How do I install validate-skills?

Run `npx skills add https://github.com/callstackincubator/agent-skills --skill validate-skills` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does validate-skills support?

validate-skills works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is validate-skills free to use?

Yes. validate-skills is free to install and use. It is available from the open explainx.ai skill registry published by callstackincubator.

Where can I read ratings and reviews for validate-skills?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

Productivity

validate-skills▌

callstackincubator/agent-skills · updated Apr 8, 2026

$npx skills add https://github.com/callstackincubator/agent-skills --skill validate-skills

0 commentsdiscussion

summary

Validates skills against agentskills.io spec and Claude Code best practices.

›Checks skill metadata compliance including name format, description length, and optional fields like license and compatibility
›Enforces Claude Code best practices: third-person descriptions, body length limits, single-level references, and markdown link formatting
›Provides structured validation reports flagging spec violations and authoring guideline deviations
›Designed for use via /validate-skills comman

skill.md

Validate Skills

Validate all skills in skills/ against the agentskills.io spec and Claude Code best practices.

Validation Checklist

For each skill directory, verify:

Spec Compliance (agentskills.io)

Check	Rule
`name` format	1-64 chars, lowercase alphanumeric + hyphens, no leading/trailing/consecutive hyphens
`name` matches directory	Directory name must equal `name` field
`description` length	1-1024 characters, non-empty
Optional fields valid	`license`, `metadata`, `compatibility` if present

Best Practices (Claude Code)

Check	Rule
Description format	Third person, describes what + when to use
Body length	Under 500 lines
References one-level deep	No nested reference chains
Links are markdown	Use `[text](path)` not bare filenames
No redundancy	Don't repeat description in body
Concise	Only add context Claude doesn't already have

How to Run

Find all skill directories:
```
fd -t d -d 1 . skills/
```
For each skill, read SKILL.md and check against the rules above

Report issues in this format:

## Validation Results

### skills/example-skill
- [PASS] name format valid
- [FAIL] name "example" doesn't match directory "example-skill"
- [PASS] description length OK (156 chars)

References

Discussion

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general reviews

Ratings

4.7★★★★★40 reviews

★★★★★Ishan Desai· Dec 28, 2024
validate-skills has been reliable in day-to-day use. Documentation quality is above average for community skills.
★★★★★Li Li· Dec 4, 2024
Useful defaults in validate-skills — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
★★★★★Benjamin Rao· Nov 23, 2024
validate-skills has been reliable in day-to-day use. Documentation quality is above average for community skills.
★★★★★Daniel Singh· Nov 19, 2024
Useful defaults in validate-skills — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
★★★★★Amina Liu· Oct 14, 2024
Keeps context tight: validate-skills is the kind of skill you can hand to a new teammate without a long onboarding doc.
★★★★★Amelia Diallo· Oct 10, 2024
validate-skills is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
★★★★★Isabella Agarwal· Sep 25, 2024
validate-skills has been reliable in day-to-day use. Documentation quality is above average for community skills.
★★★★★Chinedu Iyer· Sep 21, 2024
We added validate-skills from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
★★★★★Yash Thakker· Sep 5, 2024
Useful defaults in validate-skills — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
★★★★★Dhruvi Jain· Aug 24, 2024
validate-skills is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

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