# clonecho Country List

> clonecho Country List is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns a list of all ISO-2 country codes supported by the holiday and border crossing endpoints.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/country-list
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clonecho-country-list-a5be10f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HCD0GzrHHNAVu9rhIF5WY

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 clonecho-country-list-a5be10f7 -d '<json body>'
```

Example prompt: What countries are supported by the holiday and border crossing endpoints? Just give me the full list of ISO-2 country codes I can use.

## When to prefer this

Use this endpoint when you need to discover which countries are valid inputs before querying the holiday or border endpoints, or when you need to enumerate all supported ISO-2 codes for validation or iteration purposes.

## Known failure modes

- Service unavailable (500) if backend is down
- Payment required error (402) if USDC payment not provided
- Empty or malformed JSON if data source is temporarily unavailable

## How this service works

COUNTRIES: all ISO-2 countries supported by the holiday/border endpoints (no params). Returns JSON.

## Output

A JSON array or object containing all ISO-2 country codes (two-letter codes like 'US', 'DE', 'FR') that are valid inputs for the holiday and border crossing endpoints on the same platform.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clonecho-country-list-a5be10f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)