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2s ISO 639 Language Code Lookup
x402
2s ISO 639 Language Code Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0012/call, status unknown (last checked 2026-09-15).
Looks up ISO 639 language codes (alpha-2 and alpha-3) by code or language name
Price / call$0.0012
Success—
StatusUnknown
How this service works
Look up an ISO 639 language. Pass code in any form — 639-1 (en), 639-2/B (ger) or 639-2/T (deu) — or name (English, partial match). Returns the English name and all sibling codes (alpha-2, alpha3-B, alpha3-T), so you can normalize a messy language tag to canonical ISO identifiers and resolve the bibliographic-vs-terminological alpha-3 split (e.g. German = de / deu / ger). Bundled authoritative ISO 639 data.
Output
Returns a JSON object with a found boolean, the original query (code or name), source attribution, and an array of matched languages each containing the English name, alpha-2 code, alpha-3/B code, and alpha-3/T code.
Example use cases
Example prompt
“What are the ISO 639-1 and ISO 639-2 codes for German? I need both the alpha-2 and alpha-3 variants.”
Technical details
Endpoint
GEThttps://2s.io/api/iso/languageWhen to prefer
Use this endpoint when you need authoritative ISO 639 language code lookups without managing a local dataset or signing up for a service — particularly useful for internationalization pipelines, locale validation, or enriching language metadata. Pay-per-call USDC pricing makes it suitable for low-volume or on-demand agent use cases.
Side effects
- No match found: found=false with empty languages array when code or name doesn't match any ISO 639 entry
- Ambiguous partial name match: may return multiple language entries when name is non-specific
- Invalid code format: passing a code that isn't ISO 639-1 or 639-2 may return no results
- Missing parameters: if neither code nor name is provided the API may return an error or empty result
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"code": "en"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"found": true,
"query": {
"code": "en",
"name": null
},
"source": {
"url": "https://www.iso.org/iso-639-language-code",
"license": "Public domain (ISO 639 code list; data via datasets/language-codes, PDDL)",
"provider": "ISO 639 language codes (bundled; datasets/language-codes)"
},
"languages": [
{
"name": "English",
"alpha2": "en",
"alpha3b": "eng",
"alpha3t": null
}
]
},
"meta": {
"cost": {
"usd": 0.0012,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "iso.language",
"settlement": {
"txHash": "0xb07eb7058aa0aae30f4b2ad7f504c1170ee2bfa7e71c8a16604b2068b6806b89",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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