# FCC Census Block FIPS Lookup via Suverse Proxy

> FCC Census Block FIPS Lookup via Suverse Proxy is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.06/call, status unknown (last checked 2026-09-14).

Resolves a US latitude/longitude coordinate to its 15-digit Census block FIPS code, county, and state using the FCC Block API.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-demographics-fcc-block
- Price: $0.06/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fcc-census-block-fips-lookup-via-suverse-proxy-03f73e0d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WMfKBoHXbx42_8DZ2R3l6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fcc-census-block-fips-lookup-via-suverse-proxy-03f73e0d -d '<json body>'
```

Example prompt: What is the 15-digit Census block FIPS code, county, and state for the coordinates 40.7128° N, 74.0060° W?

## When to prefer this

Use this endpoint when you need to assign a US GPS coordinate to a Census block geography — specifically when you require the 15-digit block FIPS code, county, and state. It is the standard FCC-backed tool for this task, keyless on the upstream side, and faster than full geocoding services that return street-level data. Prefer it over general geocoding APIs when Census geography assignment is the goal rather than address resolution.

## Known failure modes

- Coordinates outside the US (no Census block exists) return an error or empty result
- Invalid or malformed lat/lon values cause a 400-level error
- Coordinates in US territories not covered by Census blocks may return null
- Network or upstream FCC API availability issues may cause timeouts

## How this service works

Resolve any US latitude/longitude to its 15-digit Census block FIPS, county, and state. Lightweight and fast, the FCC block API is the standard tool for assigning points to Census geographies. Keyless and free.

## Output

Returns the 15-digit Census block FIPS code, county name, and state for the provided US latitude/longitude point, sourced from the FCC Block API.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "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"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fcc-census-block-fips-lookup-via-suverse-proxy-03f73e0d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)