What is mcp-gaps?
mcp-gaps is a Claude Code mod by ryanraffel-nextroll that 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. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | ryanraffel-nextroll |
| Repository | ryanraffel-nextroll/claude-code-mods |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Low risk (84/100) |
| Rank | #4,479 of 5,272 Claude Code mods; #1,838 in Interface |
| Last commit | 2026-10-05 |
| Hooks | 6 events |
| Sees | /"^mcp__"/ calls, every prompt |
| Draws on | Pane |
Is mcp-gaps safe to install?
mcp-gaps scores 84/100 on the MCPMods security check: Low risk. Things to review: watches every prompt or event. It passed 6 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Watches every prompt or event | Review |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.now | |
$.command.register | |
$.state.get | |
$.state.set | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
How do I install mcp-gaps?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/ryanraffel-nextroll/claude-code-mods claude plugin validate ./claude-code-mods/plugins/mcp-gaps
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add ryanraffel-nextroll/claude-code-mods && claude plugin install mcp-gaps@claude-code-mods
Or ask Claude to set it up
Paste this into Claude Code and it installs mcp-gaps for you:
Install the "mcp-gaps" Claude Code mod from https://github.com/ryanraffel-nextroll/claude-code-mods/tree/main/plugins/mcp-gaps. Run claude plugin validate on it first and show me what it can access before you enable it.