A community suite is a maintained agent setup (skills, hooks, CLAUDE.md rules) that ships with its own eval suite and a published, reproducible measurement of what it is worth: the same cases run with and without the setup, and the score delta is the value. No testimonials, a number.
komo-stack is a Spring Boot house-conventions setup: one skill (controllers, services, DTOs,
pagination, error envelopes), one guard hook against destructive git commands, and a six-case eval
suite with 100% rule coverage, including a trigger tripwire and a negative-trigger case.
What it measured on Claude Code 2.1.269, claude-sonnet-5 (with the setup vs without it, same prompts, same graders; the full run, unedited):
| case | with | without | the setup is worth |
|---|---|---|---|
| guard-blocks-destructive-git | 1.00 | 0.25 | +0.75 |
| spring-controller-follows-conventions | 1.00 | 0.40 | +0.60 |
| spring-request-dtos-are-validated-records | 1.00 | 0.60 | +0.40 |
| spring-service-owns-rules-and-errors | 1.00 | 0.75 | +0.25 |
Read the table plainly: the guard hook is the difference between a blocked destructive command and a 0.25; the conventions skill adds 0.25 to 0.60 depending on how far the model’s defaults already match the house style. The two trigger cases carry no delta by design (the tripwire was not measured in this run’s budget; the negative-trigger case proves the skill stays quiet off-topic).
Adopt it:
claude plugin marketplace add jameskomo/config-drift-checker
claude plugin install komo-stack@jameskomo
or copy examples/komo-stack/ into your repo and adapt the rules; the eval suite comes along and
keeps measuring your adaptation.
A suite qualifies as a community suite when it has: (1) the setup itself (skills/hooks/CLAUDE.md),
(2) an eval suite in the official claude plugin eval format with a trigger tripwire and at least
80% rule coverage (config-coverage.mjs), and (3) one published with/without run as the worth
measurement. Open an issue on
jameskomo/config-drift-checker with a
link; stacks we would love to see: Next.js/React conventions, Django, Go services, Terraform
review, data engineering (dbt).