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fix(module): add shell:true for npx spawn on Windows #261

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Merged
HugoRCD merged 1 commit into from
May 19, 2026
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fix(module): add shell:true for npx spawn on Windows #261

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11 changes: 11 additions & 0 deletions .changeset/inspector-windows-spawn.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
---
"@nuxtjs/mcp-toolkit": patch
---

Fix "spawn npx ENOENT" error when launching the MCP Inspector on Windows.

Since the Node.js CVE-2024-27980 mitigation (Node 18.20.2 / 20.12.2), `child_process.spawn` no longer resolves `.cmd`/`.bat` shims on Windows without `shell: true`. This caused the DevTools "Launch Inspector" button to throw `ENOENT` on every Windows machine.

`shell: true` is now passed only when `process.platform === 'win32'`, leaving the default behaviour unchanged on Linux and macOS.

Closes #259.
1 change: 1 addition & 0 deletions packages/nuxt-mcp-toolkit/src/runtime/server/mcp/devtools/index.ts
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Expand Up @@ -193,6 +193,7 @@ async function launchMcpInspector(nuxt: Nuxt, options: ModuleOptions): Promise<v
], {
stdio: ['ignore', 'pipe', 'pipe'],
env,
shell: globalThis.process.platform === 'win32',
})

const childProcess = inspectorProcess
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