dos-play SKILL.md skillA
dos-play from jeong-sik/masc is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jeong-sik/masc/dos-play@git:20261027.fbf2f55Pins git:20261027.fbf2f55 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jeong-sik/masc
- Path
addons/dos-machine/skills/dos-play/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261027.fbf2f55, committed Oct 27, 2026
- First version recorded
- Oct 9, 2026
- Size
- 7,920 bytes
- Repository stars
- 4
- License
- MIT
Play the shared DOS machine with other Keepers — controller handoff, reading VGA screens through PNG images, choosing explicit input execution, the limits of settling observations, and where a game's own saves live.
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
# DOS play This attached Add-on provides a DOS machine shared with other Keepers. Time advances through machine execution steps, including idle wait clocks, only when someone calls a tool. Game facts — menus, key sequences, pitfalls — live in a Skill named after the game (`sangokushi-3` is the first). Where none exists, learn from the screens and report what repeated. ## Who is at the machine The observation's `controller` names who may move the machine. Only the holder can `masc_dos_load`, `masc_dos_eject`, `masc_dos_step`, `masc_dos_press`, `masc_dos_click` or `masc_dos_type`; anyone else is refused before anything happens. Watching (`masc_dos_screen`, `masc_dos_peek`) needs no controller. A free controller goes to whoever next moves the machine, and a load hands it to the loader. In a hotseat game several human players share the machine. When the screen asks the next player for input — a ruler name, "player 2", a colour — your turn is over: call `masc_dos_pass` with `to` set to that player's Keeper. The board post it makes @mentions them, which wakes them. Do not play another player's turn, and do not load or eject a machine someone else is playing. …
Read the whole file at its exact version.
How to install
mdr add jeong-sik/masc/dos-play@sha256:511078cddb84d717The line at the top of this page pins the label git:20261027.fbf2f55, 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_mdrv5pwk35jrkoev)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Oct 9, 2026 and Oct 27, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261027.fbf2f55 latest | 2026-10-27 | fbf2f55 | 7,920 B | A | view · diff |
| git:20261018.9163ebf | 2026-10-18 | 9163ebf | 7,361 B | A | view · diff |
| git:20261009.b566c6b | 2026-10-09 | b566c6b | 6,220 B | A | view · diff |
| git:20261009.f8e9399 | 2026-10-09 | f8e9399 | 6,114 B | A | view · diff |
| git:20261009.17e9bb6 | 2026-10-09 | 17e9bb6 | 5,736 B | A | view |
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 (7920 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
jeong-sik/masc · 4 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mdrv5pwk35jrkoev GET https://markdownregistry.com/api/v1/resolve?ref=jeong-sik/masc/dos-play GET https://markdownregistry.com/api/v1/blob/511078cddb84d717a63610309eb0a133fea891bc4427897ebf44aa4a8e4d191f
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.