POSTorigin reachablediscovery only

postcode-api-production.up.railway.app /lookup/address APIPOST /lookup/address · x402 API by postcode-api-production.up.railway.app

Search UK postcodes by free-text address or place query; returns up to 100 matching postcode records.

https://postcode-api-production.up.railway.app/lookup/address

What does this x402 API do?

postcode-api-production.up.railway.app /lookup/address API. This is an x402-gated POST API resource from postcode-api-production.up.railway.app. TOLL·402 did not invoke this route automatically because doing so was not considered safe. No normalized USD price is recorded; the listing names Base. No settled paid call has been verified.

Published price
No normalized USD price is recorded
Networks
Base
Latest evidence
TOLL·402 did not invoke this route automatically because doing so was not considered safe
Resource ID
cadd5ac4b1425da3f84c22b6
USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE
AI CODING TOOLS
quote-check.ts
const response = await fetch("https://postcode-api-production.up.railway.app/lookup/address", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
  "type": "http",
  "method": "POST",
  "bodyType": "json",
  "bodyFieldNames": [
    "limit",
    "query"
  ],
  "pathParamNames": [],
  "queryParamNames": []
}),
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

Review the provider input schema before running this non-read-only method. No payment code is included.

STATUS HISTORY

  1. Exact route checked

    not safely testable · potentially-mutating-method:POST

  2. Origin reachable

    OPTIONS https://postcode-api-production.up.railway.app/ returned 405.

  3. Observed in cdp-bazaar

    The registry record was observed and retained with provenance.

What evidence supports this listing?

cdp-bazaarobserved 2026-08-11 · open source record ↗
origin checkOPTIONS https://postcode-api-production.up.railway.app/ → 405 on 2026-08-15
route quotenot invoked automatically · potentially-mutating-method:POST · 2026-08-15

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →

Which networks and payment options does it accept?

The normalized listing price is No normalized USD price is recorded. Raw protocol requirements remain visible below for implementation and audit use.

Baseexact1000 atomic · 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
postcode-api-production.up.railway.app POST · cadd5a x402 API · TOLL·402