MCP Examples

This page contains example configurations for popular MCP servers. Use these as templates for your own ~/.cosine/mcp.json file.

File System Access

Grant Cosine read/write access to specific directories:

{
  "mcpServers": {
    "documents": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/Users/pz/Documents"]
    },
    "projects": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/Users/pz/projects", "/Users/pz/work"]
    }
  }
}

Caution

Only grant access to directories you’re comfortable having the AI read and potentially modify. The server respects file permissions, but all accessible files will be visible to Cosine.

GitHub Integration

Connect to GitHub’s API for repository operations:

{
  "mcpServers": {
    "github": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-github"],
      "env": {
        "GITHUB_PERSONAL_ACCESS_TOKEN": "ghp_your_token_here"
      }
    }
  }
}

Required Environment Variables

Variable	Description
GITHUB_PERSONAL_ACCESS_TOKEN	GitHub personal access token with appropriate scopes

PostgreSQL Database

Query PostgreSQL databases directly:

{
  "mcpServers": {
    "postgres": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-postgres", "postgresql://user:pass@localhost/mydb"]
    }
  }
}

SQLite Database

Access SQLite databases:

{
  "mcpServers": {
    "sqlite": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-sqlite", "/path/to/database.db"]
    }
  }
}

Slack Integration

Send messages and interact with Slack channels:

{
  "mcpServers": {
    "slack": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-slack"],
      "env": {
        "SLACK_BOT_TOKEN": "xoxb-your-token",
        "SLACK_TEAM_ID": "T123456"
      }
    }
  }
}

Multiple Servers

Configure multiple MCP servers for different purposes:

{
  "mcpServers": {
    "filesystem": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/Users/pz/projects"]
    },
    "github": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-github"],
      "env": {
        "GITHUB_PERSONAL_ACCESS_TOKEN": "ghp_your_token"
      }
    },
    "slack": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-slack"],
      "env": {
        "SLACK_BOT_TOKEN": "xoxb-your-token",
        "SLACK_TEAM_ID": "T123456"
      }
    }
  }
}

Web Search with Brave

Enable web search capabilities:

{
  "mcpServers": {
    "brave-search": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-brave-search"],
      "env": {
        "BRAVE_API_KEY": "your_brave_api_key"
      }
    }
  }
}

HTTP Requests with Fetch

Make HTTP requests to any URL:

{
  "mcpServers": {
    "fetch": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-fetch"]
    }
  }
}

Browser Automation with Puppeteer

Control browsers programmatically:

{
  "mcpServers": {
    "puppeteer": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-puppeteer"]
    }
  }
}

Tip

For browser automation, you may also want to check out Cosine’s built-in Browser Automation feature which uses Chrome DevTools Protocol.

Git Operations

Perform Git operations on local repositories:

{
  "mcpServers": {
    "git": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-git"]
    }
  }
}

Using Environment Variable References

For better security, you can reference environment variables in your config:

{
  "mcpServers": {
    "github": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-github"],
      "env": {
        "GITHUB_PERSONAL_ACCESS_TOKEN": "${GITHUB_TOKEN}"
      }
    },
    "postgres": {
      "transport": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-postgres", "${DATABASE_URL}"]
    }
  }
}

Then export the variables in your shell:

export GITHUB_TOKEN=ghp_your_token
export DATABASE_URL=postgresql://user:pass@localhost/mydb
cos start

Remote MCP Servers

Connect to an MCP server running as a web service:

{
  "mcpServers": {
    "remote-api": {
      "transport": "streamable",
      "url": "http://localhost:3000/mcp"
    }
  }
}

This is useful for:

• Connecting to MCP servers running in Docker containers
• Using MCP servers deployed on internal infrastructure
• Developing and testing custom MCP servers

Next Steps

• MCP Configuration - Learn about MCP configuration options
• MCP Server Management - Learn about managing and troubleshooting MCP servers
• Building Custom MCP Servers - Create your own integrations