Agent skill

Performance Gate

by DanielPodolsky in DanielPodolsky/ownyourcode

Verifies performance including N+1 query detection, scalability assessment, and complexity analysis.

MITAuto-check passed

Install Performance Gate

skills CLI

$ npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install DanielPodolsky/ownyourcode performance-gate --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/DanielPodolsky/ownyourcode.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/gates/performance .claude/skills/performance-gate && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "performance-gate" agent skill from https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance into .claude/skills/performance-gate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-gate", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install DanielPodolsky/ownyourcode performance-gate --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DanielPodolsky/ownyourcode.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/gates/performance .agents/skills/performance-gate && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "performance-gate" agent skill from https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance into .agents/skills/performance-gate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-gate", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install DanielPodolsky/ownyourcode performance-gate --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DanielPodolsky/ownyourcode.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/gates/performance .cursor/skills/performance-gate && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "performance-gate" agent skill from https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance into .cursor/skills/performance-gate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-gate", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/DanielPodolsky/ownyourcode.git --path .claude/skills/gates/performance

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install DanielPodolsky/ownyourcode performance-gate --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DanielPodolsky/ownyourcode.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/gates/performance .gemini/skills/performance-gate && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "performance-gate" agent skill from https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance into .gemini/skills/performance-gate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-gate", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install DanielPodolsky/ownyourcode performance-gate

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/DanielPodolsky/ownyourcode.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/gates/performance .github/skills/performance-gate && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "performance-gate" agent skill from https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance into .github/skills/performance-gate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-gate", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install DanielPodolsky/ownyourcode performance-gate --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/DanielPodolsky/ownyourcode.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/gates/performance .opencode/skills/performance-gate && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "performance-gate" agent skill from https://github.com/DanielPodolsky/ownyourcode/tree/main/.claude/skills/gates/performance into .opencode/skills/performance-gate/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance-gate", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: performance-gate
GitHub stars: 290
Used in: 1 other repo
Token cost: ~1.4k tokens
SKILL.md length: 435 words
Files: 1
Skills in repo: 19
Repo updated: Jun 27, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Verifies performance including N+1 query detection, scalability assessment, and complexity analysis.

Works in 5 steps: The N+1 Query Problem → Fetching Everything → Expensive Render Calculations → …
SKILL.md covers Purpose, Gate Status, Gate Questions and Performance Checklist, plus 6 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Performance Gate is an agent skill from DanielPodolsky/ownyourcode. Verifies performance including N+1 query detection, scalability assessment, and complexity analysis. WARNING gate triggered during /own:done flow.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Claude Code workflow for AI-mentored development. Work efficiently with Spec-Driven Development and the 6 Gates. Built to fight cognitive offloading — for developers using AI to… The licence is MIT.

Example prompts

“Use the performance-gate skill to verify performance including N+1 query detection, scalability assessment, and complexity analysis”
“/performance-gate”

Workflow steps

5 steps, taken from the step headings in SKILL.md.

The N+1 Query Problem
Fetching Everything
Expensive Render Calculations
Inline Functions Causing Re-renders
Missing Cleanup

What it can do on your machine

Read from SKILL.md and the folder at commit bd1f17c. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Performance Gate loads about 1.4k tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 435 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~41
When it runs · the whole SKILL.md, loaded when a task matches: ~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from DanielPodolsky/ownyourcode at commit bd1f17c, republished under its MIT licence (© DanielPodolsky). 435 words, ~1,435 tokens.

Download SKILL.mdSave it as .claude/skills/performance-gate/SKILL.md (or your agent's skills folder).

name: performance-gate
description: Verifies performance including N+1 query detection, scalability assessment, and complexity analysis. WARNING gate triggered during /own:done flow.

Gate 4: Performance Review

"Code that works is step one. Code that scales is step two."

Purpose

This gate catches performance anti-patterns before they cause problems. The focus is on obvious issues, not micro-optimizations.

Gate Status

PASS — No obvious performance issues
WARNING — Issues found that could cause problems at scale

Gate Questions

Question 1: Scalability

"What happens when there are 10,000 items? 1,000,000?"

Looking for:

Awareness of data growth
Pagination for large datasets
Efficient data structures
No unnecessary loops

Question 2: Query Efficiency

"How many database queries does this operation make?"

Looking for:

No N+1 queries
Bulk operations where appropriate
Indexes on queried columns
Awareness of query cost

Question 3: Re-render Awareness (Frontend)

"When this state changes, what components re-render?"

Looking for:

Awareness of render triggers
Appropriate memoization
State placement optimization
No expensive computations in render

Performance Checklist

Database Operations

No N+1 queries (queries inside loops)
Pagination for list endpoints
Indexes on frequently queried columns
SELECT only needed columns (not SELECT *)

Frontend Rendering

Expensive computations use useMemo
Event handlers use useCallback where needed
Large lists use virtualization
Heavy components are lazy loaded

API & Network

Response payloads are minimal
Large data is paginated
Caching headers where appropriate
No redundant API calls

General

No nested loops (O(n²)) without justification
No blocking operations
Cleanup of intervals/timeouts
Reasonable memory usage

Response Templates

If PASS

✅ PERFORMANCE GATE: PASSED

Performance considerations look good:
- Data fetching is efficient
- No obvious N+1 patterns
- Appropriate pagination in place

Moving to the next gate...

If WARNING

⚠️ PERFORMANCE GATE: WARNING

Found [X] performance concerns:

**Issue 1: [N+1 Query / Inefficient Loop]**
Location: `file.ts:42`
Question: "This makes [N] queries. Can we batch into 1?"

**Issue 2: [Missing Pagination]**
Location: `file.ts:88`
Question: "What happens with 100,000 records?"

**Issue 3: [Expensive Render]**
Location: `Component.tsx:15`
Question: "Does this need to recalculate on every render?"

These may not matter now, but will become problems as the app grows.

Common Issues to Check

1. The N+1 Query Problem

❌ const users = await User.findAll();
   for (const user of users) {
     user.posts = await Post.findByUserId(user.id);
   }
   // 1 + N queries!

✅ const users = await User.findAll({
     include: [{ model: Post }]
   });
   // 1 query with JOIN

2. Fetching Everything

❌ // Returns 10,000 users with 50 fields each
   GET /api/users

✅ // Paginated with only needed fields
   GET /api/users?page=1&limit=20&fields=id,name,email

3. Expensive Render Calculations

❌ function UserList({ users }) {
     // Runs on every render
     const sorted = users.sort((a, b) => a.name.localeCompare(b.name));
     return <ul>{sorted.map(...)}</ul>;
   }

✅ function UserList({ users }) {
     const sorted = useMemo(
       () => [...users].sort((a, b) => a.name.localeCompare(b.name)),
       [users]
     );
     return <ul>{sorted.map(...)}</ul>;
   }

4. Inline Functions Causing Re-renders

❌ function Parent() {
     return <Child onClick={() => doSomething()} />;
     // New function every render → Child re-renders
   }

✅ function Parent() {
     const handleClick = useCallback(() => doSomething(), []);
     return <Child onClick={handleClick} />;
   }

5. Missing Cleanup

❌ useEffect(() => {
     const interval = setInterval(fetchData, 5000);
     // Memory leak! Runs forever
   }, []);

✅ useEffect(() => {
     const interval = setInterval(fetchData, 5000);
     return () => clearInterval(interval);
   }, []);

Show full SKILL.md (189 more words)Show less

Socratic Performance Questions

Instead of pointing out the fix, ask:

"How many queries does this endpoint execute for 100 users?"
"If I add 10,000 more items, what breaks?"
"Does this array get re-sorted on every render?"
"What clears this interval when the component unmounts?"
"Do we need all 50 columns from this table?"

Big O Quick Reference

Pattern	Complexity	10,000 items	Concern Level
Map lookup	O(1)	1 op	Fine
Single loop	O(n)	10,000 ops	Usually fine
Nested loop	O(n²)	100M ops	Warning
Triple loop	O(n³)	1T ops	Critical

Performance Red Flags

Flag	Question	Why
Query in a loop	"Can we batch?"	N+1 problem
No pagination	"What at scale?"	Memory/time explosion
SELECT *	"Need all fields?"	Wasted bandwidth
setInterval no cleanup	"What clears this?"	Memory leak
Inline object/function in JSX	"New reference?"	Unnecessary re-renders
Array.sort() in render	"Cached?"	Runs every render

When to NOT Worry

Not everything needs optimization:

Small datasets: Don't paginate 20 items
Rare operations: One-time admin scripts can be slow
Prototype phase: Get it working first
Micro-optimizations: Focus on algorithms, not for vs forEach

The gate is about catching obvious issues, not micro-optimization.

Files

Just SKILL.md in .claude/skills/gates/performance of DanielPodolsky/ownyourcode.

Open the folder on GitHubat commit bd1f17c

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in DanielPodolsky/ownyourcode, which our catalogue first saw on October 7, 2026.

aiskillstore/marketplaceskills/danielpodolsky/performance-gate

Compare with similar skills

Performance Gate next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Performance Gate compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Performance Gate this skillDanielPodolsky/ownyourcode	290	1 repos	~1.4k	Automated safety check: Pass	MIT	3 mo ago
Verifyasgeirtj/system_prompts_leaks	69k	—	~3k	Automated safety check: Pass	CC0-1.0	yesterday
Verify Before CompletionYeachan-Heo/oh-my-claudecode	40k	—	~277	Automated safety check: Pass	MIT	today
Verify Thiscursor/plugins	10k	2 repos	~693	Automated safety check: Pass	None	yesterday
Spreadsheet Create Verify GateHKUDS/OpenSpace	7.7k	—	~4.3k	Automated safety check: Pass	MIT	1 mo ago
Verify and StopJuliusBrussee/caveman	110k	1 repos	~176	Automated safety check: Pass	Apache-2.0	today

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Questions about Performance Gate

What does Performance Gate do?

Verifies performance including N+1 query detection, scalability assessment, and complexity analysis. Performance Gate is an agent skill from DanielPodolsky/ownyourcode. Verifies performance including N+1 query detection, scalability assessment, and complexity analysis.

How do I install Performance Gate in Claude Code?

Run `npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a claude-code`. Or copy the skill folder (.claude/skills/gates/performance in DanielPodolsky/ownyourcode) into .claude/skills/performance-gate in your project. Claude Code loads it when a task matches its description.

How do I install Performance Gate in Codex?

Run `npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a codex`. Or copy the skill folder (.claude/skills/gates/performance in DanielPodolsky/ownyourcode) into .agents/skills/performance-gate in your project. Codex loads it when a task matches its description.

Can I use Performance Gate in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add DanielPodolsky/ownyourcode --skill performance-gate -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/performance-gate, .gemini/skills/performance-gate, .github/skills/performance-gate and .opencode/skills/performance-gate in your project.

What does Performance Gate need to run?

SKILL.md names no scripts, command-line tools or credentials: Performance Gate is instructions for the agent only.

Does Performance Gate access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Performance Gate safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Performance Gate use?

Performance Gate is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Performance Gate use?

About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Performance Gate?

Skills that share tags, products or a category with Performance Gate: Verify (asgeirtj/system_prompts_leaks, 69k stars), Verify Before Completion (Yeachan-Heo/oh-my-claudecode, 40k stars), Verify This (cursor/plugins, 10k stars) and Spreadsheet Create Verify Gate (HKUDS/OpenSpace, 7.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Performance Gate?

DanielPodolsky (a GitHub user) maintains it in DanielPodolsky/ownyourcode, which has 290 GitHub stars. The repository holds 19 skills in this directory. The repository was last updated on June 27, 2026.

Source: DanielPodolsky/ownyourcode on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Performance Gate

Facts

At a glance

What it does

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Gate 4: Performance Review

Purpose

Gate Status

Gate Questions

Question 1: Scalability

Question 2: Query Efficiency

Question 3: Re-render Awareness (Frontend)

Performance Checklist

Database Operations

Frontend Rendering

API & Network

General

Response Templates

If PASS

If WARNING

Common Issues to Check

1. The N+1 Query Problem

2. Fetching Everything

3. Expensive Render Calculations

4. Inline Functions Causing Re-renders

5. Missing Cleanup

Socratic Performance Questions

Big O Quick Reference

Performance Red Flags

When to NOT Worry

Files

Used in 1 other repository

Compare with similar skills

Similar skills

More from DanielPodolsky/ownyourcode

Questions about Performance Gate