Support Resource Subscriptions

[kentcdodds]

Is your feature request related to a problem? Please describe.

I want to make sure that my resource subscriptions are working properly. Because so many clients don't support resource subscriptions (do any popular hosts?), the Inspector is a good first spot to start testing this capability.

Describe the solution you'd like

Perhaps there's a button on each resource to trigger a subscription with the resources/subscribe method on that resource and then it keeps the displayed content for that resource up-to-date.

Describe alternatives you've considered

Manually fetching in the UI.

[caseychow-oai]

Looks like this is already supported as of 747c015, but many servers don't advertise this capability. I found FastMCP hard-codes the inability to subscribe to resources, so the button doesn't show.

[cliffhall]

Resource subscriptions are already supported (one of the first features I added). Server has to support subscriptions, try the Everything server. I also added support there at the same time.