pretext SKILL.md skillB
pretext from mateaix/mateclaw is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mateaix/mateclaw/pretext@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mateaix/mateclaw
- Path
mateclaw-server/src/main/resources/skills/pretext/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed May 1, 2026
- Size
- 14,027 bytes
- Repository stars
- 1,185
- License
- Apache-2.0
Use when building creative browser demos with @chenglou/pretext — DOM-free.
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
# Pretext Creative Demos ## Overview [`@chenglou/pretext`](https://github.com/chenglou/pretext) is a 15KB zero-dependency TypeScript library by Cheng Lou (React core, ReasonML, Midjourney) for **DOM-free multiline text measurement and layout**. It does one thing: given `(text, font, width)`, return the line breaks, per-line widths, per-grapheme positions, and total height — all via canvas measurement, no reflow. That sounds like plumbing. It is not. Because it is fast and geometric, it is a **creative primitive**: you can reflow paragraphs around a moving sprite at 60fps, build games whose level geometry is made of real words, drive ASCII logos through prose, shatter text into particles with exact per-grapheme starting positions, or pack shrink-wrapped multiline UI without any `getBoundingClientRect` thrash. This skill exists so the agent can make **cool demos** with it — the kind people post to X. See `pretext.cool` and `chenglou.me/pretext` for the community demo corpus. ## When to Use Use when the user asks for: - A "pretext demo" / "cool pretext thing" / "text-as-X" - Text flowing around a moving shape (hero sections, editorial layouts, animated long-form pages) …
Read the whole file at its exact version.
How to install
mdr add mateaix/mateclaw/pretext@sha256:86dff8a2917901c9The line at the top of this page pins the label v1.0.0, 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_lwvule4lby2a65bp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 1, 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 (14027 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
mateaix/mateclaw · 1,185 stars · license Apache-2.0 · pushed 2026-11-05 · branch dev
API
GET https://markdownregistry.com/api/v1/artifacts/art_lwvule4lby2a65bp GET https://markdownregistry.com/api/v1/resolve?ref=mateaix/mateclaw/pretext GET https://markdownregistry.com/api/v1/blob/86dff8a2917901c931618e7a3ad7db14397a81db49e8fe7b8448a5cadd382fef
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.
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