Console and outputs mocking library

Standard input/output manager for Node.js

Run MCP stdio servers over SSE, Streamable HTTP or visa versa

A replacement for process.exit that ensures stdio are fully drained before exiting.

Schema validation for the mutation server protocol (MSP).

a built-in tap extension for t.spawn()

MCP server that exercises all the features of the MCP protocol

Run script easy!

spawn processes the way the npm cli likes to do

MCP server for loading and extracting text from PDF files with chunked pagination and interactive viewer

Standard input/output streams for Bare

MCP client bridge: connects to MCP servers and registers their tools on ctx.tools

Tailwind CSS Language Server

This library provides abstractions and convenience methods over Javy's built-in functions.

Run a child as if it's the foreground process. Give it stdio. Exit when it exits.

A zero-dependency testing & inspection toolkit for Model Context Protocol (MCP) servers: in-memory and stdio test clients, fluent tool-result assertions, input-schema validation, and an automated conformance checker. Library + CLI.

Mock Command Line Applications

Utility for running commands inside Netlify Build

A TypeScript SSE proxy for MCP servers that use stdio transport.

Transcend MCP Server — unified server with all domain tools.