benchmark
garrytan/gstack / benchmark
detects web speed regressions , which improves: avoids shipping slower pages
score 6/10high risk137K repo stars
Details
- judge’s score
- 6/10
- place
- outside the packs
- publisher
- garrytan
- status
- new
- pinned commit
- c580561 on GitHub (new tab)
- skill’s last commit
- Oct 19, 2026
- repo stars
- 137,030
- main type
- Other
Judgement
Clear topic and concrete Aside scripts, but generic description, standard metrics, heavy off-topic gstack preamble, and SKILL.md truncated (24000/29331 chars). Provisional note, unreliable judgment.
reservations
- SKILL.md truncated at 24000 characters out of 29331: the end (comparison, report, trends) was not assessed.
- Very long gstack preamble (plan mode, onboarding, telemetry, artifact sync) unrelated to performance measurement.
- Dependency on the external Aside tool and on ~/.claude/skills/gstack/bin scripts absent from the provided content; SKILL.md.tmpl appendix not provided.
- Metrics (TTFB, FCP, LCP, median over 3 runs) are general knowledge; few project-specific pitfalls or thresholds.
sub-scores
- Triggering
- 1/2
- Added value
- 1/2
- Precision
- 1/2
- Scope
- 2/2
- Quality
- 1/2
Alerts
3 alerts, by category
Execution
- high risk
The preamble runs local scripts and a ./setup step that installs bun, without integrity checks.
Network
- high risk
Telemetry (gstack-skill-end) and artifact sync may send usage data or reports to a third party; the skill does not specify what.
Static scan
- info risk
allowed-tools frontmatter
Bash - Read - Write - Glob - AskUserQuestion
Original description
Web performance regression detection. (gstack)
added on Oct 19, 2026 · license MIT