Punycode IDN Converter
Punycode converter: convert internationalised domain names between Unicode and ASCII punycode in either direction, label by label, and validate each label against IDNA2008: length, leading and trailing hyphens, the hyphen-hyphen rule at positions 3 and 4, disallowed code points and bidirectional rules. Returns both forms, the per-label breakdown and the first rule violated. Strict mode is IDNA2008 (UTS 46 non-transitional); it may reject names /v1/code/url displays.
Offering
- Provider
- api.duoleads.com
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- General Utilities
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://api.duoleads.com/v1/code/idn- MIME type
- application/json
- First seen
- 2026-10-16T01:50:38.788Z
- Last seen
- Tags
- punycode, idn, idna, domains, code
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "50000",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39"
}
]Observed health
- Status
- Healthy
- Latest latency
- 89 ms
- Average latency
- 743 ms
- HTTP status
- 402
- Last checked
- Reachability
- 100% over 14 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "Domain name in Unicode or punycode form.",
"maxLength": 512
},
"to": {
"type": "string",
"description": "ascii, unicode or both (default). Validated only: the response always carries both forms.",
"enum": [
"ascii",
"unicode",
"both"
],
"maxLength": 64,
"default": "both"
},
"strict": {
"type": "string",
"description": "true (default) applies IDNA2008 strictly; false uses UTS 46 transitional (IDNA2003-compatible) processing, which maps e.g. ß to ss; current browsers and /v1/code/url use non-transitional processing, so its output can differ from them.",
"enum": [
"true",
"false"
],
"maxLength": 64,
"default": "true"
}
},
"required": [
"domain"
]
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"domain": {
"description": "Domain name in Unicode or punycode form.",
"maxLength": 512,
"type": "string"
},
"strict": {
"default": "true",
"description": "true (default) applies IDNA2008 strictly; false uses UTS 46 transitional (IDNA2003-compatible) processing, which maps e.g. ß to ss; current browsers and /v1/code/url use non-transitional processing, so its output can differ from them.",
"enum": [
"true",
"false"
],
"maxLength": 64,
"type": "string"
},
"to": {
"default": "both",
"description": "ascii, unicode or both (default). Validated only: the response always carries both forms.",
"enum": [
"ascii",
"unicode",
"both"
],
"maxLength": 64,
"type": "string"
}
},
"required": [
"domain"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"ascii": {
"type": [
"string",
"null"
]
},
"labels": {
"items": {
"properties": {
"ascii": {
"type": [
"string",
"null"
]
},
"index": {
"type": "integer"
},
"length": {
"type": [
"integer",
"null"
]
},
"punycoded": {
"type": "boolean"
},
"reason": {
"type": [
"string",
"null"
]
},
"unicode": {
"type": "string"
},
"valid": {
"type": "boolean"
}
},
"required": [
"index",
"unicode",
"ascii",
"length",
"punycoded",
"valid",
"reason"
],
"type": "object"
},
"type": "array"
},
"reason": {
"type": [
"string",
"null"
]
},
"total_length": {
"type": [
"integer",
"null"
]
},
"unicode": {
"type": [
"string",
"null"
]
},
"valid": {
"type": "boolean"
}
},
"required": [
"ascii",
"unicode",
"valid",
"labels",
"reason",
"total_length"
],
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/code/idn"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}