creating-bookmarklets SKILL.md skillB
creating-bookmarklets from oaustegard/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add oaustegard/claude-skills/creating-bookmarklets@v1.0.3Pins v1.0.3 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- oaustegard/claude-skills
- Path
plugins/development-tools/skills/creating-bookmarklets/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.3, committed Jul 7, 2026
- Size
- 5,314 bytes
- Repository stars
- 158
- License
- MIT
Creates browser-executable JavaScript bookmarklets with strict formatting requirements. Use when users mention bookmarklets, browser utilities, dragging code to bookmarks bar, or need JavaScript that runs when clicked in the browser toolbar.
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
# Bookmarklet Creation
## Critical Requirements
### Comment Style - ABSOLUTE
**Use ONLY `/* */` comments. NEVER use `//` comments.**
Bookmark execution contexts fail with `//` style. Every comment must use block format.
```javascript
/* ✓ Correct */
const x = 5; /* inline */
/* ✗ Wrong - breaks bookmarklets */
// const x = 5;
const y = 10; // inline
```
### IIFE Wrapper
All bookmarklets must wrap in IIFE:
```javascript
(function() {
/* bookmarklet code */
})();
```
### Protocol Prefix
All delivered bookmarklets must begin with `javascript:` protocol:
```javascript
javascript:(function() {
/* bookmarklet code */
})();
```
This makes the code immediately usable without requiring manual modification during installation.
## Workflow
### 1. Generate Pretty-Printed Code
Create readable source with:
- 2-space indentation
- Descriptive variable names
- Block comments for key sections
- Logical organization
- **Prepend `javascript:` protocol to the code**
**This version with `javascript:` prefix gets stored in GitHub and shown to users, making it ready for installation without manual modification.**
### 2. Provide Installation
**Default approach - reference installer:**
…Read the whole file at its exact version.
How to install
mdr add oaustegard/claude-skills/creating-bookmarklets@sha256:9a23b60111613434The line at the top of this page pins the label v1.0.3, 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_ey2wpig6fdfepmyc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 7, 2026.
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5314 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
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
oaustegard/claude-skills · 158 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ey2wpig6fdfepmyc GET https://markdownregistry.com/api/v1/resolve?ref=oaustegard/claude-skills/creating-bookmarklets GET https://markdownregistry.com/api/v1/blob/9a23b60111613434009d9e0fd152dba5cdbcd7ddb8ce7dfb1866ee0776de3ed5
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.
More from oaustegard/claude-skills
Every file in oaustegard/claude-skills