Eckari
Return the US Census Bureau geographies containing a latitude/longitude — state, county, census tract, block group, census block, incorporated place, congressional district and ZIP Code Tabulation Area — each with its FIPS or GEOID. The standard way to attach official US statistical geography to a point. Use when: Which county and census tract is this coordinate in?
OtherLiveeip155:8453Exactvia cdp
UsCensusGeographyFipsLocation
Calls · 30d
1↓ 80%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$0.54
Verified settled volume
157 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-27 22:36Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8fThe 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.
{
"x402": {
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8f",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://api.eckari.com/v1/locations/us/geographies",
"tags": [
"us",
"census",
"geography",
"fips",
"location"
],
"iconUrl": "https://eckari.com/icon-512.png",
"mimeType": "application/json",
"description": "Return the US Census Bureau geographies containing a latitude/longitude — state, county, census tract, block group, census block, incorporated place, congressional district and ZIP Code Tabulation Area — each with its FIPS or GEOID. The standard way to attach official US statistical geography to a point. Use when: Which county and census tract is this coordinate in?",
"serviceName": "Eckari"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"lat": 38.8977,
"lon": -77.0365
}
},
"output": {
"type": "json",
"example": {
"data": {
"zcta": {
"geoid": "20006"
},
"block": {
"geoid": "110019800001034"
},
"place": {
"name": "Washington city",
"geoid": "1150000"
},
"query": {
"lat": 38.8977,
"lon": -77.0365
},
"state": {
"fips": "11",
"name": "District of Columbia",
"usps": "DC"
},
"tract": {
"name": "Census Tract 9800",
"geoid": "11001980000"
},
"county": {
"fips": "11001",
"name": "District of Columbia"
},
"vintage": "Current_Current",
"benchmark": "Public_AR_Current",
"block_group": {
"geoid": "110019800001"
},
"congressional_district": {
"name": "Delegate District (at Large)",
"geoid": "1198"
}
},
"meta": {
"source": "census_geocoder",
"version": "2.0.0",
"freshness": "live",
"capability": "location.us.geographies"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Latitude in decimal degrees (WGS 84), e.g. 38.8977."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Longitude in decimal degrees (WGS 84), negative in the western hemisphere, e.g. -77.0365."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"routeTemplate": "/v1/locations/us/geographies"
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
"error": {
"code": "PAYMENT_REQUIRED",
"details": {
"rail": "x402",
"price": "0.003",
"network": "eip155:8453",
"currency": "USD",
"input_validation": {
"code": "INVALID_INPUT",
"issues": [
{
"path": "lat",
"message": "Invalid input: expected number, received undefined"
},
{
"path": "lon",
"message": "Invalid input: expected number, received undefined"
}
],
"message": "Input validation failed"
}
},
"message": "Payment required. Retry with a valid payment proof header. Note: the request input is also invalid; see details.input_validation.",
"request_id": "req_e6ab68947b6a40b5d3c40d95"
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0x9d6b…83C8f. The signed payment is good for 1 minute.
- Paid to
- 0x9d6b…83C8f
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 3000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8f",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"lat": 38.8977,
"lon": -77.0365
}
},
"output": {
"type": "json",
"example": {
"data": {
"zcta": {
"geoid": "20006"
},
"block": {
"geoid": "110019800001034"
},
"place": {
"name": "Washington city",
"geoid": "1150000"
},
"query": {
"lat": 38.8977,
"lon": -77.0365
},
"state": {
"fips": "11",
"name": "District of Columbia",
"usps": "DC"
},
"tract": {
"name": "Census Tract 9800",
"geoid": "11001980000"
},
"county": {
"fips": "11001",
"name": "District of Columbia"
},
"vintage": "Current_Current",
"benchmark": "Public_AR_Current",
"block_group": {
"geoid": "110019800001"
},
"congressional_district": {
"name": "Delegate District (at Large)",
"geoid": "1198"
}
},
"meta": {
"source": "census_geocoder",
"version": "2.0.0",
"freshness": "live",
"capability": "location.us.geographies"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Latitude in decimal degrees (WGS 84), e.g. 38.8977."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Longitude in decimal degrees (WGS 84), negative in the western hemisphere, e.g. -77.0365."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"routeTemplate": "/v1/locations/us/geographies"
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-27 22:36Z
- Last indexed by Roundhouse
- 2026-09-24 12:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 21:45Z
- x402 version
- 2
- Max timeout
- 60s
- 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 Eckari 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=Eckari' 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://api.eckari.com/v1/locations/us/geographies, 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.