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Hullo @LeoVS09 👋 I ran your skills through `tessl skill review` at work and found some targeted improvements. All 68 skills were scoring **0%** due to frontmatter validation issues that prevented the LLM judge from even running. Here's the full before/after for the top 10 (by improvement):  | Skill | Before | After | Change | |-------|--------|-------|--------| | notes | 0% | 90% | +90% | | worktrees | 0% | 89% | +89% | | thought-based-reasoning | 0% | 81% | +81% | | test-skill | 0% | 80% | +80% | | build-mcp | 0% | 80% | +80% | | create-skill | 0% | 76% | +76% | | test-prompt | 0% | 76% | +76% | | subagent-driven-development | 0% | 76% | +76% | | root-cause-tracing | 0% | 72% | +72% | | brainstorm | 0% | 72% | +72% | | test-driven-development | 0% | 72% | +72% | | write-tests | 0% | 68% | +68% | | prompt-engineering | 0% | 65% | +65% | | multi-agent-patterns | 0% | 63% | +63% | | apply-skill-best-practices | 0% | 63% | +63% | | setup-code-formating | 0% | 60% | +60% | | merge-worktree | 0% | 60% | +60% | | add-typescript-best-practices | 0% | 60% | +60% | | create-worktree | 0% | 59% | +59% | | why | 0% | 59% | +59% | | load-issues | 0% | 58% | +58% | | review-local-changes | 0% | 55% | +55% | | create-command | 0% | 55% | +55% | | query | 0% | 55% | +55% | | compare-worktrees | 0% | 55% | +55% | | create-pr | 0% | 55% | +55% | | analyse-problem | 0% | 55% | +55% | | cause-and-effect | 0% | 55% | +55% | | setup-arxiv-mcp | 0% | 55% | +55% | | setup-codemap-cli | 0% | 55% | +55% | | kaizen | 0% | 54% | +54% | | create-hook | 0% | 51% | +51% | | plan-do-check-act | 0% | 50% | +50% | | fix-tests | 0% | 48% | +48% | | update-docs | 0% | 48% | +48% | | create-agent | 0% | 48% | +48% | | setup-serena-mcp | 0% | 48% | +48% | | agent-evaluation | 0% | 47% | +47% | | context-engineering | 0% | 47% | +47% | | create-workflow-command | 0% | 47% | +47% | | decay | 0% | 47% | +47% | | do-and-judge | 0% | 47% | +47% | | do-in-parallel | 0% | 47% | +47% | | judge-with-debate | 0% | 47% | +47% | | judge | 0% | 47% | +47% | | launch-sub-agent | 0% | 47% | +47% | | add-task | 0% | 47% | +47% | | software-architecture | 0% | 45% | +45% | | analyse | 0% | 44% | +44% | | attach-review-to-pr | 0% | 44% | +44% | | actualize | 0% | 42% | +42% | | propose-hypotheses | 0% | 42% | +42% | | reset | 0% | 42% | +42% | | analyze-issue | 0% | 41% | +41% | | do-competitively | 0% | 40% | +40% | | do-in-steps | 0% | 40% | +40% | | status | 0% | 40% | +40% | | setup-context7-mcp | 0% | 40% | +40% | | plan | 0% | 40% | +40% | | review-pr | 0% | 39% | +39% | | critique | 0% | 36% | +36% | | tree-of-thoughts | 0% | 36% | +36% | | create-ideas | 0% | 36% | +36% | | implement | 0% | 36% | +36% | | commit | 0% | 30% | +30% | | memorize | 0% | 22% | +22% | | write-concisely | 0% | 15% | +15% | | reflect | 0% | 14% | +14% | <details> <summary>Changes made</summary> ### Frontmatter `name` field fixes (all 68 skills) All skills used a `plugin:skill-name` format (e.g., `code-review:review-local-changes`) in the `name` field. The tessl validator requires names to contain only lowercase letters, numbers, and hyphens — no colons. This caused every skill to fail deterministic validation, blocking the LLM judge entirely. **Fix**: Removed the plugin namespace prefix, keeping just the skill name (e.g., `review-local-changes`). This also aligns with the project's own convention documented in CLAUDE.md: "Keep YAML `name:` field matching folder name for consistency." ### Reserved word fix (1 skill) `apply-anthropic-skill-best-practices` contained the reserved word "anthropic" in the name field. Renamed to `apply-skill-best-practices`. ### YAML parsing fixes (2 skills) `create-agent` and `create-workflow-command` had unquoted `argument-hint` values containing square brackets and colons, which broke YAML parsing. Wrapped these values in quotes. ### `allowed-tools` format fix (1 skill) `review-local-changes` used a JSON array `["Bash", "Glob", ...]` for `allowed-tools` instead of the expected comma-separated string format. Converted to `Bash, Glob, Grep, Read, Task`. </details> Honest disclosure — I work at @tesslio where we build tooling around skills like these. Not a pitch - just saw room for improvement and wanted to contribute. Want to self-improve your skills? Just point your agent (Claude Code, Codex, etc.) at [this Tessl guide](https://docs.tessl.io/evaluate/optimize-a-skill-using-best-practices) and ask it to optimize your skill. Ping me - [@popey](https://github.com/popey) - if you hit any snags. Thanks in advance 🙏
Co-authored-by: Vladislav Goncharov <LeoVS010@gmail.com>
Co-authored-by: Vladislav Goncharov <LeoVS010@gmail.com>
feat: fix skill frontmatter validation across all 68 skills
LeoVS09
commented
Apr 21, 2026
Co-authored-by: Vladislav Goncharov <LeoVS010@gmail.com>
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.tsfilesCloses: #68
Closes: #76