Claude Code mod
mcp-gaps
Logs every MCP tool call and flags likely MCP gaps: browser fallbacks, tool errors, and answers that say the MCP can't do something. /mcp-gaps opens a pane; /mcp-gaps report exports a paste-ready list.
Install
/plugin marketplace add ryanraffel-nextroll/claude-code-mods
/plugin install mcp-gaps@claude-code-modsMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L1Reads: reads mod state, persists state, draws
- Sees
- every prompt, /"^mcp__"/ calls
- Draws in
Pane- Hooks
session.startprompt.submittool.callturn.completecommand.runui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- ryanraffel-nextroll/claude-code-mods
- Folder
plugins/mcp-gaps- Marketplace
claude-code-mods- Author
- Ryan Raffel
- Last updated
- 5 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is mcp-gaps?
Logs every MCP tool call and flags likely MCP gaps: browser fallbacks, tool errors, and answers that say the MCP can't do something. /mcp-gaps opens a pane; /mcp-gaps report exports a paste-ready list. It is a mod for Claude Code, from ryanraffel-nextroll/claude-code-mods on GitHub.
What can the mcp-gaps mod access?
Its widest reach is "reads" (reads mod state, persists state, draws). It sees every prompt, /"^mcp__"/ calls. It draws in Pane. Like any mod, it runs with your permissions.
How do I install mcp-gaps?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add ryanraffel-nextroll/claude-code-mods and then /plugin install mcp-gaps@claude-code-mods.
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