Best Claude Code MCP servers

A Claude Code plugin that enforces a no-em-dash house style: it adds a system prompt rule, reminds the model after any write that introduces an em dash, and shows a toast when a reply uses one. Installed via the claude-code-mods marketplace or loaded from a checkout with --plugin-dir.

A Claude Code function-hook plugin that tracks PRs touched by the session, shows their check status above the prompt, toasts on green/red/merged states, and blocks foreground CI polling loops. Installable from the narrowstacks/claude-code-mods marketplace.

Function-hook mod for Claude Code that quotes glob flags zsh would expand (--include=*.ts, find -name *.ts) and keeps a grep that finds nothing from failing a cd ... && grep chain.

Function-hook mod for Claude Code that makes the spinner show what is actually running: the Bash command or description, ssh host, file being read or edited, search, subagent or MCP tool, a tool's own elapsed time after 15s, and "Waiting for signing approval" for signed git commits or tags.

Asks before a destructive command runs on another machine over ssh (restarts, deletes, kills, reboots)

Live plan, % done, time left and a one-line 'now' for long tasks, in a pane and on the working row.

Steers npm/npx/yarn to the package manager the repo's lockfile names (bun or pnpm), bun where there is none

A Claude Code function-hook mod that only activates in Xcode project folders (.xcodeproj/.xcworkspace). It shows a single line with the last build or test result (flagging runs that executed 0 tests) and the booted simulator, blocks a second concurrent xcodebuild, re-checks on /cd, and keeps each project's last result.

A Claude Code mod that displays a band above the prompt showing running background tasks, their elapsed time and last output line.

Function-hook Claude Code mod that blocks gh pr create / gt submit when a repo with an [Unreleased] changelog has no entry on the branch, and (where the repo asks for it) when the PR carries no labels.

A Claude Code function-hook plugin that adds a /worktrees pane listing each git worktree with branch, uncommitted changes, ahead/behind and PR state, and can remove clean worktrees whose PR is merged or closed.

One clean line per task list above the prompt, filled from Claude's own todo tools, same look in the terminal and the desktop app