Add support for remote MCP servers via npx snippet

[clicktodev]

Closes #37770

Release Notes:

• Introduce functionality to add remote mcp servers through the UI via an example snippet

Introduce server type selection and template switching for context server configuration. This update allows users to choose between local and remote server templates, improving flexibility in server setup. The editor content updates dynamically based on the selected template type.

btw i can confirm that the server command is run twice when adding a server causing 2 browser auth tabs to open (notice in the video below how 2 tabs are opened after adding the server entry) which is different from the behavior in the latest Zed 0.203.5 release which correctly only opens one auth tab

Screen.Recording.2025-09-14.at.1.07.42.AM.mp4

[imumesh18]

Using this doesn't seem right IMO. We should either add our own http transport or simply use the rust-sdk official lib.

[versecafe]

I think the benefit here is it allows people to use any transport if needed as sometimes you'll need special behaviour baked into a custom transport layer

[clicktodev]

yeah also the main purpose of this is to guide users into a quick workaround for remote servers until built-in support is added.

[clicktodev]

relevant bug:

• AI: add mcp server command is run twice #38206

[benbrandt]

Same comment: going to close this PR in favor of #39021

Thanks for taking a stab at this! we'd rather take the approach of communicating with the remote servers natively, rather than call out to another binary though.