# Punycode Decode

> Punycode Decode is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Decodes a punycode-encoded string (e.g. internationalized domain name ACE form) into its Unicode representation, with no network calls or LLM involvement.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/punycode-decode?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/punycode-decode-4d965304
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cDygO9Fc_8Q29R4-eaO9P

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 punycode-decode-4d965304 -d '<json body>'
```

Example prompt: Can you decode this punycode string for me: 'xn--bcher-kva.example.com' — I need to know what Unicode domain name it represents?

## When to prefer this

Use this endpoint when you need a deterministic, offline punycode-to-Unicode conversion without any LLM interpretation or external network dependencies. Prefer the unpaid sandbox at POST /v1/sandbox/punycode-decode if available; use this paid endpoint only when the sandbox is unavailable or rate-limited.

## Known failure modes

- Invalid or malformed punycode input returns an error
- Empty input rejected (minLength: 1)
- Input exceeding 100,000 characters rejected
- Non-punycode plain text may be returned as-is or cause decoding errors

## How this service works

Call when an agent needs text decoded with punycode. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/punycode-decode first.

## Output

Returns the Unicode-decoded representation of the provided punycode-encoded input string, computed locally without any network or LLM calls.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "examples": [
    "xn--mnchen-3ya.de"
   ],
   "maxLength": 100000,
   "minLength": 1,
   "description": "Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/punycode-decode-4d965304/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)