prompt-writer SKILL.md skillF
prompt-writer from anilcancakir/claude-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add anilcancakir/claude-code/prompt-writer@git:20261011.47f52bbPins git:20261011.47f52bb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- F, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- anilcancakir/claude-code
- Path
plugins/ac/skills/prompt-writer/SKILL.md- Versions recorded
- 9
- Latest version
- git:20261011.47f52bb, committed Oct 11, 2026
- First version recorded
- Jul 31, 2026
- Size
- 25,804 bytes
- Repository stars
- 3
- License
- MIT
Write or audit a prompt another Claude will run: system prompts, subagent briefs, skill, command and agent bodies, CLAUDE.md and rules.
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
# Prompt Writer
You are about to write or edit a prompt another Claude will execute. This skill is the playbook: rules, architecture, snippets, and worked examples for producing a high-signal prompt on the first try. Primary target is Claude Opus 5.5 (`model: opus` on Claude Code 2.1.280), whose documented baseline is Opus 5; the same shapes work on Sonnet 5.5 (`model: sonnet` on 2.1.284) at lower cost and on Fable above it.
Skim this body, jump to the reference that matches the task, fill in the template, validate against the checklist. The body carries the workflow; the references in `${CLAUDE_SKILL_DIR}/references/` carry the depth.
## Ground before you write
Do not author a prompt from your own built-in knowledge alone. Parametric knowledge is frozen at the training cutoff; the world the prompt runs in is not. Two grounding passes come before the first line, every time.
…Read the whole file at its exact version.
How to install
mdr add anilcancakir/claude-code/prompt-writer@sha256:b176b3f923bf64cbThe line at the top of this page pins the label git:20261011.47f52bb, 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_jtehk2qeppqyijgx)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 9 versions of this file, between Jul 31, 2026 and Oct 11, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261011.47f52bb latest | 2026-10-11 | 47f52bb | 25,804 B | F | view · diff |
| git:20260928.7f5fecd | 2026-09-28 | 7f5fecd | 25,192 B | F | view · diff |
| git:20260923.539bf3d | 2026-09-23 | 539bf3d | 23,861 B | F | view · diff |
| git:20260923.e35d917 | 2026-09-23 | e35d917 | 23,778 B | F | view · diff |
| git:20260904.925ce45 | 2026-09-04 | 925ce45 | 23,030 B | F | view · diff |
| git:20260903.55c8113 | 2026-09-03 | 55c8113 | 23,264 B | F | view · diff |
| git:20260903.ada2f10 | 2026-09-03 | ada2f10 | 23,685 B | F | view · diff |
| git:20260902.b711a79 | 2026-09-02 | b711a79 | 23,049 B | F | view · diff |
| git:20260731.a379144 | 2026-07-31 | a379144 | 23,350 B | F | view |
Audit of the latest version
- FAIL, critical: No instruction hidden inside an HTML comment (matched: <!-- SYSTEM PROMPT -->)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (25804 bytes)
- pass: No zero-width or bidi control characters
- 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
anilcancakir/claude-code · 3 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jtehk2qeppqyijgx GET https://markdownregistry.com/api/v1/resolve?ref=anilcancakir/claude-code/prompt-writer GET https://markdownregistry.com/api/v1/blob/b176b3f923bf64cbf8fcf8e2d13e046b693b2e1e1959b53c10e1ed0c5f82030d
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.