Individual skill
hotpath
Improves performance by defining a metric and workload, profiling first, controlling noise, changing one major variable, and comparing equivalent conditions. Use for latency, throughput, memory, CPU, rendering, query, bundle, or startup problems.
skills/hotpath/SKILL.md
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- Nov 2, 2026
- License
- MIT
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- agent-skills Repository topic
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SKILL.mdcore · 12,482 bytesSKILL.mdcore · 12,482 bytesreferences/experiment-hazards.mddoc · 1,760 bytesreferences/measurement.mddoc · 3,201 bytesreferences/research.mddoc · 2,704 bytesscripts/measure-reportruns · 3,217 bytes
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# hotpath: never optimize on vibes
The skill is the discipline: **measure → change one thing → measure the
same way → report the delta or revert.** An optimization without a
before/after number is a rumor. Most "obvious" performance work fixes
code that wasn't hot and misses the query that was.
## Prerequisites
A runnable system plus one measurement path to the complaint (profiler,
APM, query log, bundle analyzer, or even `time` + counters). No
measurement path at all → the first deliverable is instrumentation, not
optimization (see stop conditions).
