Best Claude Code MCP servers

Specialists ships two Claude Code plugins in the xtrm marketplace. specialists exposes specialist activation as MCP tools and injects live activation state at session start. specialists-ui is optional and draws the rows specialists raises as teammate-style transcript rows.

A Claude Code plugin that shows unread AILANG fleet messages as a band above the prompt with count and newest title, plus an /ail-inbox pane with Ack and arrival toasts.

A Claude Code plugin hook that warns when git add/stash/checkout/restore/reset may sweep dirty files this session did not write — a toast for the person, a note in the model's context; never blocks. Aimed at shared checkouts with several agents.

Specialists is an agent-mind runtime with Claude Code plugins (specialists, specialists-ui) that expose specialist activation as MCP tools, draw a fleet band and pane, and deliver channel wakes on activation events.

A Claude Code mod that shows a live pane of AILANG code as it is written: after each edit of a .ail file it runs `ailang iface` and `ailang check` and displays the module's functions, their types and effect rows, plus any type errors, keeping the last good signatures beside a broken edit.

Claude Code plugin that bridges atc inbox messages into a session and reports status back to the atc multi-agent terminal orchestrator.

AILANG look for Claude Code: the AILANG version beside the prompt hint, compiler-flavoured spinner words (Unifying…, Inferring effects…), and /ailang for a pane with the logo.

Claude Code plugin that renders a status line showing the most recently touched in-progress AILANG sprint, its passed milestones and the next one.

A Claude Code mod that keeps a live pane of the GitHub pull requests a session touches: CI, review, conflicts, merge. You see when the PR Claude opened goes green, gets a review or hits a conflict, without asking.

After Claude edits or writes a .ail file, runs `ailang check` from the project root and adds any errors to what the model reads after the tool result, so it sees its own type errors without spending a turn. Works in interactive and headless (claude -p) sessions. Requires the `ailang` binary on PATH.

Claude Code plugin that runs CI gates (gofmt, make lint, file-size checks) before git push / gh pr create|merge and blocks the push on failure.

miod is a Claude Code mod that generates original MIDI music on the fly as the agent works, mapping moods to agent activity (thinking, editing, testing, shipping, failing) with a live status line and wave visualization.