Javascript Core
JavaScript skill for runtime correctness, async behavior, module compatibility, and maintainable patterns. Trigger phrases: JavaScript, Node, ESM, CommonJS, promises, async await, event loop, runtime bug.
Install
$ agentstack add skill-caraya-agent-skills-javascript-core ✓ 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.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-caraya-agent-skills-javascript-core) 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
JavaScript Core Skill
Use When
- Reviewing or writing JavaScript code.
- Validating async flow, module format, and runtime behavior.
- Checking for common production reliability issues.
Checklist
- Runtime correctness
- Validate coercion, equality usage, and nullish handling.
- Confirm error paths and fallback behavior.
- Async control flow
- Catch missing await and unhandled promises.
- Validate concurrency limits for batch operations.
- Confirm cleanup for timers, streams, and listeners.
- Module and platform fit
- Check ESM and CommonJS interop assumptions.
- Ensure imports are compatible with runtime target.
- Code quality
- Prefer clear functions over hidden side effects.
- Keep state changes explicit and testable.
Output Requirements
For each finding provide:
- Location
- Failure mode
- User impact
- Minimal fix
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: caraya
- Source: caraya/agent-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
Reviews
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Versions
- v0.1.0 Imported from the upstream source.