performance SKILL.md skillA
performance from darknecrocities/skillbuilder is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add darknecrocities/skillbuilder/performance@git:20261025.6dc09bdPins git:20261025.6dc09bd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- darknecrocities/skillbuilder
- Path
skills/performance/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261025.6dc09bd, committed Oct 25, 2026
- First version recorded
- Oct 25, 2026
- Size
- 3,978 bytes
- Repository stars
- 13
- License
- none declared
Performance profiling and optimization skill. Audits Core Web Vitals (LCP, CLS, INP), N+1 queries, bundle budgets, and memory leaks.
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
# Performance Profiling & Optimization (`/performance`)
> **Philosophy**: *Measure with evidence, not intuition. Eliminate N+1 query cascades, bound memory allocations, and enforce strict Core Web Vitals budgets. If it is not measured, it will degrade.*
This skill establishes performance optimization standards across frontend client bundles, Core Web Vitals, API latency budgets, memory leaks, and database query executions.
---
## 1. Performance Guardrails & Budgets
```mermaid
flowchart TD
subgraph FrontendBudgets["1. Frontend & Client Budgets"]
A["Core Web Vitals: LCP < 2.5s, CLS < 0.1, INP < 200ms"]
B["Initial JS Bundle Budget: < 150KB Gzip"]
C["Aspect-Ratio Reservation on All Media"]
end
subgraph NetworkBudgets["2. Network & Caching"]
D["API p95 Latency < 200ms"]
E["Bounded LRU Caches with TTL & Eviction"]
F["Immutable Cache Headers on Static Assets"]
end
subgraph DataBudgets["3. Datastore & Execution"]
G["Zero N+1 Query Cascades (Batch / Join Fetch)"]
H["Connection Pool Sizing <= 2 * CPU Cores"]
I["Zero Unbounded Loops in Event Handlers"]
end
…Read the whole file at its exact version.
How to install
mdr add darknecrocities/skillbuilder/performance@sha256:c5e4d4a088bf9c9cThe line at the top of this page pins the label git:20261025.6dc09bd, 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_bqd35n65ccyhrqer)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 25, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261025.6dc09bd latest | 2026-10-25 | 6dc09bd | 3,978 B | A | view · diff |
| git:20261025.debe22c | 2026-10-25 | debe22c | 2,039 B | A | view |
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 (3978 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
darknecrocities/skillbuilder · 13 stars · license none declared · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bqd35n65ccyhrqer GET https://markdownregistry.com/api/v1/resolve?ref=darknecrocities/skillbuilder/performance GET https://markdownregistry.com/api/v1/blob/c5e4d4a088bf9c9ce7bd6cb723702b8bda45b7f5c9cbfd63ab3995d1866cc160
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 darknecrocities/skillbuilder
Every file in darknecrocities/skillbuilder