frontend-performance SKILL.md skillA
frontend-performance from shelra/shelracode is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add shelra/shelracode/frontend-performance@git:20261007.28cd67fPins git:20261007.28cd67f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- shelra/shelracode
- Path
docs/examples/extensions/skills/frontend-performance/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261007.28cd67f, committed Oct 7, 2026
- Size
- 1,119 bytes
- Repository stars
- 3
- License
- a license file GitHub does not identify
Diagnose UI freezes, slow rendering and layout thrashing in a frontend by measuring first. Use when the interface lags, scrolls badly or blocks while streaming output.
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
# Frontend performance 1. **Measure before changing anything.** Record how long a frame takes and what runs in it. A guess that is not backed by a measurement is a hypothesis, and must be reported as one. 2. **Find the cost that grows.** Compare a short session with a long one: a cost that grows with the transcript or the number of items is the usual cause of a freeze that appears "after a while". 3. **Check the render path for work that does not belong there**: synchronous file or process calls, recomputation on every token, subscriptions that are never cleaned up. 4. **Change one thing, measure again, keep the number.** Report before and after with the command that produced them. See [measuring](references/measuring.md) for what to record and how to report it.
Read the whole file at its exact version.
How to install
mdr add shelra/shelracode/frontend-performance@sha256:80ac57f1035b2857The line at the top of this page pins the label git:20261007.28cd67f, 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_koi5e7gqheyyuabd)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 7, 2026.
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 (1119 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
shelra/shelracode · 3 stars · license a license file GitHub does not identify · pushed 2026-10-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_koi5e7gqheyyuabd GET https://markdownregistry.com/api/v1/resolve?ref=shelra/shelracode/frontend-performance GET https://markdownregistry.com/api/v1/blob/80ac57f1035b2857c1827ed9e747b3099bcfacd58d00ac95f83913d3989ce610
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 shelra/shelracode
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