Runtime Support summarizes how many runtime families appear across local manifests, Docker files, and CI configuration. It helps identify mixed toolchains before a release.

Quick start

npm install
npm test
npm start

Use inspect_runtime_support with a project inside RUNTIME_SUPPORT_ROOT.

Limits

The output contains counts and runtime family signals only. Versions, dependency names, paths, source text, and environment values are suppressed.

Premium tools

These tools need a license key:

runtime_support_matrix

Buy a key at https://mcp-marketplace.io/server/io-github-mrfentmen-runtime-support-mcp and set it in your MCP client config:

"env": { "MCP_LICENSE_KEY": "mcp_live_..." }

The key is checked against MCP Marketplace, cached for 24 hours, and keeps working offline once one check has succeeded. Every other tool on this server stays free.