performance SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
performance from byerlikaya/claude-starter-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add byerlikaya/claude-starter-kit/performance@git:20260924.a457823Pins git:20260924.a457823 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- byerlikaya/claude-starter-kit
- Path
kit/skills/performance/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260924.a457823, committed Sep 24, 2026
- First version recorded
- Sep 24, 2026
- Size
- 2,165 bytes
- Repository stars
- 25
- License
- MIT
Stack-agnostic performance: measure first, find the bottleneck, then optimise. N+1, needless allocation, wrong async boundary, missing index/cache, heavy payload. No premature optimisation. Use when something is slow, before optimising anything, and when a change touches a hot path.
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 <!-- routing-eval reads the next line; why it sits in the body: AGENT_TEMPLATE.md --> Trigger phrases: "performance", "slow", "optimization", "profiling", "N+1", "latency", "memory leak", "leaked memory", "load test", "seconds to open", "seconds to respond", "anything slower", "make it slower" Core rule: **measure first, optimize later.** Optimization without measurement is a guess; it usually speeds up the wrong place and adds complexity. Stack-agnostic; do a web search when you need the profiling tool/library. ## Method (in order) 1. **Set a target** — what is "acceptable"? (p95 latency, throughput, memory ceiling). Numeric. 2. **Measure** — find the real bottleneck with a profiler/APM/benchmark; don't start from a guess. 3. **Fix the single most expensive thing** — Amdahl: speeding up a 5% path by 2x is wasted; target the hot path. 4. **Measure again** — did it actually improve, is there a regression. 5. **Stop** — once you hit the target, finish; no endless micro-optimization. ## Common bottlenecks Catalog of common bottlenecks + fixes to consult: **`references/bottlenecks.md`**. ## Measurement tips …
Read the whole file at its exact version.
How to install
mdr add byerlikaya/claude-starter-kit/performance@sha256:063b8ca0cf88d2e4The line at the top of this page pins the label git:20260924.a457823, 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_75yerdwa7qnlp5ak)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Sep 24, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260924.a457823 latest | 2026-09-24 | a457823 | 2,165 B | A | view · diff |
| git:20260924.ad81b1a | 2026-09-24 | ad81b1a | 2,359 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 (2165 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
byerlikaya/claude-starter-kit · 25 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_75yerdwa7qnlp5ak GET https://markdownregistry.com/api/v1/resolve?ref=byerlikaya/claude-starter-kit/performance GET https://markdownregistry.com/api/v1/blob/063b8ca0cf88d2e48e0f471601a08dfb344707818f46a421c16af700ac32adaa
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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