bjornmelin/grammarly-mcp

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MCP server for Grammarly AI detection and plagiarism scoring via Stagehand + Browserbase browser automation, with Claude-powered text optimization

概览

Single-tool Model Context Protocol (MCP) server for AI detection and plagiarism scoring via Grammarly's web interface. Supports two browser automation providers: (default) and (fallback). - Automates Grammarly's docs UI to get AI detection and plagiarism percentages - Rewrites text via Claude to reduce AI detection scores - Exposes one MCP tool: grammarly_optimize_text This server interacts with app.grammarly.com through browser automation. It does not use Grammarly APIs. Node.js 18+, Grammarly Pro account, Browserbase account Node.

README

以下为原文 README 节选，完整内容请查看原文。

Grammarly MCP Server

Single-tool Model Context Protocol (MCP) server for AI detection and plagiarism scoring via Grammarly’s web interface. Supports two browser automation providers: Stagehand + Browserbase (default) and Browser Use Cloud (fallback).

What it does

Automates Grammarly’s docs UI to get AI detection and plagiarism percentages
Rewrites text via Claude to reduce AI detection scores
Exposes one MCP tool: grammarly_optimize_text

Note: This server interacts with app.grammarly.com through browser automation. It does not use Grammarly APIs.

Quick Start
Features
Requirements
Installation
Provider Selection
Environment Variables
Running the Server
Client Configuration
Tool: grammarly_optimize_text
Session Persistence
How It Works
Development
Troubleshooting
Security Considerations
Notes and Limitations
License

Quick Start

Option A: Stagehand + Browserbase (Recommended)

Prerequisites: Node.js 18+, Grammarly Pro account, Browserbase account

# 1. Clone and build
git clone https://github.com/BjornMelin/grammarly-mcp.git
cd grammarly-mcp
pnpm install && pnpm build

# 2. Get Browserbase credentials
# - Sign up at https://www.browserbase.com
# - Create a project, note the Project ID
# - Generate an API key

# 3. Set up Claude Code CLI (for text rewriting)
npm install -g @anthropic-ai/claude-code
claude login

# 4. Configure environment
cp .env.example .env
# Edit .env with your Browserbase credentials

# 5. Add to Claude Code
claude mcp add grammarly -- node $(pwd)/dist/server.js

# 6. Test
claude "Use grammarly_optimize_text with mode score_only on: Hello world test"

Option B: Browser Use Cloud (Legacy)

Prerequisites: Node.js 18+, Grammarly Pro account, Browser Use Cloud account

# 1. Clone and build
git clone https://github.com/BjornMelin/grammarly-mcp.git
cd grammarly-mcp
pnpm install && pnpm build

# 2. Get Browser Use credentials
# - Sign up at https://cloud.browser-use.com
# - Create API key (bu_...)
# - Create profile and sync Grammarly login (profile_...)

# 3. Set up Claude Code CLI
npm install -g @anthropic-ai/claude-code
claude login

# 4. Configure environment
cp .env.example .env
# Set BROWSER_PROVIDER=browser-use and Browser Use credentials

# 5. Add to Claude Code
claude mcp add grammarly -- node $(pwd)/dist/server.js

Features

Dual provider support: Stagehand + Browserbase (default) or Browser Use Cloud (fallback)

在 GitHub 查看完整 README

安装

This server does not publish a one-line install command.

Open the repository installation guide 新手？先看 mcpskill.org 教程 →

配置

{
  "mcpServers": {
    "grammarly": {
      "command": "node",
      "args": ["/path/to/grammarly-mcp/dist/server.js"],
      "env": {
        "BROWSER_PROVIDER": "stagehand",
        "BROWSERBASE_API_KEY": "bb_xxx",
        "BROWSERBASE_PROJECT_ID": "xxx"
      }
    }
  }
}