Defined

MCP server for the Defined Networking API.

Installation

uv tool install git+https://github.com/quickvm/defined-mcp.git

To install a specific version or branch:

uv tool install git+https://github.com/quickvm/defined-mcp.git@main

For local development:

git clone [email protected]:quickvm/defined-mcp.git
cd defined-mcp
uv tool install --editable .

Configuration

Set the DEFINED_API_KEY environment variable to your Defined Networking API key. Get one from your admin panel.

export DEFINED_API_KEY=dnkey-...

Usage

Add to Claude Code

claude mcp add defined_mcp -- defined-mcp serve

Then restart Claude Code.

Verify connectivity

defined-mcp check

Run standalone

defined-mcp serve

Available Tools

Hosts

• list_hosts — List hosts with filters (role, blocked, lighthouse, relay)
• get_host — Get host details
• create_host — Create a host/lighthouse/relay
• update_host — Update a host (full replacement)
• delete_host — Delete a host
• block_host / unblock_host — Block/unblock a host
• add_host_tag / remove_host_tag — Add/remove a tag on a host
• create_enrollment_code — Generate enrollment code
• create_host_and_enrollment_code — Create host + enrollment code

Roles & Firewall Rules

• list_roles / get_role — List/get roles with firewall rules
• create_role / update_role — Create/update roles (full replacement)
• delete_role — Delete a role
• add_firewall_rule — Add a firewall rule to a role (flat params, no JSON)
• remove_firewall_rule — Remove a firewall rule by index

Tags

• list_tags / get_tag — List/get tags
• create_tag / update_tag — Create/update tags with config overrides
• delete_tag — Delete a tag
• add_tag_config_override — Add/replace a config override on a tag
• remove_tag_config_override — Remove a config override by key

Networks

• list_networks / get_network — List/get networks
• create_network / update_network — Create/update networks

Routes

• list_routes / get_route — List/get routes with firewall rules
• create_route / update_route — Create/update routes (full replacement)
• delete_route — Delete a route
• add_route_firewall_rule — Add a firewall rule to a route
• remove_route_firewall_rule — Remove a route firewall rule by index

Other

• list_audit_logs — Audit log with filters
• list_downloads — Software download links (unauthenticated)

Claude Code Skills

This repo includes a Claude Code skill for interactive network management. When you run Claude Code from this repo, the /network-architect command is available automatically.

To use the skill from any project, copy it to your Claude Code profile:

cp -r .claude/skills/network-architect ~/.claude/skills/

/network-architect audit

Performs a security and configuration audit of your Defined Networking account. Fetches all networks, roles, tags, and hosts, then reports:

• Roles with missing or overly permissive firewall rules
• Dead tags (zero hosts assigned)
• Hosts with no tags, outdated dnclient versions, or stale last-seen times
• Firewall coverage summary per role with port/protocol/tag details

/network-architect design

Interactive firewall policy design session. Asks about your services, access requirements, and segmentation needs, then proposes:

• Role structure (what each host type IS)
• Tag taxonomy (access tags like ssh:allow, identity tags like user-type:admin)
• Firewall rules per role in table format with AND logic (role + tags)

/network-architect apply

Implements a network design using atomic tools (add_firewall_rule, add_host_tag, etc.). Reads current state first, shows a diff, asks for confirmation, then verifies after applying.

License

MIT