# Detect Text Language
Detect the most likely languages in text and return confidence scores.
## API Overview
- **HTTP Protocol:** HTTPS
- **HTTP Method:** POST
- **HTTP Endpoint:** https://api.gugudata.io/v1/text/detectlanguage
- **Response Type:** application/json; charset=utf-8
- **DEMO Endpoint:** https://api.gugudata.io/v1/text/detectlanguage/demo
- **Live Demo:** https://gugudata.io/demo/nlpdetectlanguage
- **Postman:** https://www.postman.com/gugudata/gugudata-io
- **LLM Page:** https://gugudata.io/details/nlpdetectlanguage/llm
- **Raw Markdown:** https://gugudata.io/details/nlpdetectlanguage/llm.md
## Remote MCP
- **MCP Endpoint:** https://mcp.gugudata.io/mcp
- **MCP Guide:** https://gugudata.io/mcp/
- **Authorization:** OAuth authorization opens in the browser; do not paste appkeys into MCP clients.
- **Tool Scope:** MCP clients receive GuGuData API tools available to the authorized account.
## Data & API Features
- Broad language coverage: Identify more than 50 languages from submitted text.
- Ranked candidates: Receive likely languages in descending confidence order.
- Standard language codes: Use familiar lowercase language codes such as en, fr, and zh.
- Confidence scores: Compare probability values when more than one language is plausible.
- Content routing: Route multilingual content to localization, moderation, or search workflows.
- Short and long text: Analyze brief messages or longer documents within the documented size limit.
## API Request Parameters
| Name | Type | Is Required | Default Value | Remark |
| --- | --- | --- | --- | --- |
| appkey | string | true | YOUR_APPKEY | API key used to authenticate the request. |
| content | string | true | | Nonblank text to analyze, up to 100,000 characters or 512 KiB of UTF-8 data. |
## API Response Parameters
| Name | Type | Remark |
| --- | --- | --- |
| Language | string | Human-readable name of the detected language. |
| LanguageAbbr | string | Lowercase language code, such as en, fr, or zh. |
| Probability | number | Confidence score from 0 to 1 for this language candidate. |
## API Response Status Codes
| Status Code | Explanation of Status Code | Remarks |
| --- | --- | --- |
| 200 | Request processed successfully. | Some endpoints expose a separate application-level status field in the response body, such as `dataStatus.statusCode`. |
| 400 | Invalid request parameters or request format. | Check required fields, data types, and request body format. |
| 401 | Missing or unknown application key. | Provide a valid `appkey` with the request. |
| 403 | The application key is recognized but access is not allowed. | The key may be expired, inactive, or not permitted for the requested API. |
| 429 | Request rate or trial usage limit exceeded. | Reduce request frequency and retry with backoff. If a trial allowance is exhausted, check Trial Keys for remaining requests and subscribe to continue. |
| 500 | Internal service error. | Retry later or contact support if the error persists. |
| 503 | Upstream service unavailable. | Retry later; the requested upstream dependency is temporarily unavailable. |
## cURL Example
```bash
curl --location 'https://api.gugudata.io/v1/text/detectlanguage?appkey=YOUR_APPKEY' --request POST --header 'Content-Type: application/x-www-form-urlencoded' --data-urlencode 'content=YOUR_VALUE'
```