Show HN: mcpc – Universal command-line client for Model Context Protocol (MCP)

Summary

mcpc : Universal MCP command-line client mcpc is a CLI for the Model Context Protocol (MCP) that maps MCP operations to intuitive commands for interactive shell use, scripts, and AI coding agents. mcpc is a Swiss Army knife for MCP. It is useful for inspecting servers, scripting, and enabling AI coding agents to use MCP "code mode" in shell. After all, UNIX-compatible shell script is THE most universal coding language. Key features: 🌎 Compatible - Works with any MCP server over Streamable HTTP or stdio. - Works with any MCP server over Streamable HTTP or stdio. 🔄 Persistent sessions - Keep multiple server connections alive simultaneously. - Keep multiple server connections alive simultaneously. 🔧 Strong MCP support - Instructions, tools, resources, prompts, dynamic discovery. - Instructions, tools, resources, prompts, dynamic discovery. 🔌 Code mode - JSON output enables integration with CLI tools like jq and scripting. - JSON output enables integration with CLI tools like and scripting. 🤖 AI sandboxing - MCP proxy server to securely access authenticated sessions from AI-generated code. - MCP proxy server to securely access authenticated sessions from AI-generated code. 🔒 Secure - Full OAuth 2.1 support, OS keychain for credentials storage. - Full OAuth 2.1 support, OS keychain for credentials storage. 🪶 Lightweight - Minimal dependencies, works on Mac/Win/Linux, doesn't use LLMs on its own. Table of contents Install npm install -g @apify/mcpc Linux users: mcpc uses the OS keychain for secure credential storage, which requires the Libsecret library. Install it with: # Debian/Ubuntu sudo apt-get update sudo apt-get install libsecret-1-0 # Fedora/RHEL/CentOS sudo dnf install libsecret # Arch Linux sudo pacman -S libsecret Quickstart # List all active sessions and saved authentication profiles mcpc # Login to remote MCP server and save OAuth credentials for future use mcpc mcp.apify.com login # Show information about a remote MCP server mcpc mcp.apify.com # Use JSON mod...