# classifier.dev MCP server

> Classifies up to 1,000 texts into your own labels, returning a label and calibrated confidence per item.

- Repository: https://github.com/mrmps/classifier-dev
- Page: https://hostedmcp.org/servers/mrmps/classifier-dev
- Transport: remote
- Stars: 439
- License: MIT
- Latest version: 1.0.0

## Install

### Claude Code

```sh
claude mcp add --transport http classifier-dev https://classifier.dev/mcp
```

### Cursor (`~/.cursor/mcp.json`)

```json
{
  "mcpServers": {
    "classifier-dev": {
      "url": "https://classifier.dev/mcp"
    }
  }
}
```

### VS Code (`.vscode/mcp.json`)

```json
{
  "servers": {
    "classifier-dev": {
      "type": "http",
      "url": "https://classifier.dev/mcp"
    }
  }
}
```

### VS Code CLI

```sh
code --add-mcp '{"name":"classifier-dev","type":"http","url":"https://classifier.dev/mcp"}'
```

### Codex

```sh
codex mcp add classifier-dev --url https://classifier.dev/mcp
```

### Codex config.toml (`~/.codex/config.toml`)

```toml
[mcp_servers.classifier-dev]
url = "https://classifier.dev/mcp"
```

### Gemini CLI

```sh
gemini mcp add -s user --transport http classifier-dev https://classifier.dev/mcp
```

### Gemini settings.json (`~/.gemini/settings.json`)

```json
{
  "mcpServers": {
    "classifier-dev": {
      "url": "https://classifier.dev/mcp",
      "type": "http"
    }
  }
}
```

## FAQ

### Do I need an API key to use classifier.dev?

No. The service requires no key and no signup; you call it with a plain HTTP request.

### How many texts can I classify in one request?

Up to one thousand texts per request, packed into a single upstream call.

### What does the confidence score mean?

The score is a calibrated probability: high-confidence answers are right far more often than low-confidence ones.

### Does classifier.dev support multi-label classification?

Yes. It asks one yes/no question per label and returns labels scoring at least 0.7, most likely first, with the full score map.

### Is there a command-line client?

Yes, the classify command ships as the classifier-dev npm package and talks to the API the same way curl does.