postcode-api-production.up.railway.app
Search UK postcodes by free-text address or place query; returns up to 100 matching postcode records.
SearchLiveeip155:8453Exactvia cdp
Calls · 30d
3↑ 8.3%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$3.83
Verified settled volume
1,836 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-14 20:00Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://postcode-api-production.up.railway.app/lookup/address",
"description": "Search UK postcodes by free-text address or place query; returns up to 100 matching postcode records."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"limit": 10,
"query": "Buckingham Palace"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"count": 1,
"query": "Buckingham Palace",
"results": [
{
"ccg": "NHS North West London",
"lsoa": "Westminster 018C",
"msoa": "Westminster 018",
"nuts": "Westminster",
"codes": {
"admin_ward": "E05013806",
"admin_district": "E09000033"
},
"incode": "1AA",
"parish": "Westminster, unparished area",
"region": "London",
"country": "England",
"outcode": "SW1A",
"quality": 1,
"latitude": 51.501009,
"postcode": "SW1A 1AA",
"longitude": -0.141588,
"admin_ward": "St James's",
"admin_county": null,
"admin_district": "Westminster",
"primary_care_trust": "Westminster",
"date_of_introduction": "198001",
"european_electoral_region": "London",
"parliamentary_constituency": "Cities of London and Westminster"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"query"
],
"properties": {
"limit": {
"type": "integer",
"maximum": 100,
"minimum": 1,
"description": "Maximum number of matching postcodes to return (1-100, default 10)."
},
"query": {
"type": "string",
"description": "Free-text address or place query to match against UK postcodes."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "integer"
},
"query": {
"type": "string"
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"ccg": {
"type": [
"string",
"null"
]
},
"lsoa": {
"type": [
"string",
"null"
]
},
"msoa": {
"type": [
"string",
"null"
]
},
"nuts": {
"type": [
"string",
"null"
]
},
"codes": {
"type": "object"
},
"incode": {
"type": "string"
},
"parish": {
"type": [
"string",
"null"
]
},
"region": {
"type": [
"string",
"null"
]
},
"country": {
"type": "string"
},
"outcode": {
"type": "string"
},
"quality": {
"type": "integer"
},
"latitude": {
"type": [
"number",
"null"
]
},
"postcode": {
"type": "string"
},
"longitude": {
"type": [
"number",
"null"
]
},
"admin_ward": {
"type": [
"string",
"null"
]
},
"admin_county": {
"type": [
"string",
"null"
]
},
"admin_district": {
"type": [
"string",
"null"
]
},
"primary_care_trust": {
"type": [
"string",
"null"
]
},
"date_of_introduction": {
"type": [
"string",
"null"
]
},
"european_electoral_region": {
"type": [
"string",
"null"
]
},
"parliamentary_constituency": {
"type": [
"string",
"null"
]
}
}
},
"description": "Matching postcode records; each matches the /lookup/postcode result shape."
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.001USDC≈ $0.001 USD
on Base · exact scheme
Pay 0.001 USDC on Base to 0xFFc4…537b1. The signed payment is good for 5 minutes.
- Paid to
- 0xFFc4…537b1
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"limit": 10,
"query": "Buckingham Palace"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"count": 1,
"query": "Buckingham Palace",
"results": [
{
"ccg": "NHS North West London",
"lsoa": "Westminster 018C",
"msoa": "Westminster 018",
"nuts": "Westminster",
"codes": {
"admin_ward": "E05013806",
"admin_district": "E09000033"
},
"incode": "1AA",
"parish": "Westminster, unparished area",
"region": "London",
"country": "England",
"outcode": "SW1A",
"quality": 1,
"latitude": 51.501009,
"postcode": "SW1A 1AA",
"longitude": -0.141588,
"admin_ward": "St James's",
"admin_county": null,
"admin_district": "Westminster",
"primary_care_trust": "Westminster",
"date_of_introduction": "198001",
"european_electoral_region": "London",
"parliamentary_constituency": "Cities of London and Westminster"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"query"
],
"properties": {
"limit": {
"type": "integer",
"maximum": 100,
"minimum": 1,
"description": "Maximum number of matching postcodes to return (1-100, default 10)."
},
"query": {
"type": "string",
"description": "Free-text address or place query to match against UK postcodes."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"count": {
"type": "integer"
},
"query": {
"type": "string"
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"ccg": {
"type": [
"string",
"null"
]
},
"lsoa": {
"type": [
"string",
"null"
]
},
"msoa": {
"type": [
"string",
"null"
]
},
"nuts": {
"type": [
"string",
"null"
]
},
"codes": {
"type": "object"
},
"incode": {
"type": "string"
},
"parish": {
"type": [
"string",
"null"
]
},
"region": {
"type": [
"string",
"null"
]
},
"country": {
"type": "string"
},
"outcode": {
"type": "string"
},
"quality": {
"type": "integer"
},
"latitude": {
"type": [
"number",
"null"
]
},
"postcode": {
"type": "string"
},
"longitude": {
"type": [
"number",
"null"
]
},
"admin_ward": {
"type": [
"string",
"null"
]
},
"admin_county": {
"type": [
"string",
"null"
]
},
"admin_district": {
"type": [
"string",
"null"
]
},
"primary_care_trust": {
"type": [
"string",
"null"
]
},
"date_of_introduction": {
"type": [
"string",
"null"
]
},
"european_electoral_region": {
"type": [
"string",
"null"
]
},
"parliamentary_constituency": {
"type": [
"string",
"null"
]
}
}
},
"description": "Matching postcode records; each matches the /lookup/postcode result shape."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-14 20:00Z
- Last indexed by Roundhouse
- 2026-09-24 08:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 09:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service postcode-api-production.up.railway.app and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=postcode-api-production.up.railway.app' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://postcode-api-production.up.railway.app/lookup/address, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.