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Questdb MCP Server

Developer ToolsModerate5.2MCP RegistryLocal
Free

Server data from the Official MCP Registry

Connects coding agents to a running QuestDB Web Console: notebook cells, SQL queries, and charts.

About

Connects coding agents to a running QuestDB Web Console: notebook cells, SQL queries, and charts.

Security Report

5.2
Moderate5.2Moderate Risk

The QuestDB MCP server is well-architected with proper authentication, secure token handling, and appropriate permission scoping. Code quality is high with comprehensive test coverage and input validation. Minor findings include broad exception handling and potential information disclosure in error messages, but these do not materially impact security for the server's intended use case (local WebSocket bridge to a browser console). Supply chain analysis found 2 known vulnerabilities in dependencies (2 critical, 0 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.

network_websocket

Check that this permission is expected for this type of plugin.

env_vars

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

HTTP Network Access

Connects to external APIs or services over the internet.

What You'll Need

Set these up before or after installing:

QuestDB Web Console origin.Optional

Environment variable: CONSOLE_ORIGIN

Fixed WebSocket port for pairing. Auto-allocated when unset.Optional

Environment variable: MCP_BRIDGE_PORT

Log file location. Defaults to a timestamped file under /tmp/questdb-mcp-bridge.Optional

Environment variable: LOG_PATH

Log verbosity. DEBUG adds heartbeats and full tool payloads.Optional

Environment variable: LOG_LEVEL

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-questdb-mcp-server-questdb": {
      "env": {
        "LOG_PATH": "your-log-path-here",
        "LOG_LEVEL": "your-log-level-here",
        "CONSOLE_ORIGIN": "your-console-origin-here",
        "MCP_BRIDGE_PORT": "your-mcp-bridge-port-here"
      },
      "args": [
        "-y",
        "@questdb/mcp-server-questdb"
      ],
      "command": "npx"
    }
  }
}

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