A free guide by Mariah Brunner

How to
Customize
Plugins in
Claude

The one thing most people skip that makes plugins actually useful.

@itsmariahbrunner

What is a Cowork plugin?

A plugin is a prebuilt setup for a specific kind of work. Instead of building everything from scratch, you install one and it comes with skills, connectors, and workflows already packaged together.

For example, a single plugin might come with 5 built-in skills, 5 agents, and 7 connectors. All ready to go.

Most people install a plugin and start using it right away. That's fine. But they're leaving a lot on the table.

The one thing most people skip

Customize it.

When you first install a plugin, it works. But it doesn't know YOUR tools, YOUR process, or how YOU like things done. It's running on defaults.

The difference between a plugin that's "pretty cool" and one that actually saves you hours every week is customization.

How to do it

Step by step

Step 1: Open the plugin

Go into the plugin you installed and hit Customize.

Step 2: Answer the questions

Claude will ask you a few things about how you work. Your tools, your preferences, your process. Answer them honestly and in detail. The more context you give, the better the plugin performs.

Step 3: Review the skills

After customizing, go through each skill the plugin came with. Look at the instructions Claude is using. If something doesn't match how you actually work, edit it. These skills run every time you use the plugin so they need to be right.

Step 4: Check the connectors

Make sure the plugin is connected to the right apps. If it came with a Gmail connector but you use Outlook, swap it. If it has a Google Drive connector, make sure it's pointing at the right folder. The plugin is only as useful as the data it can access.

Pro tips

Get more out of every plugin

Run each skill once after customizing

Don't just customize and walk away. Run each skill on a real task so you can see if the output matches what you actually need. Fix anything that's off while it's fresh.

Add your own skills to the plugin

Plugins come with prebuilt skills, but you can add your own. If there's a workflow you do every week that the plugin doesn't cover, build a skill for it and add it to the same plugin. Keep everything in one place.

Recustomize after a few weeks

Once you've used a plugin for a while, you'll know what works and what doesn't. Go back into Customize and update your answers. Your workflow will evolve and the plugin should evolve with it.

Stack plugins together

You don't have to pick one. Use different plugins for different parts of your work. One for client communication, one for project management, one for content. They all share the same Memory and connectors.

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A plugin out of the box is useful. A plugin customized to how you work is a completely different thing.

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