observe-act-verify SKILL.md skillA
observe-act-verify 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/observe-act-verify@git:20260908.f8c4c83Pins git:20260908.f8c4c83 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jeong-sik/masc
- Path
skills/observe-act-verify/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260908.f8c4c83, committed Sep 8, 2026
- First version recorded
- Sep 8, 2026
- Size
- 7,808 bytes
- Repository stars
- 5
- License
- MIT
Learn and operate an unfamiliar turn-based interface using screen observation, ordinary input, checkpoints, and verified state changes.
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
# Observe, act, verify Use this when the next action depends on an unfamiliar game or application screen. Use the environment's existing observation, image-reading, input and save tools; a new domain-specific tool is not needed for each menu command. ## Discover a transition Capture the current surface and its identity: application/session, frame or revision, and image artifact. Read the visible prompt, selected item and relevant values. An OCR interpretation is a hypothesis: preserve uncertain text as uncertain, and prefer an unambiguous option number over a guessed translation. When asking another model to read an image, first ask for the visible text, prompt, selection and values without supplying the screen you expect to see. Compare that independent reading with the prior state afterward. An expected outcome in the question can bias the reading toward an outcome the image does not show. …
Read the whole file at its exact version.
How to install
mdr add jeong-sik/masc/observe-act-verify@sha256:ab49bf23af4474ecThe line at the top of this page pins the label git:20260908.f8c4c83, 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_wesrwcafrataynrq)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, all committed on Sep 8, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260908.f8c4c83 latest | 2026-09-08 | f8c4c83 | 7,808 B | A | view · diff |
| git:20260908.0b810a5 | 2026-09-08 | 0b810a5 | 7,150 B | A | view · diff |
| git:20260908.83c1542 | 2026-09-08 | 83c1542 | 6,510 B | A | view · diff |
| git:20260908.67f8bd5 | 2026-09-08 | 67f8bd5 | 5,319 B | A | view · diff |
| git:20260908.1e0a748 | 2026-09-08 | 1e0a748 | 4,444 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 (7808 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 · 5 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wesrwcafrataynrq GET https://markdownregistry.com/api/v1/resolve?ref=jeong-sik/masc/observe-act-verify GET https://markdownregistry.com/api/v1/blob/ab49bf23af4474ece1fbaa665b1eb7bcdc309c710a6bb232ba2e2eae466c3b88
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.