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Humanize AI text and check AI-detection scores from Claude, Cursor, or any MCP client.
About
Humanize AI text and check AI-detection scores from Claude, Cursor, or any MCP client.
Security Report
This is a well-structured MCP server with proper authentication, no malicious patterns, and appropriate permissions for its purpose. The server requires an API key for all operations, validates inputs with Zod, handles errors gracefully, and makes only necessary network calls to the Rephrasy API. Minor code quality observations exist but do not constitute security vulnerabilities. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
3 files analyzed · 6 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: REPHRASY_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-rephrasyai-rephrasy-mcp": {
"env": {
"REPHRASY_API_KEY": "your-rephrasy-api-key-here"
},
"args": [
"-y",
"@rephrasy/mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Rephrasy MCP Server
Use Rephrasy from Claude, Cursor, or any MCP client: humanize AI-generated text and check AI-detection scores without leaving your editor or agent workflow.
Two tools, one API key:
| Tool | What it does |
|---|---|
humanize | Rewrites AI-generated text in a natural, human style while preserving meaning |
detect | Scores how likely a text is to be flagged as AI-written (overall + optional per-sentence) |
Setup
1. Get an API key — sign in at rephrasy.ai → Account → API. Both tools bill against your Rephrasy plan.
2. Add the server to your client:
Claude Code
claude mcp add rephrasy -e REPHRASY_API_KEY=<your-key> -- npx -y @rephrasy/mcp
Claude Desktop
Add to claude_desktop_config.json (Settings → Developer → Edit Config):
{
"mcpServers": {
"rephrasy": {
"command": "npx",
"args": ["-y", "@rephrasy/mcp"],
"env": { "REPHRASY_API_KEY": "<your-key>" }
}
}
}
Cursor
Add to .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):
{
"mcpServers": {
"rephrasy": {
"command": "npx",
"args": ["-y", "@rephrasy/mcp"],
"env": { "REPHRASY_API_KEY": "<your-key>" }
}
}
}
Until the package is on npm you can run it straight from GitHub: replace
"args": ["-y", "@rephrasy/mcp"]with"args": ["-y", "github:rephrasyai/rephrasy-mcp"].
Tools
humanize
| Parameter | Type | Required | Description |
|---|---|---|---|
text | string | yes | The text to humanize |
model | string | no | Rephrasy model, default "v3" |
style | string | no | Writing-style ID from your account to mimic a specific voice |
language | string | no | Output language hint (e.g. "en", "de"); defaults to input language |
Returns the rewritten text plus the number of words charged.
detect
| Parameter | Type | Required | Description |
|---|---|---|---|
text | string | yes | The text to score (max 15,000 characters) |
per_sentence | boolean | no | If true, also returns a score per sentence |
Returns JSON with scores.overall (lower = more human-like) and, in per-sentence mode, sentences.
Example prompts
- "Humanize this paragraph, then run detect on the result to verify it."
- "Rewrite my draft with the humanize tool using my writing style
<style-id>." - "Check which sentences of this post read as AI-written."
Development
npm install
npm run build
REPHRASY_API_KEY=<key> node dist/index.js # runs on stdio
License
MIT © Rephrasy
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