Claude Code mod

fm

Firstmate Calm for Claude Code: the sailboat working animation and conversation-only transcript presentation, sharing the per-home config/calm preference with the Pi Calm extension. Its hooks module may load through CLAUDE_CODE_ENABLE_FUNCTION_HOOKS or Claude Code's tengu_plugin_hooks_modules rollout flag, but the mod activates only when CLAUDE_CODE_ENABLE_FUNCTION_HOOKS is exactly 1 and is otherwise a complete no-op.

1 starsWorkflow modsValidates on Claude Code 2.1.316 Source

Install

From source
git clone https://github.com/lmuehleisen/xo.git
claude --plugin-dir ./xo/.claude/mods/firstmate-calm

The repo has no marketplace file, so load the plugin folder directly with --plugin-dir.

What it can access

Reach
L2Writes or runs: writes files, reads files, reads env vars, reads settings, reads the transcript, persists state, draws
Draws in
SpinnerToolUseToolResultToolGroupUserMessageAssistantMessage
Hooks
session.startcommand.runconfig.setturn.stepui.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.
Claude Code docs

Details

Repository
lmuehleisen/xo
Folder
.claude/mods/firstmate-calm
Author
Firstmate
Type
Workflow mods
License
MIT
Last updated
1 November 2026
Listed in
awesome-claude-code-mods

FAQ

What is fm?

Firstmate Calm for Claude Code: the sailboat working animation and conversation-only transcript presentation, sharing the per-home config/calm preference with the Pi Calm extension. Its hooks module may load through CLAUDE_CODE_ENABLE_FUNCTION_HOOKS or Claude Code's tengu_plugin_hooks_modules rollout flag, but the mod activates only when CLAUDE_CODE_ENABLE_FUNCTION_HOOKS is exactly 1 and is otherwise a complete no-op. It is a mod for Claude Code, from lmuehleisen/xo on GitHub.

What can the fm mod access?

Its widest reach is "writes or runs" (writes files, reads files, reads env vars, reads settings, reads the transcript, persists state, draws). It draws in Spinner, ToolUse, ToolResult, ToolGroup, UserMessage, AssistantMessage. Like any mod, it runs with your permissions.

How do I install fm?

Clone lmuehleisen/xo and start Claude Code with --plugin-dir pointing at the mod's folder (.claude/mods/firstmate-calm).

Is fm popular?

lmuehleisen/xo has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 1 November 2026.

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