# agent-skills 0.6.8

- Product: agent-skills (https://whatsnew.fyi/product/agent-skills)
- Vendor: agent-skills
- Date: 2026-08-28
- Version: 0.6.8
- Original notes: https://github.com/addyosmani/agent-skills/releases/tag/0.6.8
- Permalink: https://whatsnew.fyi/product/agent-skills/releases/0.6.8

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — New skill constraint-driven-development establishes a project's quality bar as a written contract in CONSTRAINTS.md, interviews on relevant dimensions, supplies defaults, maps dimensions to tools with install and run commands, and watches diffs for weakened bars including new suppressions, skipped tests, stripped assertions, unimplemented stubs, and edited-down thresholds
- **changed** — performance-optimization skill deepened with real backend and database substance including query plan reading, index decisions, connection-pool exhaustion, and caching strategies with layer choice, key design, invalidation strategy, and stampede protection
- **added** — performance-optimization now documents its Guard step and a new validator rule enforces that any workflow advertising numbered steps documents each one
- **changed** — planning-and-task-breakdown no longer silently overwrites an incomplete plan and instead stops and asks if tasks/plan.md still has unchecked tasks for different work
- **changed** — code-reviewer persona now uses the same severity labels as the code-review skill (Critical / Required / Optional / Nit)
- **fixed** — Validator section-exemption lookup now uses Object.hasOwn so a skill directory named constructor can no longer slip past required-section checks via the prototype chain
- **fixed** — git-workflow-and-versioning picked up pull-request vocabulary so it routes for PR-phrased asks

Agent Skills 0.6.8 adds a new skill for setting and holding a project's quality bar, deepens the performance guidance with real backend and database substance, and clears a round of fixes.

First, a thank you. This repository just passed **90,000 stars**. That is entirely down to the people who use these skills, file sharp issues, send careful PRs, and field-test them on real projects. Thank you, genuinely. This release is a good snapshot of that: a new skill, a large contribution from a collaborator, and a handful of fixes that came straight from your reports.

##### Highlights

- **New skill: constraint-driven-development** (#472). Establishes a project's quality bar as a written contract (`CONSTRAINTS.md`), interviews you on which dimensions matter, supplies sane defaults when you have no number in mind, maps every dimension to a de facto tool with install and run commands, and watches the diff for a weakened bar: new suppressions, skipped tests, stripped assertions, unimplemented stubs, thresholds edited down. It ships a reference floor-guard so agents enforce the floor the same way across runs and stacks instead of reinventing one each time. Thanks to @federicobartoli for a field-test-driven review that shaped it.
- **performance-optimization, deepened** (#521, @nucliweb). Real backend and database depth: reading the query plan before reaching for an index, when an index will not help, connection-pool exhaustion, and caching strategies (layer choice, key design keyed on the viewer, one invalidation strategy, stampede protection). Decision material in the skill, patterns and checklist in `references/performance-checklist.md`.

##### Skills and content

- performance-optimization now documents its Guard step (it was declared in the workflow but never written up), and a new validator rule enforces that any workflow advertising numbered steps documents each one (#525, @CBOSSX).
- planning-and-task-breakdown no longer silently overwrites an incomplete plan: if `tasks/plan.md` still has unchecked tasks for different work, it stops and asks rather than destroying state that may be mid-build in another session (#526, @ayobamiseun, from #518).

##### Fixes and tooling

- The `code-reviewer` persona now uses the same severity labels as the code-review skill (Critical / Required / Optional / Nit), so a finding is labeled the same whichever entry point runs the review.
- Validator: the section-exemption lookup uses `Object.hasOwn`, so a skill directory named `constructor` can no longer slip past the required-section checks via the prototype chain (#505, @abhisheksharma2411).
- OpenCode setup docs corrected for repo-scoped skill installation (#516, @alexmarco, closes #515).
- git-workflow-and-versioning picked up pull-request vocabulary so it routes for PR-phrased asks (#508, @superandy8288).

##### Thanks

Thanks to everyone who contributed this release: @nucliweb, @ayobamiseun, @CBOSSX, @abhisheksharma2411, @alexmarco, @superandy8288, and @federicobartoli. And thank you to the wider community for getting us past 90,000 stars.

**Full Changelog**: https://github.com/addyosmani/agent-skills/compare/0.6.7...0.6.8