threejs-perf SKILL.md skillA
threejs-perf from paprika3d/paprika3d is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add paprika3d/paprika3d/threejs-perf@git:20261029.bed5213Pins git:20261029.bed5213 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- paprika3d/paprika3d
- Path
skills/threejs-perf/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261029.bed5213, committed Oct 29, 2026
- Size
- 1,486 bytes
- Repository stars
- 6
- License
- Apache-2.0
Profile a three.js or WebGL page from a coding agent - frame time (fps), draw calls, triangles and asset size against a budget, and which objects or settings cost the frame. Use when it stutters, has low fps or loads slowly. paprika3d's perf tool.
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
# Profile a three.js page
After `open`, `perf` measures the frame against a budget (`desktop` by default; `site` for a 3D website, which also times the first scene frame and counts script and asset megabytes):
- `costs: true` lists triangles, shadow casters, draw calls and texture megabytes by named group.
- `variants` measures each change on a fresh page against the baseline, in one call: `{ label: "no trees", hide: ["trees"] }`, a `pixelRatio`, `code` run with `renderer` and `scene` (shadows off, a material swapped), or a `query` the page reads at load.
- `throttle: 4` slows the page's JavaScript as on a weak laptop.
`perf` with `optimize: true` is for a frame `perf` says is over budget, or a user who asks about performance: it tries the `@paprika3d/three-runtime` switches, keeps those that help without changing the picture and writes `game-runtime.json` (`../threejs-game/references/optimize.md`). A page that opens with no `Slow start` line and stays within budget needs neither.
If `open` and `perf` are not among your tools, the paprika3d MCP server is not installed: it runs as `npx -y paprika3d serve` (stdio), and https://paprika3d.com/docs/install has each agent's line.Read the whole file at its exact version.
How to install
mdr add paprika3d/paprika3d/threejs-perf@sha256:6058ba6159013760The line at the top of this page pins the label git:20261029.bed5213, 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_s7kkuxuus5jdrztb)
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Versions
The registry has recorded 1 version of this file, committed on Oct 29, 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 (1486 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
paprika3d/paprika3d · 6 stars · license Apache-2.0 · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_s7kkuxuus5jdrztb GET https://markdownregistry.com/api/v1/resolve?ref=paprika3d/paprika3d/threejs-perf GET https://markdownregistry.com/api/v1/blob/6058ba6159013760fc8edc69d7fd47367e0cef9f350ebf071cc0edb821f769a7
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.