01 · ABOUT

What @wong2/mcp-cli does

mcp-cli is a command-line inspector for the Model Context Protocol that runs MCP servers from various sources or connects to an already-running server over Streamable HTTP or SSE. It lists and calls tools, reads resources and prompts, supports OAuth for SSE and Streamable HTTP servers, and offers a non-interactive mode for scripting.

Why teams reach for it: Inspects an MCP server straight from a terminal with a single npx invocation, reusing the Claude Desktop config file format and adding a non-interactive mode that runs one tool, resource or prompt for scripting.

CLI toolOpen SourceJavaScriptMCP Client
02 · TECHNICAL SPECIFICATIONS

How @wong2/mcp-cli compares

Fields the vendor doesn't document are left blank here rather than guessed — a blank means nothing verified, not a "no."

Interface
CLI
Transports
stdio, SSE, Streamable HTTP
Oauth Flow Testing
Yes
Llm Playground
No
Tests Client Features
None
Conformance Testing
None
Install Method
npx
Requires Account
No
Open Source
Yes
03 · NEW TO MCP?
How will you inspect behavior and fix failures?

Inspectors & debugging tools let developers see what's happening inside an MCP connection and fix problems when something breaks.