mcp-harness and mcp-test-client
Both tools are TypeScript testing utilities for MCP servers, but `gabry-ts/mcp-harness` is an in-memory toolkit specifically inspired by Supertest, suggesting a focus on HTTP-like request/response testing within the same process, while `crazyrabbitLTC/mcp-test-client` is a more general "testing utility" which could imply a broader range of testing capabilities including, but not limited to, in-memory testing.
About mcp-harness
gabry-ts/mcp-harness
In-memory testing toolkit for MCP servers in TypeScript - supertest for MCP
About mcp-test-client
crazyrabbitLTC/mcp-test-client
MCP Test Client is a TypeScript testing utility for Model Context Protocol (MCP) servers.
Provides assertion utilities and a fluent API for validating tool availability and responses in test suites, with built-in process spawning to launch MCP servers via stdio transport. Integrates directly with testing frameworks like Vitest/Jest through async lifecycle hooks, and includes a mock calculator server reference implementation for learning and validation.
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