Markdown Rendering

Community

matyasstoch

markdown-rendering

How to reliably open a markdown file in a cmux right pane without it rendering blank. Use whenever opening/showing/rendering a .md file in cmux's right pane via `cmux markdown open`. Covers the move-surface blank-render bug and the only two reliable approaches — open it correctly the first time, or close the existing right pane(s) first then open a fresh right pane.

Overview

Publisher	matyasstoch
Repository	`david-skills`
Skill name	`markdown-rendering`
Stars	61
Forks	11
Bundled files	Instructions only
Links	Skill source Repository

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.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by matyasstoch on GitHub. Read the source before you install it.

Installation

Install the Markdown Rendering 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/matyasstoch/david-skills/tree/main/skills/markdown-rendering
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/matyasstoch/david-skills.git /tmp/david-skills
mkdir -p .claude/skills
cp -r /tmp/david-skills/skills/markdown-rendering .claude/skills/markdown-rendering

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

Use it in TypingMind

Enable Markdown Rendering 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 Markdown Rendering 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 Markdown Rendering 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.

Markdown Rendering in cmux

The Problem

cmux markdown open defaults to spawning a brand-new pane every time, even with --direction right. The common "fix" — moving the new markdown surface into the existing right pane with move-surface — bugs out: the moved viewer renders BLANK. The surface keeps type=markdown and looks healthy, but shows nothing.

So you get stuck: either a stray extra pane, or a blank viewer after moving it.

The Rule

You have exactly two reliable options. Never move-surface a markdown viewer — that is the path that bugs.

Option A — Open it right on the first try

If there is no usable right pane yet, just let cmux create one and leave it where it lands:

bash
cmux markdown open /abs/path/file.md --direction right --focus false

Do NOT then move it. If it spawned where you want it, you're done.

Option B — Close existing right pane(s), then open fresh

If there are other right panes in the way (and they're unused or irrelevant), close them first, then open the markdown fresh as a new right pane:

bash
# 1. find panes in THIS workspace
cmux list-panes --workspace "$CMUX_WORKSPACE_ID"

# 2. close the unused/irrelevant right pane(s) by closing their surfaces
cmux list-pane-surfaces --pane pane:NN
cmux close-surface --surface surface:XX     # repeat per surface in that pane

# 3. THEN open the markdown fresh — it creates its own clean right pane
cmux markdown open /abs/path/file.md --direction right --focus false

Hard Rules

Never move-surface a markdown viewer. It renders blank afterward. This is the core bug this skill exists for.
Open it correctly the first time (Option A), OR close the conflicting right pane(s) and open a fresh right pane from scratch (Option B).
Only close panes that are unused or irrelevant — never close a pane the user is working in.
Always anchor to $CMUX_WORKSPACE_ID; never assume the visually focused workspace.
Pass --focus false so you don't steal the user's focus.
You can't screenshot/read a markdown surface to verify it. If unsure it rendered, ask the user.

Frequently asked questions

What does the Markdown Rendering AI skill do?

Why use Markdown Rendering on TypingMind?

Because you install it once and use it with any model. Markdown Rendering 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 Markdown Rendering in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/matyasstoch/david-skills/tree/main/skills/markdown-rendering. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Markdown Rendering?

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 Markdown Rendering?

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

Is the Markdown Rendering AI skill free?

It is published on GitHub by matyasstoch. 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

Markdown Rendering in cmux

The Problem

The Rule

Option A — Open it right on the first try

Option B — Close existing right pane(s), then open fresh

Hard Rules

Frequently asked questions

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