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MCP Boundary

ChatGPT plugin

MCP engineering at the seam

View in ChatGPT directory

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.

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Movement

From our daily snapshots over the last 30 days.

Rank by placement

#5145of 8,79311places down24h9places up7d
#5,078#5,223#5,368#5,513Sep 27Oct 3Oct 9Oct 15Oct 21Oct 26

Rank in Developer tools

#437of 7424places down24h2places up7d
#428#441#454#467Sep 27Oct 3Oct 9Oct 15Oct 21Oct 26

In its category

How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.

Developer tools437th of 742 by placement
#PluginPosition7d
435ECZ-ID Agent Trust#514034places up
436Nexo YAML Iron#514427places up
437MCP BoundaryThis page#51459places up
438Development OS#514772places up
439castform#515228places up

All 742 Developer tools plugins

Example prompts

  • “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  • “Use $mcp-boundary to migrate this MCP implementation and retire superseded active paths.”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.”

Skills

  • mcp-boundary

    Complete MCP engineering work on the live path: build or repair servers and Apps, debug stdio or Streamable HTTP, migrate protocol/SDK/transport versions, reconcile source with package and activated runtime, inspect capability/effect authorization, and verify named-host claims without promoting weaker evidence. Use for real Model Context Protocol implementation, review, migration, runtime, or host-integration tasks. Do not use for ordinary non-MCP APIs, generic frontend work, or incidental product copy.

Categories
Made by
Yifei Fang · Website
Sign-in
On Install
Capabilities
Build and repair MCP implementations, Trace active protocol and transport paths, Migrate SDKs, revisions, and runtimes, Reconcile source, package, and activation, Verify named-host and effect claims
Availability
Available
Version
0.2.0
Keywords
mcp, model-context-protocol, engineering, migration, runtime, verification, codex
Created
September 13, 2026
More info
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