histogram-cleanup

histogram-cleanup is a Refactoring & code quality skill for AI agents, published by chromium in the chromium repository on GitHub. Skillspace rates histogram-cleanup C (74/100) and it passed the safety scan; a judge model has also reviewed it.

Identify and safely remove expired Chromium histograms (dead metrics/technical debt). Use this skill when a contributor asks to clean up metrics, fix code health issues related to histograms, remove obsolete code, or work on a histogram cleanup task.

Grade
C
Quality
74 / 100
Safety
Passed
GitHub stars
24,241

Placed #1 of 6 in the judged category final for Refactoring & code quality.

Not launch-quality. It is graded C with a clean safety verdict, but our quality filters exclude it: a model that read it found it written only for the repository it lives in. So it is not in our launch-quality set, the skills our MCP server searches and recommends. How launch-quality is decided

Our two independent classifiers differ on this skill's category, so treat the placement as provisional.

This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.

View source on GitHubchromium/chromium

Our review

Architecture
88 / 100
Maturity
Structured: ships references or scripts
Security scan
No issues found
License
BSD-3-Clause
Adoption
Adopted by 0 other repositories, in 0 collections
Scope
Repo-internal: written for the repository it lives in. Edits Chromium's own histograms.xml and C++/Java metrics code

Judge review

Placed #1 of 6 in the judged category final for Refactoring & code quality.

  • Trigger8585
  • Instructions9393
  • Specificity9292
  • Safety9292
  • Disclosure9393
  • Maintenance8585
Confidence-scored decision gate with exact ask-user thresholds and a full references/scripts split, a model for safe, bounded cleanup.

Not checked yet

  • No blind task eval yet
  • Sibling files (scripts, references) not fetched; security scan covers SKILL.md only

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