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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

#5248of 11,36042places down24h78places down7d
#5,078#5,223#5,368#5,513Oct 6Oct 12Oct 18Oct 24Oct 30Nov 4

Rank in Developer tools

#446of 9003places down24h4places down7d
#428#441#454#467Oct 6Oct 12Oct 18Oct 24Oct 30Nov 4

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 tools446th of 900 by placement
#PluginPosition7d
444ECZ-ID Agent Trust#524182places down
445Bubble#5244227places up
446MCP BoundaryThis page#524878places down
447Baseten#525084places down
448Macroscope#525220places up

All 900 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  • “Use $mcp-boundary to migrate this MCP implementation and retire superseded active paths.”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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