performance-check
Use for slow code, slow queries, bundle size, caching, N+1, render loops, memory, and latency issues.
Skill by mtvrkan
Chalk Labs
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Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/mtvrkan-performance-check
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
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About
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Permissions
What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.
- Tools
- No tools found
- Secrets
- None asked for
- Install scripts
- None found
Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/performance-check
Tools it pre-approves 4
From allowed-tools in SKILL.md: the agent may use these without asking you each time.
Read,Grep,Glob,Bash
What's inside
- Skill name
performance-check- Description
- Use for slow code, slow queries, bundle size, caching, N+1, render loops, memory, and latency issues.
- License
- MIT
- Allowed tools
- Read,, Grep,, Glob,, Bash
- Instructions
- 12 lines in SKILL.md · view on GitHub
Before installing
- Pre-approves any shell command
Files (1)
- SKILL.md
SKILL.md (first lines)
# performance-check `code-review` flags obvious N+1/perf smells inline as one of ten checks on a diff; this skill is the deep-dive when that flag needs an actual investigation, or when the user names a slow endpoint/query directly. This skill forks into `performance-guard` (frontmatter), so the guard's body is co-loaded — its per-layer checklists (DB → render → bundle → navigation → cache → memory → I/O), impact-order triage for unscoped reports, PERFORMANCE ANALYSIS output format, and GUARD ESCALATIONS block (db-guard for schema/index fixes) are the procedure; none of it is restated here. Do not edit files — produce a prioritized fix list.
From mtvrkan/senior-dev-kit, MIT.
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- 0.630score
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db-change
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Use for database schema/model/query changes AND new entity/relation/document modeling — SQL, NoSQL, ORM, indexes, constraints, data safety.
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Use before implementing large, multi-file, architecture or system-design, or unclear features.
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Use for dependency audits (CVEs, outdated majors, paid licenses, bloat), secret scans, SAST, and container/filesystem scans.
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Signals
- Stars
- 10
- Forks
- 0
- Open issues
- 0
- Last commit (this folder)
- Sep 28, 2026 (1 month ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- Repository
- github.com/mtvrkan/senior-dev-kit
- Website
- senior.mtvrkan.com/
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
More from mtvrkan
- 0.630score
new-screen
mtvrkan
Use when building a brand-new mobile screen, bottom sheet, or major UI section from scratch in Kotlin/Compose, Flutter, or Swift/SwiftUI.
SkillAFreshness: A★ 10Claude Code +9 - 0.630score
new-page
mtvrkan
Use when building a brand-new admin panel page or screen from scratch in ANY web framework.
SkillAFreshness: A★ 10Claude Code +9 - 0.630score
from-scratch
mtvrkan
Use when starting a new project from scratch.
SkillAFreshness: A★ 10Claude Code +9 - 0.627score
bug-fix
mtvrkan
Use for localized bugs, runtime errors, white screens, failing tests, console errors, and regressions.
SkillAFreshness: A★ 10Claude Code +9 - 0.627score
codebase-overview
mtvrkan
Use to generate or refresh a codebase architecture overview — directory map, data flow, key component responsibilities — so future research reuses it instead…
SkillAFreshness: A★ 10Claude Code +9 - 0.627score
dep-upgrade
mtvrkan
Use to upgrade a dependency across a major version or migrate between libraries — framework majors, ORM or test-runner majors, deprecated packages — with the…
SkillAFreshness: A★ 10Claude Code +9
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Cite this page
performance-check skill. Agent Mart. https://agentmart.dev/skills/mtvrkan-performance-check (last updated 2026-10-24)