mikrotik-rest-mcp 0.1.2

FastMCP server for MikroTik RouterOS management

MikroTik MCP Server

FastMCP server that exposes MikroTik RouterOS REST API as MCP tools

Overview • Get Started • Configuration • MCP Client Setup • Troubleshooting

Manage MikroTik devices from any MCP-compatible client (Claude Code, Claude Desktop, OpenCode, or custom MCP clients) using a single server package.

[!NOTE] This server exposes 100+ tools across IP, firewall, DNS, DHCP, interfaces, and system domains. This large tool surface can consume significant context window space. See Context Window Considerations for recommendations.

Overview

This server wraps RouterOS REST endpoints (/rest/...) and exposes them as typed MCP tools.

• Built with FastMCP + async httpx
• Pydantic validation for inputs and settings
• stdio, sse, and streamable-http transport modes
• Single connection manager shared through MCP lifespan

Get Started

Prerequisites

• Python 3.11+
• uv (recommended) or any PEP 517 installer
• MikroTik RouterOS v7.1+ with REST API reachable

Install

Run without installing (recommended):

uvx mikrotik-rest-mcp

Or with Nix (no Python required):

nix run github:alizdavoodi/mikrotik-rest-mcp

Install into current environment:

uv pip install mikrotik-rest-mcp

From source (contributors):

uv sync --dev

If you prefer Nix for development:

nix develop

Run

export MIKROTIK_HOST=192.168.88.1
export MIKROTIK_USERNAME=admin
export MIKROTIK_PASSWORD=yourpassword
export MIKROTIK_PORT=80

# with uv
uvx mikrotik-rest-mcp

# with nix
nix run github:alizdavoodi/mikrotik-rest-mcp

Test with MCP Inspector:

npx @modelcontextprotocol/inspector uvx mikrotik-rest-mcp

Configuration

All settings are read from process environment variables.

Variable	Description	Default
MIKROTIK_HOST	Router IP or hostname	(required)
MIKROTIK_USERNAME	Router username	admin
MIKROTIK_PASSWORD	Router password	(required)
MIKROTIK_PORT	RouterOS REST API port	80
MIKROTIK_USE_SSL	Use HTTPS	false
MIKROTIK_SSL_VERIFY	Verify TLS certificate	false
MIKROTIK__MCP__TRANSPORT	MCP transport: stdio, sse, streamable-http	stdio
MIKROTIK__MCP__HOST	Bind host for non-stdio transports	0.0.0.0
MIKROTIK__MCP__PORT	Bind port for non-stdio transports	8000

[!IMPORTANT] mikrotik-rest-mcp reads process env. It does not auto-load .env. In MCP clients, prefer setting variables in the client's env / environment block.

SSE example:

MIKROTIK__MCP__TRANSPORT=sse uvx mikrotik-rest-mcp

Tool Coverage

Registered domains include:

• IP: addresses, routes, pools
• DNS: resolver config, cache, static entries
• Firewall: filter rules, NAT, address lists
• Interfaces: VLAN, wireless, WireGuard
• DHCP: servers, leases, pools
• System: users, backups, logs, logging rules/actions

Tool naming convention follows mikrotik_<verb>_<resource>.

MCP Client Setup

Context Window Considerations

This server registers 100+ tools. When an MCP client loads all tool definitions into context at startup, this can consume a substantial portion of the available context window — leaving less room for conversation and reasoning.

Recommendations:

• Use lazy-loading / tool search if your client supports it. This defers tool definition loading until a tool is actually needed, keeping context lean.
• Claude Code supports this via MCP tool search. Enable it by setting CLAUDE_MCP_TOOL_SEARCH=true in your environment before launching Claude Code. This is the recommended approach when using Claude Code with this server.
• If your client does not support lazy loading, consider whether you need all domains active. You can still use the server — just be aware of the context cost.

Claude Code

Add to your project-level .mcp.json (recommended) or global ~/.claude/settings.json:

{
  "mcpServers": {
    "mikrotik": {
      "command": "uvx",
      "args": ["mikrotik-rest-mcp"],
      "env": {
        "MIKROTIK_HOST": "192.168.88.1",
        "MIKROTIK_USERNAME": "admin",
        "MIKROTIK_PASSWORD": "yourpassword",
        "MIKROTIK_PORT": "80"
      }
    }
  }
}

With Nix:

{
  "mcpServers": {
    "mikrotik": {
      "command": "nix",
      "args": ["run", "github:alizdavoodi/mikrotik-rest-mcp"],
      "env": {
        "MIKROTIK_HOST": "192.168.88.1",
        "MIKROTIK_USERNAME": "admin",
        "MIKROTIK_PASSWORD": "yourpassword",
        "MIKROTIK_PORT": "80"
      }
    }
  }
}

[!TIP] Enable tool search to avoid loading 100+ tool definitions into context:

export CLAUDE_MCP_TOOL_SEARCH=true
claude

Claude Desktop

Add to your Claude Desktop config (claude_desktop_config.json):

{
  "mcpServers": {
    "mikrotik": {
      "command": "uvx",
      "args": ["mikrotik-rest-mcp"],
      "env": {
        "MIKROTIK_HOST": "192.168.88.1",
        "MIKROTIK_USERNAME": "admin",
        "MIKROTIK_PASSWORD": "yourpassword",
        "MIKROTIK_PORT": "80"
      }
    }
  }
}

With Nix:

{
  "mcpServers": {
    "mikrotik": {
      "command": "nix",
      "args": ["run", "github:alizdavoodi/mikrotik-rest-mcp"],
      "env": {
        "MIKROTIK_HOST": "192.168.88.1",
        "MIKROTIK_USERNAME": "admin",
        "MIKROTIK_PASSWORD": "yourpassword",
        "MIKROTIK_PORT": "80"
      }
    }
  }
}

OpenCode

Add to your OpenCode config (opencode.json):

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mikrotik": {
      "type": "local",
      "command": ["uvx", "mikrotik-rest-mcp"],
      "environment": {
        "MIKROTIK_HOST": "192.168.88.1",
        "MIKROTIK_USERNAME": "admin",
        "MIKROTIK_PASSWORD": "yourpassword",
        "MIKROTIK_PORT": "80"
      }
    }
  }
}

With Nix:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mikrotik": {
      "type": "local",
      "command": ["nix", "run", "github:alizdavoodi/mikrotik-rest-mcp"],
      "environment": {
        "MIKROTIK_HOST": "192.168.88.1",
        "MIKROTIK_USERNAME": "admin",
        "MIKROTIK_PASSWORD": "yourpassword",
        "MIKROTIK_PORT": "80"
      }
    }
  }
}

Architecture

server.py -> app.py -> FastMCP(lifespan)
                    -> tools.register_tools()
                    -> MikrotikConnectionManager
                    -> RouterOS REST API (/rest/...)

• src/mikrotik_rest_mcp/server.py: entrypoint + transport selection
• src/mikrotik_rest_mcp/app.py: FastMCP app + lifecycle wiring
• src/mikrotik_rest_mcp/connection.py: async HTTP client and request handling
• src/mikrotik_rest_mcp/tools/: domain tool modules

Troubleshooting

MCP error -32000: Connection closed

This usually means server startup failed early or env vars were missing in the spawned process.

Check raw startup error:

uvx mikrotik-rest-mcp 2>&1

Ensure MIKROTIK_* variables are set in your client's env/environment config block, or exported before launching the client.

Validate connectivity quickly

export MIKROTIK_HOST=192.168.88.1
export MIKROTIK_USERNAME=admin
export MIKROTIK_PASSWORD=yourpassword
curl -u "$MIKROTIK_USERNAME:$MIKROTIK_PASSWORD" "http://$MIKROTIK_HOST/rest/system/resource"

If you use HTTPS, switch the URL to https:// and apply your TLS verification settings.

Security Notes

[!IMPORTANT] This server can modify live network configuration.

• Use a dedicated RouterOS user with minimum required permissions.
• Prefer HTTPS (MIKROTIK_USE_SSL=true, MIKROTIK_PORT=443) in production.
• Restrict RouterOS REST access by source IP/firewall rules.
• Never commit secrets.