Drive your Autodesk apps from any MCP client, in plain language.
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HMK Pilot runs a secure local MCP server inside your Autodesk application and exposes 330+ real actions, so an AI assistant can read and edit the live model in plain language — not a stale export.
Part of HMK Tools. Full guide: hmktools.com/revit-mcp · Comparison: vs other Revit MCP options
- Revit — 100+ actions: select elements, edit parameters, create sheets, tag views, run clash checks, export IFC/NWC, drive Dynamo, and more. Also a built-in chat panel.
- AutoCAD — 80+ actions: draw & modify geometry, manage layers, blocks & xrefs, layouts and plotting to PDF.
- Civil 3D — 50+ additional actions: alignments, profiles, surfaces, corridors, pipe networks, sample lines & section views, COGO points.
- Navisworks — 90+ actions: search sets, clash detection, TimeLiner 4D, quantification, viewpoints, federation (append / merge / refresh / publish).
- Runs 100% locally (bound to
localhost) — your models and drawings never leave your machine. - Optional Roslyn escape hatch —
execute_revit_code,execute_autocad_code,execute_civil_code,execute_navisworks_code(toggle off in Settings → Security).
Pilot AI speaks plain MCP, so anything that does will work. These are detected and configured for you, one click each:
| Client | Config |
|---|---|
| Claude Desktop | JSON (both config locations) |
| Claude Code | JSON |
| ChatGPT / Codex | TOML |
| Cursor | JSON |
| Google Antigravity | JSON |
Setup scans for the clients you actually have installed and writes only to those. Any MCP servers already in your config are preserved — the writer merges rather than replaces, and reports how many entries it left alone.
Running more than one Autodesk app, or several instances of the same one? Turn on the 3-slot pool and each instance gets its own server entry, so the assistant can tell them apart instead of racing for a single port.
The connectors ship a knowledge base the assistant can pull on demand through
get_knowledge_template — verified API notes, workflow recipes, unit tables and
safety rules per application. It means the assistant reaches for a checked
pattern instead of guessing an API member and burning a round on the error.
It also learns from your machine. When a code call fails and a later one succeeds, the working snippet and the error it stopped hitting are saved locally, then offered back on similar work — including in a later session, and across both the MCP server and the in-app chat panel. Nothing about this leaves your computer.
The skills/ folder is part of the workflow knowledge HMK Pilot ships
with each app — auditing a model, laying out sheets, running clash tests,
building a TimeLiner schedule, what to confirm before a destructive change, and
how to report results back:
Revit · AutoCAD / Civil 3D ·
Navisworks.
With the connector attached there is nothing to install: the assistant already
pulls these on demand through get_knowledge_template. Each file also carries
name / description frontmatter, so it loads as a Claude Skill (in Claude
Code, save it as ~/.claude/skills/<name>/SKILL.md) — but they are written
against HMK Pilot's tool names, so they only work while the HMK Pilot
connector is connected.
- Windows (x64)
- Autodesk Revit 2023–2027, AutoCAD / Civil 3D 2021–2027, and/or Navisworks Manage / Simulate 2023–2027
- An MCP client from the table above (bring your own AI account)
- An HMK Tools license — free 30-day trial, no card (pricing)
No Node.js, no Python, no separate runtime. The local bridge is a single native executable that ships with the add-in.
- Download & install HMK Tools from hmktools.com/install.
- In Revit / AutoCAD / Civil 3D / Navisworks, open the HMK Tools → Pilot AI ribbon and toggle the Connector on.
- Open Settings → Setup Guide, find your assistant in the list and click Configure — done. Restart the client so it picks up the new server.
Step-by-step with screenshots: Getting started · Connect a client.
- Getting started: https://hmktools.com/docs/getting-started
- Connect an MCP client: https://hmktools.com/docs/connect
- Asking for what you want: https://hmktools.com/docs/how-to-ask
- Troubleshooting: https://hmktools.com/docs/troubleshooting
- Per app — Revit: https://hmktools.com/docs/revit · AutoCAD / Civil 3D: https://hmktools.com/docs/autocad · Navisworks: https://hmktools.com/docs/navisworks
- How Revit MCP works: https://hmktools.com/revit-mcp
- AutoCAD & Civil 3D MCP: https://hmktools.com/autocad-mcp
- Navisworks + AI: https://hmktools.com/navisworks-ai
- Compare the options: https://hmktools.com/revit-mcp-comparison
- AI in Revit (guide): https://hmktools.com/blog/ai-in-revit
- Revit connector: https://hmktools.com/toolbox/pilot-ai-revit
- AutoCAD & Civil 3D connector: https://hmktools.com/toolbox/pilot-cad
- Navisworks connector: https://hmktools.com/toolbox/navis-pilot
- What changed, release by release: https://hmktools.com/changelog
HMK Pilot is one part of a 28-tool suite for Revit, AutoCAD, Civil 3D and Navisworks — parameter automation, rebar, modeling, batch export and more. Browse them all at hmktools.com/toolbox.
This repository is an overview, not the source — issues here are welcome, but the fastest route to a person is hmktools.com/contact.
Commercial — included with an HMK Tools license (free 30-day trial). This repository is the public overview for the HMK Pilot MCP server; the server itself ships inside the HMK Tools add-in.
Revit, AutoCAD, Civil 3D and Navisworks are trademarks of Autodesk, Inc. HMK Tools is not affiliated with, endorsed by, or sponsored by Autodesk.