whytype

active

Give coding agents the TypeScript compiler's actual reasoning — an MCP server and CLI that turn type errors into because-chains pointing at the declaration to fix. Also a library: explain-trees, inference bindings, conditional-type traces.

Code-only MCP server: no hosted endpoint, so you install and run it yourself. It is not probed, graded or counted in our reachability statistics.

Get it

Repository: github.com/zeelib1/whytype
Package: npm: whytype
Run (stdio): npx -y whytype
The usual command for this package registry; check the repository README for required settings.
License: MIT
Last update: 2026-08-18
Homepage: github.com/zeelib1/whytype#readme

typescript mcp mcp-server claude-code cursor ai-agents typescript-errors diagnostics compiler developer-tools

Listed in

npm · source

Run this server as a hosted endpoint? Submit the endpoint and it moves to the remote directory, where it is probed and graded.