UI does not show structured content for tools

[michaelboyles]

Which version line?

v2 — current (@modelcontextprotocol/inspector@latest)

Which client?

Web

Inspector version

2.0.0

Node version

v24.11.0

Operating system (and browser, for the web client)

No response

Transport

Streamable HTTP

MCP server under inspection

Server: Custom
Protocol era: Legacy
OAuth: no

Steps to reproduce

Call a tool which returns structured content. Only the text content is shown. You need to dig into messages to see structured content.

A tool which only returns structured content with no text content says "No results yet" which I originally assumed meant the request was still in-flight.

Expected behavior

Show the structured content in the "Results" section, preferably as pretty printed JSON

Actual behavior

See above

Logs, errors, or screenshots

No response

Already prototyped a fix?

No response

Before you submit

• I searched existing issues and this is not a duplicate.
• This is not a security vulnerability report (those go through the private advisory process).

[cliffhall]

Fixed in #1975

[michaelboyles]

@cliffhall thanks, looks good

Sorry, probably missed the dupe issue as was already closed