Build errors on MacOS 26.6 (Tahoe) #2518

Which version line?

v2 — current (@modelcontextprotocol/inspector@latest)

Which client?

All / shared core

Inspector version

2.8.0

Node version

24.14.1

Operating system (and browser, for the web client)

macOS 26.6

Transport

stdio

MCP server under inspection

I did not get to this point, the target server is https://github.com/jztan/pdf-mcp

Steps to reproduce

1. (optional) download fresh repo and cd to the repo ('git clone https://github.com/modelcontextprotocol/inspector.git')
2. Run 'cd inspector && npm install'

Expected behavior

Unknown, no error free build yet.

Actual behavior

~/usr/src/gitClones/llm-mcpItems > cd inspector && npm install

@modelcontextprotocol/inspector@2.8.0 postinstall
node scripts/install-clients.mjs

[install-clients] Installing dependencies for clients/web...
npm error code EALLOWSCRIPTS
npm error --allow-scripts is not allowed in project-scoped installs. Add the entries to the "allowScripts" field in package.json, or to .npmrc, instead.
npm error A complete log of this run can be found in: /Users/jlh/.npm/_logs/2026-09-28T01_26_10_941Z-debug-0.log
[install-clients] npm install failed in clients/web (exit 1).
npm error code 1
npm error path /Users/jlh/_usr/src/gitClones/llm-mcpItems/inspector
npm error command failed
npm error command sh -c node scripts/install-clients.mjs
npm error A complete log of this run can be found in: /Users/jlh/.npm/_logs/2026-09-28T01_26_10_245Z-debug-0.log
~/_usr/src/gitClones/llm-mcpItems/inspector > less /Users/jlh/.npm/_logs/2026-09-28T01_26_10_245Z-debug-0.log
~/usr/src/gitClones/llm-mcpItems/inspector > node --version
v24.14.1
~/usr/src/gitClones/llm-mcpItems/inspector >

Logs, errors, or screenshots

2026-09-28T01_26_10_245Z-debug-0.log

Already prototyped a fix?

no yet...

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).