Language codes

Every language value on this API is a lowercase BCP-47 tag. Matching is exact string equality, not “close enough”.

Use these:

en-us
ja-jp
pt-br
es-la
zh-cn

Do not send these. Only Japanese is rejected outright — the other two are normalised on our side today, but that is not part of the contract and may stop working:

Avoid	Why
`ja`	Bare ISO-639. Resolves today by normalisation, not guaranteed
`ja-JP`	Mixed case. Resolves today by normalisation, not guaranteed
`Japanese`	Language name. Rejected

name from the languages list is for display only. Never send it as a code.

Where codes appear

source_language_code — required on POST /v1/projects
target_language_codes — array of tags on create
Responses — same lowercase bcp47 values

List supported languages

Any valid key works. No extra scope.

curl -s https://api-arbitr.straker.ai/v1/languages \
  -H "X-API-Key: abr_live_…"

200:

{
  "languages": [
    { "bcp47": "en-us", "name": "English (United States)" },
    { "bcp47": "fr-fr", "name": "French (France)" }
  ],
  "page": {
    "number": 1,
    "has_more": false,
    "limit": 2
  }
}

Pass languages[].bcp47 into create-project. If a tag is not in this list, do not invent one — add the language in arbitr first, or pick another tag from the list.

Identifiers

Workflows & credits