# AgentToll Postal Lookup

> AgentToll Postal Lookup is a paid API for AI agents from agenttoll.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Looks up geographic and administrative data for a postal code in a given country

## Facts

- Endpoint: POST https://agenttoll.dev/paid/gov/postal-lookup
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-postal-lookup-65414710
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WO_9scnj5k2ajkCbbk9sC

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 agenttoll-postal-lookup-65414710 -d '<json body>'
```

Example prompt: Can you look up what city and region postal code 90210 is in for the US?

## When to prefer this

Choose this endpoint when you need to resolve a postal code to city/region data for any supported country, especially in agentic workflows where per-call micropayments via USDC on Base are acceptable. It is well-suited for address enrichment, shipping validation, or geographic lookups across multiple countries without needing a dedicated geocoding API subscription.

## Known failure modes

- Invalid or non-existent postal code returns error or empty result
- Unsupported country code may yield no data
- Malformed country code (not 2-letter ISO) causes validation error
- Payment failure via x402 prevents the call from executing
- Postal code format mismatch for the given country (e.g. wrong length) may return no match

## How this service works

108+ receipt-backed x402 work products for AI agents. Clear prices, spend caps, buyer metadata, and structured results over Base USDC.

## Output

Returns geographic and administrative data for the given postal code, including city name, state or region, and potentially geographic coordinates. The response is a JSON object with location fields derived from official postal data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "country": {
   "type": "string",
   "description": "2-letter ISO code e.g. US, GB, DE"
  },
  "postal_code": {
   "type": "string",
   "description": "string postal code"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-postal-lookup-65414710/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.dev](https://www.zero.xyz/host/agenttoll.dev/llms.txt)