Docs/APIs/Language Detector

Language Detector

Detect language from text

OperationalCredits 2 per callp50 1508msAI/Computer VisionStar

Overview

Language Detector works by analyzing the text and comparing it to a database of languages and ai models. It uses advanced algorithms to detect the language of the text and returns the language code and the confidence level.

Endpoint

One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.

POSThttps://api.apiverve.com/v1/languagedetector
curl -X POST https://api.apiverve.com/v1/languagedetector \
  -H "x-api-key: your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
  "text": "esta es una frase en español. esta API puede detectar fácilmente el idioma"
}'

Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.

Authentication

Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Parameters

Sent as JSON in the request body. Premium parameters are accepted on every plan but only take effect on plans that include them.

ParameterTypeDescription
textRequiredstringThe text to detect the language of

Response

Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.

Sample response
{
  "status": "ok",
  "error": null,
  "data": {
    "primaryLanguage": "spanish",
    "primaryCode": "es",
    "confidenceLevel": "medium",
    "detectedLanguages": [
      {
        "language": "spanish",
        "confidence": 0.38471794871794873,
        "code": "es"
      },
      {
        "language": "portuguese",
        "confidence": 0.2946153846153846,
        "code": "pt"
      },
      {
        "language": "danish",
        "confidence": 0.2464615384615384,
        "code": "da"
      }
    ]
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

FieldTypeExampleDescription
primaryLanguagestring"spanish"The most likely detected language
primaryCodestring"es"ISO 639-1 code of the primary language
confidenceLevelPremiumstring"medium"Overall confidence level: high, medium, or low
detectedLanguagesarray[3]Every candidate language considered, ranked from most to least likely
languagestring"spanish"The candidate language's full name
confidencenumber0.38471794871794873How strongly the sample matched this language's trigram frequencies, from 0 to 1
codestring"es"ISO 639-1 code of this candidate language

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.

StatusMeaningWhat to do
400Input was rejectedRead error; it names the parameter.
401Key missing or invalidCheck the header name and the key value.
403Key valid, but not permittedA key restriction or IP allow-list; see key scoping.
429Rate limited, or out of creditsRead error to tell them apart; see rate limits.

Use cases

Inbound Ticket Dispatch
When an international customer submits a support ticket, help desks inspect the text to route the ticket to native-speaking agents.
Voice Synthesizer Selection
To read articles aloud with correct accents, screen readers check the language code before choosing a matching text-to-speech voice model.
Search Stemmer Configuration
Tag document uploads with ISO language codes during ingest so search engines apply the correct grammatical stemming rules for each language.
Market Research Segmentation
Analytics teams group raw global survey responses by primary language before running regional sentiment and feedback models.

Other ways to use Language Detector

Set up Language Detector on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.VerveKitReference →
Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheetsReference →
Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContextReference →

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