# Polyform US Address Geocoder

> Polyform US Address Geocoder is a paid API for AI agents from polyform.polyform-org.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Converts a US street address into geographic coordinates and returns a matched, normalized address using the US Census Bureau geocoder.

## Facts

- Endpoint: GET https://polyform.polyform-org.workers.dev/v1/geo/geocode
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polyform-us-address-geocoder-3979406e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ygZCS1zo-CHsONEA8cqY6

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 polyform-us-address-geocoder-3979406e
```

Example prompt: Can you geocode the address 1600 Pennsylvania Avenue NW, Washington DC 20500 and give me the latitude, longitude, and the matched normalized address from the Census Bureau?

## When to prefer this

Choose this endpoint when you need authoritative, government-sourced geocoding of US street addresses with normalized address output. It is ideal for applications requiring Census-grade accuracy, address standardization alongside coordinate lookup, or when you want a cost-effective ($0.002/call) geocoding option that doesn't require a Google Maps or similar commercial API key. Prefer this over commercial geocoders when US-only coverage is acceptable and Census Bureau authority is valued.

## Known failure modes

- Address not found or unmatched by Census geocoder — returns no result or empty match
- Non-US addresses are not supported; international addresses will fail or return no match
- Ambiguous or incomplete addresses may return a low-confidence or wrong match
- Malformed input query may return a 400 error
- Service downtime or upstream Census Bureau API unavailability causing 5xx errors

## How this service works

US street address to coordinates plus matched/normalized address. Source: US Census Bureau geocoder. JSON.

## Output

Returns a JSON object containing the geographic coordinates (latitude and longitude) of the matched address along with the normalized/matched address string as parsed and confirmed by the US Census Bureau geocoder. Useful for mapping, routing, and address standardization workflows.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "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/polyform-us-address-geocoder-3979406e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polyform.polyform-org.workers.dev](https://www.zero.xyz/host/polyform.polyform-org.workers.dev/llms.txt)