cmux-markdown SKILL.md skillA
cmux-markdown from basicmachines-co/basic-memory is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add basicmachines-co/basic-memory/cmux-markdown@git:20260823.9007836Pins git:20260823.9007836 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- basicmachines-co/basic-memory
- Path
.agents/skills/cmux-markdown/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260823.9007836, committed Aug 23, 2026
- Size
- 2,107 bytes
- Repository stars
- 4,440
- License
- AGPL-3.0
Open markdown files in a formatted viewer panel with live reload. Use when you need to display plans, documentation, or notes alongside the terminal with rich rendering (headings, code blocks, tables, lists).
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Markdown Viewer with cmux
Write a `.md` file, open it in a panel, and the panel re-renders whenever the file changes on disk. Use it for agent plans and task lists alongside the terminal, documentation and changelogs while working, and notes another process updates progressively.
```bash
cmux markdown open plan.md # split next to the current terminal
cmux markdown open /path/to/PLAN.md
cmux markdown open design.md --workspace workspace:2 # also --surface, --window
```
Relative paths resolve against the caller's cwd and `~` expands; the resolved absolute path comes back in the output.
## Agent usage
Write the full plan file first, then open it, so the panel never shows a partially written file. After that, overwrite or append freely: each write triggers a re-render, and atomic replacement (editor saves, `sed -i`, VS Code) is handled.
To instruct coding agents in a project, add to its `AGENTS.md`:
```markdown
## Plan Display
When creating a plan or task list, write it to a `.md` file and open it in cmux:
cmux markdown open plan.md
The panel renders markdown with rich formatting and auto-updates when the file changes.
```
## Rendering
…Read the whole file at its exact version.
How to install
mdr add basicmachines-co/basic-memory/cmux-markdown@sha256:6ca591db043b5dd3The line at the top of this page pins the label git:20260823.9007836, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3dfl27kdp63zr7qt)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 23, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2107 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
basicmachines-co/basic-memory · 4,440 stars · license AGPL-3.0 · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3dfl27kdp63zr7qt GET https://markdownregistry.com/api/v1/resolve?ref=basicmachines-co/basic-memory/cmux-markdown GET https://markdownregistry.com/api/v1/blob/6ca591db043b5dd3db79f637431e28a26712a0fdae7fb3055a40df72ab8793d1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.