How to Add a Plugin Marketplace to Claude Cowork
Install the Altrym GitHub plugin marketplace in Claude Cowork through Customize > Connectors so users can add Telvine Plugin Builder.
Claude Cowork lets users add personal plugin marketplaces from Git. This is the right path for installing Telvine Plugin Builder without passing around a zip file.
The GitHub browser page for the marketplace is:
https://github.com/Altrym/example-plugin-marketplace/tree/mainDo not paste a /tree/main/... GitHub page into the Source field. Cowork clones the Source as a Git remote, so Source must be the repo root.
Open Add marketplace
In Claude Cowork, go to:
Customize > Connectors > + > Browse plugins > Personal > + > Add marketplaceEnter the Telvine marketplace values:
| Field | Value |
|---|---|
| Source | https://github.com/Altrym/example-plugin-marketplace.git |
| Git ref | main |
| Sparse paths | .agents/plugins and plugins |
Then add Telvine Plugin Builder from the marketplace.
The plugin lives at:
plugins/telvine-plugin-builderWhich Git ref should you use?
Use main for the latest Telvine marketplace. Use a version tag when you need a pinned release for a team rollout.
When the marketplace source changes on the selected Git ref, Claude Cowork can pick up the newer plugin after the marketplace is refreshed or reinstalled. Active sessions may continue using the version they already loaded.
Why Git instead of zip?
Git gives users a repeatable install path and a source of truth for updates. Zip upload is fine for local testing, but it makes version drift more likely once more than one person is using the plugin.