GREB MCP Server

Semantic code search for AI agents. Search your codebase using natural language queries.

Features

• Natural Language Search - Describe what you're looking for in plain English
• High-Precision Results - Smart ranking returns the most relevant code first
• Works with Any MCP Client - Claude Desktop, Cursor, Windsurf, Cline, Kiro, and more
• No Indexing Required - Search any codebase instantly without setup
• Fast - Results in under 5 seconds even for large repositories

Installation

Install Greb globally using pip or npm:

Python:

pip install cheetah-greb

Node.js:

npm install -g cheetah-greb

Get Your API Key

1. Go to Dashboard → API Keys
2. Click Create API Key
3. Copy the key (starts with grb_)

Configuration

Add to your MCP client config (Cursor, Windsurf, Claude Desktop, Kiro, etc.):

Python installation:

{
  "mcpServers": {
    "greb-mcp": {
      "command": "greb-mcp",
      "env": {
        "GREB_API_KEY": "grb_your_api_key_here"
      }
    }
  }
}

Node.js installation:

{
  "mcpServers": {
    "greb-mcp": {
      "command": "greb-mcp-js",
      "env": {
        "GREB_API_KEY": "grb_your_api_key_here"
      }
    }
  }
}

Claude Code Setup

Mac/Linux (Python):

claude mcp add --transport stdio greb-mcp --env GREB_API_KEY=grb_your_api_key_here -- greb-mcp

Windows PowerShell (Python):

claude mcp add greb-mcp greb-mcp --transport stdio --env "GREB_API_KEY=grb_your_api_key_here"

Mac/Linux (Node.js):

claude mcp add --transport stdio greb-mcp --env GREB_API_KEY=grb_your_api_key_here -- greb-mcp-js

Windows PowerShell (Node.js):

claude mcp add greb-mcp greb-mcp-js --transport stdio --env "GREB_API_KEY=grb_your_api_key_here"

Tool: code_search

Search code using natural language queries powered by AI.

Parameters

Parameter	Type	Required	Description
query	string	Yes	Natural language search query
keywords	object	Yes	Search configuration
keywords.primary_terms	string[]	Yes	High-level semantic terms (e.g., "authentication", "database")
keywords.code_patterns	string[]	No	Literal code patterns to grep for
keywords.file_patterns	string[]	Yes	File extensions to search (e.g., ["*.ts", "*.js"])
keywords.intent	string	Yes	Brief description of what you're looking for
directory	string	Yes	Full absolute path to directory to search

Example

{
  "query": "find authentication middleware",
  "keywords": {
    "primary_terms": ["authentication", "middleware", "jwt"],
    "code_patterns": ["authenticate(", "isAuthenticated"],
    "file_patterns": ["*.js", "*.ts"],
    "intent": "find auth middleware implementation"
  },
  "directory": "/Users/dev/my-project"
}

Response

Returns ranked code snippets with:

• File paths
• Line numbers
• Relevance scores
• Code content
• Reasoning for each match

Usage Examples

Ask your AI assistant to search code naturally:

"Use greb mcp to find authentication middleware"
"Use greb mcp to find all API endpoints"
"Use greb mcp to look for database connection setup"
"Use greb mcp to find where user validation happens"
"Use greb mcp to search for error handling patterns"

Links

• Website
• Documentation
• Get API Key

License

This project is licensed under the MIT License — see the LICENSE file for details.