Analyze Js
Analyze JavaScript files for API endpoints, secrets, URLs, emails, sensitive files, and bundler versions
Install
$ agentstack add skill-xrip-claude-skill-analyze-js-analyze-js ✓ 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 Used
- ✓ 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-xrip-claude-skill-analyze-js-analyze-js) 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
JS Analyzer Skill
Analyzes JavaScript files for security-relevant information using npx js-analyzer-cli. Works in any project without installation.
Command
npx js-analyzer-cli [OPTIONS] Detection Categories
- endpoints: REST APIs, GraphQL, OAuth, admin panels
- urls: External links, cloud storage, WebSockets
- secrets: API keys, tokens, JWT, credentials (auto-masked)
- emails: Valid addresses (test emails filtered)
- files: Sensitive file references (.env, configs, backups)
- bundlers: Detected bundlers with versions (Webpack, Vite, Rollup, etc.)
Auto-filters noise: build artifacts, module imports, XML namespaces.
Options
--verbose- Show progress details--format=json- JSON output (default: toon)--pretty- Pretty print JSON--no-recursive- Skip subdirectories
Directory Scanning
Default behavior:
- Finds
.js,.jsx,.mjsfiles - Skips
node_modules/and hidden dirs - Recursive by default
Output Format
TOON format (default) - compact, LLM-optimized:
summary:
total: 18
endpoints: 4
secrets: 1
findings:
endpoints[4 ]{value location}:
/api/v1/users bundle.js:42:15
/admin/dashboard bundle.js:234:12
secrets[1 ]{value location}:
AKIA...MPLE (AWS Key) bundle.js:312:25Location format: file:line:column (clickable in IDEs)
How to Present Results
Start with summary, highlight critical findings (secrets, admin endpoints), group by category.
Example:
📊 Analysis: bundle.js (18 findings)
🔴 Critical:
• AWS Key at bundle.js:312:25
• Admin endpoint at bundle.js:234:12
Endpoints (4): /api/v1/users (bundle.js:42:15), /admin/dashboard (bundle.js:234:12), ...
Bundler: Webpack 5.88.2Usage Flow
- Identify paths
- Add flags if needed
- Run:
npx js-analyzer-cli [flags] - Parse and present
Note: First run downloads package (~2s), then cached.
Security
For authorized testing only: pentesting, bug bounties, own applications, security audits.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: xrip
- Source: xrip/claude-skill-analyze-js
- 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.