Install
$ agentstack add skill-callstackincubator-agent-skills-validate-skills ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
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:
``bash fd -t d -d 1 . skills/ ``
- For each skill, read
SKILL.mdand 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
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: callstackincubator
- Source: callstackincubator/agent-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.