway.app/v1/address/:jurisdiction/verdictWhen to prefer
Choose this endpoint when you need a fast, pre-digested permit intelligence package — normalized history plus a verdict signal — for a specific US address in one of the seven supported cities. It is superior to raw open-data portal queries because it normalizes cross-city permit schemas and delivers a decision-ready verdict rather than raw records, making it ideal for real estate due diligence agents, proptech workflows, and compliance checks that need actionable output without custom data wrangling.
Side effects
- Address not found in the specified jurisdiction's open-data records — returns no results or empty permit history
- Jurisdiction not supported — endpoint only covers san_francisco, seattle, austin, nyc, chicago, los_angeles, new_orleans; invalid jurisdiction returns an error
- Malformed or ambiguous address string causing lookup failure
- Open-data portal temporarily unavailable for the requested city — may return stale or partial data
- Payment failure (x402 protocol) — call rejected if 2 USDC payment not provided
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Tags
x402
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