HydraDNS MCP Server

by hydradnsio.github.hydradns/hydra-mcpv0.1.0

Manage a self-hosted DNS firewall: block domains, create policies, read query logs and metrics.

1Dockerstdioofficial registry

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Active13d ago

Install HydraDNS MCP server

claude mcp add cli-hydradns -e HYDRA_API_URL=http://host.docker.internal:8080 -e HYDRA_TOKEN='<hydra-token>' -- docker run -i --rm -e HYDRA_API_URL -e HYDRA_TOKEN ghcr.io/hydradns/hydra-cli:0.1.0 mcp

{
  "mcpServers": {
    "cli-hydradns": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "HYDRA_API_URL",
        "-e",
        "HYDRA_TOKEN",
        "ghcr.io/hydradns/hydra-cli:0.1.0",
        "mcp"
      ],
      "env": {
        "HYDRA_API_URL": "http://host.docker.internal:8080",
        "HYDRA_TOKEN": "<hydra-token>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "cli-hydradns": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "HYDRA_API_URL",
        "-e",
        "HYDRA_TOKEN",
        "ghcr.io/hydradns/hydra-cli:0.1.0",
        "mcp"
      ],
      "env": {
        "HYDRA_API_URL": "http://host.docker.internal:8080",
        "HYDRA_TOKEN": "<hydra-token>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "cli-hydradns": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "HYDRA_API_URL",
        "-e",
        "HYDRA_TOKEN",
        "ghcr.io/hydradns/hydra-cli:0.1.0",
        "mcp"
      ],
      "env": {
        "HYDRA_API_URL": "http://host.docker.internal:8080",
        "HYDRA_TOKEN": "<hydra-token>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "cli-hydradns": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "HYDRA_API_URL",
        "-e",
        "HYDRA_TOKEN",
        "ghcr.io/hydradns/hydra-cli:0.1.0",
        "mcp"
      ],
      "env": {
        "HYDRA_API_URL": "http://host.docker.internal:8080",
        "HYDRA_TOKEN": "<hydra-token>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
HYDRA_API_URL	yes	—	Base URL of the HydraDNS controlplane API. Inside a container, 'localhost' means the container itself, not the host running the controlplane. On Docker Desktop (Mac/Windows) the default below resolves automatically. On plain Docker Engine (Linux) either run the container with --add-host=host.docker.internal:host-gateway, or use --network host with http://localhost:8080 instead. Full instructions: docs/mcp.md in the repo, 'Running it -> As the container image'.
HYDRA_TOKEN	yes	yes	Bearer token for the HydraDNS API, obtained via `hydra login` or the setup wizard. Grants whatever access the token's account has; MCP_ROLE narrows what the MCP tool layer will call, not what the token itself can do against the API directly.
MCP_ROLE	—	—	Permission scope for this MCP session: admin (default, every tool), operator (every mutating tool except toggle_engine), or reporter (read-only tools only). Any unrecognized value safe-defaults to reporter.

Freshness

Active — last maintenance signal 13d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-27 · 13d ago · GitHub
Latest release
2026-09-26 · 13d ago · GitHub · v0.1.1
Package published
no data · npm/PyPI
Registry entry updated
2026-09-21 · 19d ago · official registry · v0.1.0

FAQ

›How do I install the HydraDNS MCP server in Claude Code?

Run: claude mcp add cli-hydradns -e HYDRA_API_URL=http://host.docker.internal:8080 -e HYDRA_TOKEN='<hydra-token>' -- docker run -i --rm -e HYDRA_API_URL -e HYDRA_TOKEN ghcr.io/hydradns/hydra-cli:0.1.0 mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does HydraDNS require an API key?

Yes. It expects HYDRA_API_URL, HYDRA_TOKEN, of which 1 is a secret.

›Can I use HydraDNS as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is HydraDNS in the official MCP registry?

Yes, as io.github.hydradns/hydra-mcp.