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Use when testing a bundle-plugin locally before release — generating dev-marketplace environments, verifying component discovery, running hook smoke tests, and validating cross-platform readiness
Passed 16 of 23 test cases with the skill, and 7 of 23 without it.
and 9 more in the full report
11 fixed6 passed either way6 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
During component discovery testing for SKILL.md files under `skills/`, what opening phrase rule must the frontmatter `description` field satisfy?
| Checked | Without skill | With skill |
|---|---|---|
| Requires the skill frontmatter description to start with "Use when...". | Missed | Passed |
The instructions your model reads when the skill loads.
Dynamic verification of a bundle-plugin project: install it locally, confirm components are discoverable, validate hooks fire correctly, and run cross-platform smoke tests. Complements bundles-forge:auditing (static analysis) with runtime validation.
Core principle: Audit tells you if the structure is correct; testing tells you if it actually works.
Skill type: Flexible — adapt the test scope based on target platforms and project maturity.
Announce at start: "I'm using the testing skill to verify this plugin works correctly."
The target must be a local bundle-plugin project (has package.json + skills/). Remote URLs and archives are not supported — testing requires a local working directory.
| Target | Mode |
|---|---|
| Project root with multiple platforms | Full testing — all 5 test phases |
| Project root with single platform | Platform testing — phases 1-4 for the target platform |
| Single skill directory | Skill-only testing — phase 3 (component discovery) only |
Generate a temporary dev-marketplace for local installation testing.
../dev-marketplace/ adjacent to the project directory.claude-plugin/marketplace.json pointing to the project:{
"name": "<project-name>-dev",
test cases passed, vs 7 / 23 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.