Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.
SkillScore91Maintained
Automatic
◆Coding pack
Last verified 8/15/2026
What it changes
Passed 21 of 23 test cases with the skill, and 17 of 23 without it.
Without skill74%
With skill91%
Checks it passed that the model alone missed
The numerical constants are assigned to named UPPERCASE variables.
The error response envelope uses a single string for the error property.
The test code is partitioned into explicit Arrange, Act, and Assert phases.
and 1 more in the full report
4 fixed17 passed either way2 still failing0 broke
Pass-rate lift
+17 pp
Tokens
+150%
Agent turns
0%
Response time
-21%
Model gemini-3.6-flashMeasured 8/15/2026v121 of 23 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 4
Prompt
I'm building a Next.js backend endpoint for submitting new market entries. Please write the TypeScript route handler for this POST request, making sure it includes request payload validation and standard API response formatting. Output the complete code file.
What was checked, without and with the skill
Checked
Without skill
With skill
The response payload uses a top-level success boolean field.
Passed
Passed
The error response envelope uses a single string for the error property.
Missed
Passed
case-01 · gemini-3.6-flash · 8/15/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md524 linessingle file
Coding Standards & Best Practices
Universal coding standards applicable across all projects.
When to Activate
Starting a new project or module
Reviewing code for quality and maintainability
Refactoring existing code to follow conventions
Enforcing naming, formatting, or structural consistency
Setting up linting, formatting, or type-checking rules
Use when designing or auditing onboarding, activation flows, habit loops, pledges, public commitments, progressive profiling, retention programs, behavior-change plans, pricing flows, or lowball-risk funnels where consistency pressure may shape user decisions.