Node.js

https://nodejs.org/

1. 01beginnergithub-actionsnode

   Fail the build when published content stops being valid

   A CI step parses every code snippet a site publishes using the real tool for its declared format, so a snippet that stops being valid breaks the build instead of sitting published and wrong.

2. 02intermediatebashcurlnode

   Check that your API and MCP server still say what your website says

   A read-only script asserts that every machine-readable view of a site answers, that its MCP server completes a handshake and lists its tools, and that no private field appears in any public response.