Caddie
Hi! I'm Caddie — your AI copilot for CAD.
Developer Alpha

Get unstuck.
Design faster.

Caddie lives inside your CAD software, reads your design in real time, and gives specific answers. No copy-pasting, no tab switching, no generic advice.

✓ SolidWorks 2022+ ⌛ Fusion 360 — coming soon ⌛ Onshape — coming soon
⇓  Download Free See It In Action

Free  ·  v0.1 Alpha  ·  Windows 10/11 64-bit

FlangeCouplingHub.sldprt
TOP FRONT RIGHT X Y Z FlangeCouplingHub.SLDPRT  ·  18 features
Caddie Ask Caddie ready
FlangeCouplingHub.SLDPRT  ·  18 features
YOU
Review this flange hub before I send it for machining
CADDIE
2 issues found:
🔴 Boss-Extrude1 bore is ⌀22mm — shaft spec requires ⌀25mm
🟡 Fillet1 at hub-flange junction is R0.5mm — increase to R2.0mm for fatigue life
YOU
Fix the bore and update the fillet radius
FlangeCouplingHub.SLDPRT
Ask about your model…
Use Cases

See Caddie in action.

Real scenarios CAD engineers face every day.

🔧
Debugging

Stop searching forums.

Your sketch shows dangling relations after renaming a reference plane. Instead of searching StackOverflow for an hour, ask Caddie — it sees your feature tree and tells you exactly which relation to delete and what to replace it with.

My sketch has a dangling relation after I renamed Top Plane
In Boss-Extrude1 sketch, the coincident relation on line 3 references the old plane name. Right-click it → Delete Relation → re-add Coincident to Top Plane.
🎓
Certification

Study with your model open.

Working toward CSWP certification? Caddie walks you through practice exercises step by step, referencing your actual model. Ask it to explain why a feature was built a certain way and get exam-level answers.

Walk me through this lofted feature for my CSWP prep
Your Loft1 uses 3 profiles and 1 guide curve — a common CSWP question type. The key constraint examiners test: guide curves must pierce all profiles, not just intersect.
🔍
Model Review

Catch issues before your supervisor does.

One click runs a full model review — rebuild errors, naming conventions, dangling references, and design intent issues — all prioritized by severity so you know what to fix first.

Review my model for issues before I send it to the team
3 issues found:
🔴 Sketch3 has external ref to deleted edge
🟡 5 features use default names (Extrude1…)
🟢 Configuration naming looks good
Why Caddie

Designed for how engineers actually work.

Three principles that most AI tools miss entirely.

📊
Context-Aware AI

Before answering, Caddie reads your feature tree, active configuration, selection state, rebuild errors, and takes a live viewport screenshot. Every answer references your actual model — not a textbook example.

🔄
Always Up to Date

Caddie notifies you inside SolidWorks when a new version is ready. One download, ten seconds to apply — no re-registration needed. You never need to check a website.

🔒
Private by Default

All conversation history, notes, and preferences are stored in SQLite on your PC. No account needed, no telemetry, no analytics — confidential designs stay confidential.

💬
Smart Chat

Ask anything about your model. Caddie answers with specific references to your feature names, sketches, and mates.

🎓
CSWP → CSWE Training

Structured exercises and step-by-step guidance aligned with Dassault's certification syllabi.

🖼
Teach Me From Image

Drop a screenshot of any model and Caddie generates a complete SolidWorks build plan.

🧠
Persistent Memory

Caddie remembers your modeling style and project notes — all stored locally on your machine.

How It Works

Up and running in under 5 minutes.

Caddie runs entirely inside your CAD software as a native add-in. No browser, no copy-paste, no context switching.

1

Install the add-in

Extract the zip, right-click install.bat → Run as Administrator, enable Caddie under Tools → Add-Ins. No account needed.

2

Open your model

Open any part, assembly, or drawing. Caddie automatically captures your feature tree, configuration, and a viewport screenshot.

3

Ask anything

Type your question. Caddie responds with specific advice referencing your actual feature names, sketches, and mates.

Alpha Feedback

What engineers are saying.

"Caddie saved me 45 minutes on a loft failure I'd been fighting all morning. It saw exactly which sketch had the broken guide curve."
MR
Marco R.
Mechanical Engineer · 8 yrs SW
"I'm studying for my CSWP and having an AI that can actually see my model is a completely different experience. It's like having a senior engineer on call."
ST
Sarah T.
Design Engineer · CSWP candidate
"The model review caught a dangling reference I'd missed for two days. One click, instant answer, zero digging through the feature tree manually."
JK
James K.
Product Designer · Manufacturing
Resources

Everything you need to get started.

🚀
Quick Start Guide

Install Caddie, enable the add-in, and have your first conversation in under 5 minutes.

Read guide →
⚙️
How Caddie Works

Understand how Caddie captures context, routes requests, and keeps your data private.

Learn more →
🗺
Roadmap

See what's shipping now, what's next, and where Caddie is headed in future milestones.

View roadmap →
🔒
Privacy & Data

Everything stored locally. No telemetry. No account. Your CAD data never leaves your machine.

Read policy →
Roadmap

What's shipping and what's next.

Done

M1 — Core: Add-in + Fast Context + Chat

Add-in loads, taskpane UI, fast context snapshot (doc + features + screenshot), AI chat with streaming.

Next

M2 — Deep Context + Selection Awareness

Deep snapshot with mass properties, mates analysis, sketch validation, cancellable progress UI.

Soon

M3 — Structured AI Responses + Model Plans

Plan → Why → Check → Alternatives response format. Review tab powered by AI analysis.

Soon

M4 — Full Memory System

Per-project notes, preference learning, session summarization, searchable history.

Planned

M5 — Teach Me + Image Pipeline

Image-based build plan generator, CSWP exercise grading, CSWE certification track.

Planned

M6 — Commercial Polish + Installer

Packaged installer, licensing system, optional cloud sync (opt-in), multi-provider AI.

Privacy First

Your CAD data stays on your machine.

Caddie is built for engineers who work on confidential designs. We take data security seriously by default.

💾
Local Storage

All history, notes, and preferences are stored in SQLite on your PC. Nothing leaves without your permission.

🔑
No Account Needed

Caddie includes its own AI access during alpha. No OpenAI account or API key required — just install and go.

📵
No Telemetry

Zero usage tracking by default. No analytics, no crash reporting unless you explicitly opt in.

🏠
Opt-in Cloud

Cloud sync for history (coming in M6) is always explicit opt-in, never automatic.

Caddie
Developer Alpha · v0.1

Download Caddie

Ready to run inside SolidWorks 2022+. Extract the zip, run the installer, and you're chatting with your models in under 5 minutes.

⇓  Download CaddieAlpha.zip

Free during alpha  ·  Windows 10/11 64-bit  ·  SolidWorks 2022+  ·  Fusion 360 & Onshape coming soon

1
Extract the zip to a permanent folder — e.g. C:\Caddie\ Don't leave it in Downloads — the DLL path must stay fixed.
2
Right-click install.bat → Run as Administrator Click Yes on the UAC prompt. You'll see "SUCCESS: Caddie registered."
3
In SolidWorks: Tools → Add-Ins → Caddie → check Active & Start Up → OK The "Ask Caddie" panel appears on the right. Open any model and start chatting.
Full install guide →