frontend-performance SKILL.md skillA
frontend-performance from nahid-sparktales/agent-dispatcher is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nahid-sparktales/agent-dispatcher/frontend-performance@git:20260919.a0d4f55Pins git:20260919.a0d4f55 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nahid-sparktales/agent-dispatcher
- Path
skills/frontend/frontend-performance/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.a0d4f55, committed Sep 19, 2026
- Size
- 8,186 bytes
- Repository stars
- 58
- License
- MIT
Make a page measurably faster — pick the metric that is actually bad, measure it under stated conditions, find the real cause, apply the fix that moves that specific metric, re-measure the same way. Use when a page is called slow, when LCP, CLS, INP, TTFB, a Lighthouse score or bundle size is named, when a bundle has grown, or before claiming an optimization worked. Not for backend query or API latency, not for choosing a framework, and not a substitute for checking the page still works…
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 Most frontend performance work fails in one of two ways: optimizing something that was never the bottleneck, or reporting an improvement that was measurement noise. Both are avoided by deciding what to measure before touching anything. ## When this fires A page is reported slow, a Core Web Vital is out of range, a bundle grew, or a change is about to be described as a performance improvement. It does not fire for slowness that traces to a server response or a database query — that is backend work, and the giveaway is a bad TTFB with a fast render once bytes arrive. ## What actually gets measured Three Core Web Vitals, at the **75th percentile of real page loads, segmented by device class**: | Metric | Good | Poor above | What it is | | --- | --- | --- | --- | | LCP | ≤ 2.5s | 4.0s | When the largest content element finishes rendering | | CLS | ≤ 0.1 | 0.25 | Unexpected layout movement over the page's life | | INP | ≤ 200ms | 500ms | Worst-case latency from an interaction to its next paint | TTFB and FCP are diagnostics, not Core Web Vitals — useful for locating a cause, not for grading. …
Read the whole file at its exact version.
How to install
mdr add nahid-sparktales/agent-dispatcher/frontend-performance@sha256:bcddd2654b5df107The line at the top of this page pins the label git:20260919.a0d4f55, 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_li62lumf32dxdzd5)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 19, 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 (8186 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
nahid-sparktales/agent-dispatcher · 58 stars · license MIT · pushed 2026-10-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_li62lumf32dxdzd5 GET https://markdownregistry.com/api/v1/resolve?ref=nahid-sparktales/agent-dispatcher/frontend-performance GET https://markdownregistry.com/api/v1/blob/bcddd2654b5df107f4f60b3d34c49382219ed5021de58500d06bc33d66ea6724
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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