---
title: "Detect the language of an uploaded document"
method: POST
path: "/v2/blu_translate/auto_detect"
tags: ["translate"]
---

# Detect the language of an uploaded document

`POST /v2/blu_translate/auto_detect`

Runs LLM language+dialect detection on the cached source file of a single-file upload task. Always returns 200; detection failures carry language "invalid" with empty candidates.

## Query parameters

- `id` string, required

## Headers

- `Authorization` string, required

## Response `200`

OK

- BluenteInternalTranslateServiceAutoDetectResponse
  - `candidates` BluenteInternalTranslateServiceAutoDetectCandidate[]
    - `confidence` number
    - `evidence` string[]
    - `language` string
  - `language` string

---

[API](https://skmtc.net/bluente/apis/bluente-api.md) · [All operations](https://skmtc.net/bluente/apis/bluente-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/bluente/bluente-api/revisions/5c90e58bf672/schema)