readonly SKILL.md skillA
readonly from checkpickerupper/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add checkpickerupper/skills/readonly@git:20261021.61c15fbPins git:20261021.61c15fb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- checkpickerupper/skills
- Path
skills/engineering/readonly/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261021.61c15fb, committed Oct 21, 2026
- First version recorded
- Jul 20, 2026
- Size
- 5,138 bytes
- Repository stars
- 6
- License
- MIT
User-invoked modifier for evidence-first read-only investigation. Use when the user appends /readonly to a question or another skill request: answer by checking the codebase and available read-only sources, do not implement, do not open issues, do not mutate local or remote state, and do not guess with 'likely' or 'probably' when evidence can be gathered.
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
# /readonly Prove, don't guess. Investigate with every read-only source that can answer the question, then stop before changing anything. This is a user-invoked modifier. Use it when the user explicitly writes `/readonly`, including beside another skill name. ## Core rule When `/readonly` is present, treat every other instruction or invoked skill as diagnostic only. Run its reading, tracing, classification, and reasoning steps, but skip any step that edits files, opens issues, changes configuration, creates branches, commits, pushes, posts comments, deploys, installs, regenerates, or otherwise mutates local or remote state. ## Procedure 1. **Freeze the state.** Record `git status --short` and the current branch before investigating. Existing dirty files are user state; do not normalize, revert, stage, or explain them away. 2. **Find the answer in the repo first.** Read code, docs, tests, scripts, generated descriptors, config, git history, issues, and PRs as needed. Use fast search before narrow reads. …
Read the whole file at its exact version.
How to install
mdr add checkpickerupper/skills/readonly@sha256:ea47c7499d0e11f6The line at the top of this page pins the label git:20261021.61c15fb, 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_jltojk3bsqem755b)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 20, 2026 and Oct 21, 2026, about one every 93 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261021.61c15fb latest | 2026-10-21 | 61c15fb | 5,138 B | A | view · diff |
| git:20260720.10304e8 | 2026-07-20 | 10304e8 | 5,050 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 (5138 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
checkpickerupper/skills · 6 stars · license MIT · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jltojk3bsqem755b GET https://markdownregistry.com/api/v1/resolve?ref=checkpickerupper/skills/readonly GET https://markdownregistry.com/api/v1/blob/ea47c7499d0e11f64031ae6b54cfa01b6079ad8ab8d67855942923f1c88a343c
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.