performance
Diagnose and improve application performance using measurement, profiling, query analysis, bundle/runtime inspection, and regression verification.
Skill by PHENOMVALENCE
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/phenomvalence-performance
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.
Get the weekly diff
The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.
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. 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
What's inside
- Skill name
performance- Description
- Diagnose and improve application performance using measurement, profiling, query analysis, bundle/runtime inspection, and regression verification.
- License
- MIT
- Instructions
- 24 lines in SKILL.md · view on GitHub
Files (1)
- SKILL.md
SKILL.md (first lines)
# Performance Optimization ## Workflow 1. Define the slow behavior and a measurable baseline. 2. Profile before optimizing: request timing, database queries, CPU/memory, client bundle/rendering, network waterfalls, cache behavior, or external-service latency. 3. Identify the dominant bottleneck rather than applying generic micro-optimizations. 4. Make the smallest high-impact change. 5. Re-measure under comparable conditions. 6. Check correctness, resource tradeoffs, cache invalidation, concurrency, and operational impact. 7. Add regression budgets/tests/monitoring where appropriate. ## Common areas - N+1 queries and missing indexes; - duplicated/serial network calls; - oversized client bundles/images; - unnecessary renders/hydration; - expensive loops/serialization; - missing pagination/batching; - unsafe/unbounded caching; - slow external calls without timeouts. Never trade away correctness, authorization, or data freshness without an explicit product decision.
From PHENOMVALENCE/engineering-agent-skills, MIT.
More from PHENOMVALENCE/engineering-agent-skills
- 0.524score
codebase-analysis
PHENOMVALENCE
Inspect and map an existing repository before making significant changes.
SkillBFreshness: BClaude Code +9 - 0.521score
nextjs
PHENOMVALENCE
Build and maintain modern Next.js applications with TypeScript, App Router conventions, clear server/client boundaries, accessible UI, and production…
SkillBFreshness: BClaude Code +9 - 0.521score
ci-cd
PHENOMVALENCE
Design or maintain CI/CD pipelines that provide reliable quality gates, reproducible builds, secure secret handling, and controlled deployments.
SkillBFreshness: BClaude Code +9 - 0.521score
specification
PHENOMVALENCE
Turn a feature, bug, integration, or refactor request into explicit requirements and acceptance criteria before implementation.
SkillBFreshness: BClaude Code +9 - 0.521score
security-review
PHENOMVALENCE
Review changed or existing code for authentication, authorization, input handling, injection, XSS, CSRF, SSRF, secret exposure, file upload, dependency, and…
SkillBFreshness: BClaude Code +9 - 0.521score
debugging
PHENOMVALENCE
Diagnose defects systematically by reproducing the issue, isolating the failing layer, testing hypotheses, fixing root cause, and adding regression protection.
SkillBFreshness: BClaude Code +9 - 0.521score
deployment
PHENOMVALENCE
Prepare, execute, and verify safe deployments with preflight checks, migrations, configuration validation, rollback awareness, and production smoke tests.
SkillBFreshness: BClaude Code +9 - 0.521score
documentation
PHENOMVALENCE
Create and maintain concise project, architecture, API, setup, operational, and decision documentation alongside code changes.
SkillBFreshness: BClaude Code +9 - 0.521score
laravel
PHENOMVALENCE
Build and maintain Laravel applications using framework conventions, explicit validation/authorization, service boundaries, migrations, tests, queues, and API…
SkillBFreshness: BClaude Code +9 - 0.521score
frontend-design
PHENOMVALENCE
Design or improve production frontend interfaces with clear hierarchy, responsive behavior, accessibility, and consistency while preserving functionality.
SkillBFreshness: BClaude Code +9 - 0.518score
incremental-implementation
PHENOMVALENCE
Implement planned work in small, coherent, reversible steps with frequent verification and meaningful commits.
SkillBFreshness: BClaude Code +9 - 0.518score
git-workflow
PHENOMVALENCE
Manage branches, commits, pull requests, and release-safe Git history for agent-assisted engineering work.
SkillBFreshness: BClaude Code +9
Signals
- Stars
- 0
- Forks
- 0
- Open issues
- 0
- Last commit (this folder)
- Sep 16, 2026 (1 month ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
More from PHENOMVALENCE
- 0.524score
codebase-analysis
PHENOMVALENCE
Inspect and map an existing repository before making significant changes.
SkillBFreshness: BClaude Code +9 - 0.521score
documentation
PHENOMVALENCE
Create and maintain concise project, architecture, API, setup, operational, and decision documentation alongside code changes.
SkillBFreshness: BClaude Code +9 - 0.521score
debugging
PHENOMVALENCE
Diagnose defects systematically by reproducing the issue, isolating the failing layer, testing hypotheses, fixing root cause, and adding regression protection.
SkillBFreshness: BClaude Code +9 - 0.521score
deployment
PHENOMVALENCE
Prepare, execute, and verify safe deployments with preflight checks, migrations, configuration validation, rollback awareness, and production smoke tests.
SkillBFreshness: BClaude Code +9 - 0.521score
ci-cd
PHENOMVALENCE
Design or maintain CI/CD pipelines that provide reliable quality gates, reproducible builds, secure secret handling, and controlled deployments.
SkillBFreshness: BClaude Code +9 - 0.521score
laravel
PHENOMVALENCE
Build and maintain Laravel applications using framework conventions, explicit validation/authorization, service boundaries, migrations, tests, queues, and API…
SkillBFreshness: BClaude Code +9
Cite this page
performance skill. Agent Mart. https://agentmart.dev/skills/phenomvalence-performance (last updated 2026-10-24)