Cmux Ghostty

OrganizationPopular

manaflow-ai

cmux-ghostty

Ghostty submodule and GhosttyKit workflow rules for cmux. Use when modifying the ghostty submodule, rebuilding GhosttyKit.xcframework, updating the parent submodule pointer, or documenting fork conflict notes.

Overview

Publisher	manaflow-ai
Repository	`cmux`
Skill name	`cmux-ghostty`
Stars	27.5K
Forks	2.4K
Bundled files	2
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
2 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by manaflow-ai on GitHub. Read the source before you install it.

Installation

Install the Cmux Ghostty AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/manaflow-ai/cmux/tree/main/skills/cmux-ghostty
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/manaflow-ai/cmux.git /tmp/cmux
mkdir -p .claude/skills
cp -r /tmp/cmux/skills/cmux-ghostty .claude/skills/cmux-ghostty

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Cmux Ghostty in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Cmux Ghostty on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Cmux Ghostty is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

cmux Ghostty

GhosttyKit builds

Always rebuild the xcframework with Release optimizations:

bash
cd ghostty && zig build -Demit-xcframework=true -Dxcframework-target=universal -Doptimize=ReleaseFast

Submodule workflow

Ghostty changes are committed in the ghostty submodule and pushed to the manaflow-ai/ghostty fork. Keep docs/ghostty-fork.md current with fork changes and conflict notes.

Always run git remote -v first and push to whichever remote is manaflow-ai/ghostty. .gitmodules sets the submodule URL to that fork, so in a normal checkout it is origin; older setups tracked upstream as origin and added the fork as manaflow. Substitute the right name below.

bash
cd ghostty
git remote -v                  # find the manaflow-ai/ghostty remote (usually origin)
git checkout -b <branch>
git add <files>
git commit -m "..."
git push origin <branch>

To pull in changes from upstream ghostty-org/ghostty, add it as an explicit remote first, since no checkout has it by default:

bash
cd ghostty
git remote add upstream https://github.com/ghostty-org/ghostty.git   # once
git fetch upstream
git checkout main
git merge upstream/main
git push origin main

Then record the new SHA in the parent repo:

bash
cd ..
git add ghostty
git commit -m "Update ghostty submodule"

Submodule safety

For any submodule (ghostty, vendor/bonsplit, homebrew-cmux), push the submodule commit to its remote branch before committing the updated pointer in the parent repo. Never commit on a detached HEAD or a temporary branch: the parent then points at a SHA unreachable from any remote branch, and a future checkout or CI job fails to fetch it.

Verify the commit is reachable from the branch the pointer should track, using the remote you just pushed to:

bash
cd ghostty && git fetch origin main && git merge-base --is-ancestor HEAD origin/main

Detailed reference

references/submodule-safety.md: the ordered safe sequence and fork documentation expectations.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

agents/openai.yaml1 KB
references/submodule-safety.md1 KB

Frequently asked questions

What does the Cmux Ghostty AI skill do?

Why use Cmux Ghostty on TypingMind?

Because you install it once and use it with any model. Cmux Ghostty is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Cmux Ghostty in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/manaflow-ai/cmux/tree/main/skills/cmux-ghostty. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Cmux Ghostty?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Cmux Ghostty?

As many as you like. As long as a model supports skills, you can use Cmux Ghostty with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Cmux Ghostty AI skill free?

It is published on GitHub by manaflow-ai. Check the repository for licensing terms. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

cmux Ghostty

GhosttyKit builds

Submodule workflow

Submodule safety

Detailed reference

Bundled files

Frequently asked questions

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