Ceregrep Client

A modular, headless agent framework with support for Bash, Ripgrep, and MCP (Model Context Protocol). Can be invoked via TypeScript SDK, Python SDK, or CLI. Now available on npm!

Features

• Headless Architecture: No UI dependencies, pure SDK/CLI
• Modular Tools: Bash execution, Ripgrep search, extensible via MCP
• Multiple Interfaces: TypeScript SDK, Python SDK (planned), CLI
• Multi-Provider LLM: Support for Anthropic Claude and Cerebras (Qwen 3 Coder 480B)
• MCP Support: Connect to Model Context Protocol servers for additional tools
• Automatic Provider Routing: Seamlessly switch between LLM providers via config

Installation

From npm

npm install ceregrep

Or install globally for CLI usage:

npm install -g ceregrep

From source (development)

# Clone the repository
git clone https://github.com/swarmcode/ceregrep-client.git
cd ceregrep-client

# Install dependencies
npm install

# Build
npm run build

# Install globally from source
npm link

After running npm link, you can use the ceregrep command anywhere in your system.

Quick Start

TypeScript SDK

import { CeregrepClient } from 'ceregrep';

const client = new CeregrepClient({
  model: 'claude-sonnet-4-20250514',
  apiKey: process.env.ANTHROPIC_API_KEY,
});

// Query the agent
const result = await client.query('List all TypeScript files in the current directory');

console.log('Agent response:', result.messages);

CLI

# Query the agent
ceregrep query "List all TypeScript files"

# List available tools
ceregrep list-tools

# Show configuration
ceregrep config

Configuration

Ceregrep supports both global and project-specific configuration:

• Global config: ~/.ceregrep.json or ~/.swarmrc (applies to all projects)
• Project config: .ceregrep.json or .swarmrc in project directory (overrides global)

Create a global config for system-wide defaults, or project configs to override settings per-project.

Anthropic Claude (Default)

{
  "model": "claude-sonnet-4-20250514",
  "apiKey": "your-anthropic-api-key",
  "mcpServers": {
    "filesystem": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/path/to/directory"]
    }
  },
  "verbose": false,
  "debug": false
}

Cerebras (Qwen 3 Coder 480B)

Global config (recommended for Cerebras):

cat > ~/.ceregrep.json << 'EOF'
{
  "model": "qwen-3-coder-480b",
  "provider": {
    "type": "cerebras",
    "apiKey": "csk-your-cerebras-api-key",
    "baseURL": "https://api.cerebras.ai/v1",
    "temperature": 0.7,
    "top_p": 0.8
  },
  "verbose": true,
  "debug": false
}
EOF

Project config (alternative):

{
  "model": "qwen-3-coder-480b",
  "provider": {
    "type": "cerebras",
    "apiKey": "csk-your-cerebras-api-key",
    "baseURL": "https://api.cerebras.ai/v1",
    "temperature": 0.7,
    "top_p": 0.8
  },
  "verbose": false,
  "debug": false
}

Environment Variables

You can also set API keys via environment variables:

# For Anthropic
export ANTHROPIC_API_KEY=your-key-here

# For Cerebras
export CEREBRAS_API_KEY=your-key-here

Available Tools

Built-in Tools

• Bash: Execute shell commands in a persistent shell session
• Grep: Search for patterns in files using ripgrep

MCP Tools

Connect to any MCP server to extend functionality. Configure servers in .ceregrep.json:

{
  "mcpServers": {
    "server-name": {
      "type": "stdio",
      "command": "node",
      "args": ["path/to/server.js"]
    }
  }
}

API Reference

CeregrepClient

class CeregrepClient {
  constructor(options?: QueryOptions);

  // Query the agent
  async query(prompt: string, options?: QueryOptions): Promise<QueryResult>;

  // Get conversation history
  getHistory(): Message[];

  // Clear history
  clearHistory(): void;

  // Compact history (summarize with LLM)
  async compact(): Promise<void>;

  // Set custom tools
  setTools(tools: Tool[]): void;

  // Set model
  setModel(model: string): void;
}

QueryOptions

interface QueryOptions {
  model?: string;
  apiKey?: string;
  tools?: Tool[];
  maxThinkingTokens?: number;
  verbose?: boolean;
  debug?: boolean;
  dangerouslySkipPermissions?: boolean;
}

Architecture

The framework consists of several modular components:

• Core: Agent execution loop, message handling, tool interface
• Tools: Bash, Grep, and tool registry
• LLM: Anthropic client with tool formatting
• MCP: Model Context Protocol integration
• Config: Configuration loading and validation
• SDK: TypeScript (and Python) client libraries
• CLI: Command-line interface

MCP Server

Ceregrep can also be exposed as an MCP server, allowing other agents to use it as a tool for querying and analyzing codebases. Now available on PyPI!

What is the MCP Server?

The MCP server (mcp-server/) turns ceregrep into a context-finding tool that other agents can call. Instead of manually using bash and grep, agents can ask ceregrep (which has its own LLM-powered analysis) to find context.

This creates a recursive agent pattern where agents can delegate complex context-finding to specialized sub-agents.

Quick Setup

Prerequisites:

# Install ceregrep CLI first
npm install -g ceregrep

Option 1: Using Claude MCP CLI (Easiest)

claude mcp add ceregrep uvx ceregrep-mcp

Option 2: Using uvx (No Installation Required)

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "ceregrep": {
      "command": "uvx",
      "args": ["ceregrep-mcp"]
    }
  }
}

Option 3: Install via pip

pip install ceregrep-mcp

# Then add to Claude Desktop:
{
  "mcpServers": {
    "ceregrep": {
      "command": "ceregrep-mcp"
    }
  }
}

Available MCP Tools

• ceregrep_query: Query ceregrep to find context in codebases
  • Parameters: query (required), cwd, model, verbose
  • Example queries:
    • "Find all async functions in this codebase"
    • "Explain how the authentication system works"
    • "Show me all API endpoints"

See mcp-server/README.md for full documentation.

Development

# Install dependencies
npm install

# Build
npm run build

# Development mode (watch)
npm run dev

Requirements

• Node.js >= 18.0.0
• Anthropic API key
• ripgrep (rg) installed for Grep tool

License

MIT