[FEATURE] Plugins - Add postInstall, postUpdate and postUninstall hooks in plugin.json

I would also like this - trying to package my MCP server in my plugin and would love to not have to publish it on npm and just do it through the marketplace.

@samber - What was your work around you mentioned?

@amcdnl In the meantime, i'm going to use npx in my hooks.

https://github.com/samber/cc-caffeine/blob/main/hooks/hooks.json

@amcdnl In the meantime, i'm going to use npx in my hooks. https://github.com/samber/cc-caffeine/blob/main/hooks/hooks.json

Gotcha, requires publishing a package. Thats what I'm trying to get around here. Thanks for the quick feedback.

npx is also slow...

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Still relevant.

+1 for this! Our use case for "post install" hook is:

• Printing some useful first-time instructions, so they are not just left "hanging" after installing the plugin. And yeah you can put stuff in the plugin description, but it is not the same.
• Doing some initial setup, in our case creation of a file + small automatic addition to Claude.md. Yeah we can do it on SessionStart but then that happens only after they restart CC, or we can try doing it on any command run from plugin but then we need to add that logic and checks to every command, ... .

Post install hook would make this stuff simple.

+1 for this, we have started to use plugins extensively for tooling and we need to be able to setup interactive setup on plugin installation, right now we have a plugin command for that but it looks out of place.

This is going to be critical! At the moment there's going to be a big mess when plugins update, change names, everything..
It's probably worth stealing a lifecycle from something like npm, pip, apt, etc.

I'd be happy to make a patch if the dev team is interested? @bcherny @claude ? I have extensive experience developing packaging systems...

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Was kinda a bummer that I can't add anything after user has successfully installed my plugin.

Plugins should support a postInstall field (message string or script path) that displays output after installation. Currently /plugin install shows (no content) with no way for plugin authors to confirm success or show usage instructions to users.

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