[Bug]: failed to initialize server: (node:1404546) ExperimentalWarning: Importing JSON modules is an experimental feature

[medeirosjoaquim]

Version

0.1.3

App

• Cursor
• Windsurf
• VSCode
• VSCode Insiders
• Claude Desktop
• Other

Affected Models (if applicable)

• Claude 3.5 Sonnet
• Claude 3.7 Sonnet
• GPT-4a
• o4-mini
• Other

Bug Description

Can't use in Windsurf or Claude Code. Tried with node v.20 and node v.24, on macOs and Linux

Error:

Error: failed to initialize server: (node:1404546) ExperimentalWarning: Importing JSON modules is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)
/home/user/.npm/_npx/191c568aa03d4fb8/node_modules/@mongodb-js/oidc-plugin/dist/plugin.js:44 const openid_client_1 = require("openid-client"); ^ Error [ERR_REQUIRE_ESM]: require() of ES Module

[gagik]

Could you confirm that the npx version you're using is also updated when you switched to the v24 Node version?

The error seems related to the older Node versions so it seems like your NodeJS setup may not be selecting the correct one.

[github-actions]

Thanks for opening this issue. The ticket MCP-77 was created for internal tracking.

[pigd0g]

I needed to upgrade my node version to at least 22.12

[nirinchev]

With 0.2.0 we're correctly listing the minimum supported node version.