# Keyword Density Checker — MCP tool `findutils:keyword_density_checker`

Analyze keyword density in text and return word/sentence/paragraph counts, the top 1-gram, 2-gram, and 3-gram phrases with counts and density percentages, and (optionally) the count, density, and over/good/low status of a target keyword. Densities are percentages rounded to 2 decimals.

- Category: seo
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/keyword-density-checker/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/mcp/keyword-density-checker/
- Same tool on the other surface: https://findutils.com/api/keyword-density-checker/

## Connect

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Claude Desktop (`claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}
```

## Call the tool (verified example)

```bash
curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "keyword_density_checker",
      "arguments": {
        "content": "SEO tools help. SEO tools rank pages.",
        "target_keyword": "seo tools"
      }
    }
  }'
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `content` | string | yes | The text (or HTML, with strip_html) to analyze. |
| `target_keyword` | string | no | Optional keyword or phrase to measure. Good density is 0.5% to 3%. |
| `strip_html` | boolean | no | Remove HTML tags before analysis. Default false. Default: `false`. |
| `exclude_stop_words` | boolean | no | Skip n-grams made only of common stop words. Default true. Default: `true`. |
| `limit` | integer | no | Maximum phrases per n-gram table. Default 20. Default: `20`. |

Example arguments (verified):

```json
{
  "content": "SEO tools help. SEO tools rank pages.",
  "target_keyword": "seo tools"
}
```

## Also a REST endpoint

```bash
curl -X POST https://api.findutils.com/api/tools/keyword-density-checker/execute \
  -H "Content-Type: application/json" \
  -d '{
    "content": "SEO tools help. SEO tools rank pages.",
    "target_keyword": "seo tools"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/keyword-density-checker
```

Full REST reference: https://findutils.com/api/keyword-density-checker/ · OpenAPI 3.1 spec: https://findutils.com/api/openapi.json

---
Full catalog: POST https://mcp.findutils.com/ with method `tools/list` · https://findutils.com/mcp/ · https://findutils.com/llms.txt