GitHub list of ChatGPT Plugin Directory
plugin

MCP Boundary

MCP engineering at the seam

A pure-skill engineering plugin that traces active callers and entrypoints, implements or migrates the real MCP path, reconciles source with package and activated runtime, and keeps host claims inside qualifying observations.

Install

  1. 1Add it in ChatGPT

    Open Plugins in the ChatGPT sidebar (web or desktop), search for “MCP Boundary” and select +. You'll be asked to sign in to any connected service on first use. Then type @ in a chat to call it.

Skills 1

  • MCP Boundary

    Complete MCP work on the live path

Things to ask

  • “Use $mcp-boundary to trace and repair the active MCP path, then verify the requested behavior.”
  • “Use $mcp-boundary to migrate this MCP implementation and retire superseded active paths.”
  • “Use $mcp-boundary to reconcile source, package, runtime, and named-host behavior without overstating evidence.”

Disconnect or uninstall

  1. 1In ChatGPT

    Disconnect an account in Settings → Apps or Plugins. To remove the plugin itself, open MCP Boundary in the Plugin Directory and select Uninstall plugin. Uninstalling can disconnect every account connected through it, and plugins your workspace installs may not offer the option.

  2. 2In Codex

    Run /plugins in the Codex CLI, select the plugin and uninstall it, or press Space to turn it off.

MCP Boundary alternatives