Test MCP Servers with mcpc

Drive mcpc 0.7.x as the operator-facing harness for any MCP server — stdio or Streamable HTTP. This skill owns the released CLI contract, session-first command shape, JSON scripting, task execution, protocol-version probing, skills extension verification, and cleanup. It does not own writing the server or client itself.

When to use this skill

• Connecting to a real MCP server over stdio or Streamable HTTP and verifying the live surface with mcpc connect … @session
• Inspecting tools, prompts, resources, directory resources, templates, skills, logging, subscriptions, or instructions from mcpc
• Reproducing auth, proxy, cleanup, task, protocol-version, or transport failures with the released mcpc 0.7.x CLI
• Scripting repeatable smoke checks in --json mode, including CI assertions on exit codes and isError
• Comparing a local stdio server against a deployed Streamable HTTP target during release verification
• Translating pre-0.2.0 target-first examples or removed 0.2.x-era commands to current syntax

Do NOT use this skill when

• Building or refactoring server code → use build-mcp-use-server for mcp-use servers; for raw @modelcontextprotocol/sdk servers follow the SDK's own docs
• Building or refactoring client/agent code → out of scope; this skill only drives mcpc
• Running an agentic-quality / hardening / context-budget audit beyond CLI testing → use audit-agentic-mcp
• Porting an existing v1 server to v2 → out of scope; follow the SDK's own migration guide