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Tomdacat Code v3.3 is distributed as a local Studio plugin through the official Google Drive download.

Download Tomdacat Code v3.3

Open the official Google Drive release folder and download TomDaCatCode-v3.3.rbxmx.
1

Download the v3.3 package

Download TomDaCatCode-v3.3.rbxmx from the official Google Drive folder above. Keep the file extension intact.
2

Import and save as a local plugin

Open a place in Roblox Studio and import the downloaded model into Workspace (drag the file into the viewport, or use Insert from File). Select its root Script, TomDaCatCode, then right-click and choose Save as Local Plugin. Use the same local plugin name when replacing an older copy to avoid duplicate toolbars. Remove the imported Workspace copy after saving: it is plugin source, not a game script to publish with your place.
3

Restart Studio

Plugin changes (including updates) only take effect after a full Studio restart — closing and reopening a place isn’t enough.
4

Open the Tomdacat Code dock

Look for the Tomdacat Code button in the Plugins ribbon tab. The dock title and Settings footer should show v3.3. A second dock widget for diffs opens when a script edit needs review.

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Choosing how you pay

The Auth Choice onboarding screen: Use my own API key vs Coding Plan On first launch you land on a Welcome screen, then an Auth Choice screen that asks how you want to pay — there’s no single default path anymore. Neither choice locks you in: both can be configured at once, and the Account section at the top of Settings switches between them any time.
Pay-as-you-go, billed in credits per token.
1

Get a key

Create one at ai.tomdacat.com if you don’t have one yet.
2

Paste it into Tomdacat Code

The key (and optional key password) is masked in setup and stored via plugin:SetSetting, Studio’s per-user settings store. Treat that store as a credential store, not an encryption guarantee. Release-build authentication requests go to ai.tomdacat.com.
3

You're in

Tomdacat Code authenticates through GET /v1/models, without calling a model or spending model tokens. It fetches the live model list and picks the cheapest model your account can actually use as the default — see Models & Reasoning for exactly how that choice is made.
Both key types are credentials. Do not paste keys into chat messages, screenshots, or shared source files. Key verification checks authentication and model listing; it does not prove a specific model can generate successfully.

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Updating

Download the new .rbxmx, import it, save the root Script as the same local plugin, remove the imported Workspace copy, and restart Studio. Workspace source and an installed plugin are separate copies: editing one does not update the other. Existing v3 settings keep their names, and the release file includes no account credentials or personal settings.