020-agent-skill-authoring Cursor ruleA
020-agent-skill-authoring from wshobson/agents is a Cursor rule: instructions the Cursor agent follows in that repo.
mdr add wshobson/agents/.cursor/rules/020-agent-skill-authoring.mdc@git:20260913.1533e77Pins git:20260913.1533e77 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- Cursor rule
- Repository
- wshobson/agents
- Path
.cursor/rules/020-agent-skill-authoring.mdc- Versions recorded
- 3
- Latest version
- git:20260913.1533e77, committed Sep 13, 2026
- First version recorded
- May 29, 2026
- Size
- 1,483 bytes
- Repository stars
- 41,220
- License
- MIT
Authoring agent, skill, and command markdown for cross-harness portability.
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
# Authoring portable plugin content This content ships to Claude Code, Codex CLI, Cursor, OpenCode, the Antigravity CLI, and Pi. The adapter framework handles per-harness mechanics, but content choices affect portability. ## Frontmatter - Agents: `name`, `description` (with "Use when…" trigger), `model: opus|sonnet|haiku|inherit`, optional `tools:`, optional `color:`. - Skills: `name`, `description`. Other Anthropic SKILL.md fields are optional and respected only on Claude Code. - Commands: `description`, `argument-hint`. ## Body - Use action verbs, not tool-name vocabulary: prefer *"open the file"* over *"use the Read tool"*. The adapter rewrites a conservative set, but the unrewritten cases bleed through. - Cap skill body at ~8 KB. Push longer reference material into `skills/<name>/references/` files. Codex will hard-truncate at 8 KB anyway. - Don't name agents `default`, `worker`, or `explorer` — they collide with Codex built-ins. …
Read the whole file at its exact version.
How to install
mdr add wshobson/agents/.cursor/rules/020-agent-skill-authoring.mdc@sha256:11400d9a0309deddThe line at the top of this page pins the label git:20260913.1533e77, 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_tia45ceondpahy2t)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 29, 2026 and Sep 13, 2026, about one every 53 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260913.1533e77 latest | 2026-09-13 | 1533e77 | 1,483 B | A | view · diff |
| git:20260818.367cb6a | 2026-08-18 | 367cb6a | 1,475 B | A | view · diff |
| git:20260529.608c384 | 2026-05-29 | 608c384 | 1,297 B | A | view |
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (1483 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
wshobson/agents · 41,220 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tia45ceondpahy2t GET https://markdownregistry.com/api/v1/resolve?ref=wshobson/agents/.cursor/rules/020-agent-skill-authoring.mdc GET https://markdownregistry.com/api/v1/blob/11400d9a0309dedd931e91b780cbb985d01c5e1e414c0acc3ba19eefefa3bdca
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: Cursor rules vs AGENTS.md · which agent file does what.