Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"com-skillssafe-scanner": {
"args": [
"-y",
"npm"
],
"command": "npx"
}
}
}Are you the author?
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Free, no-signup security scanner for AI agent skills. Scan any SKILL.md, MCP config, or system_prompt for threats before installing.
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Five weighted categories — click any category to see the underlying evidence.
Packing does not respect root-level ignore files in workspaces
### Impact `npm pack` ignores root-level `.gitignore` & `.npmignore` file exclusion directives when run in a workspace or with a workspace flag (ie. `--workspaces`, `--workspace=<name>`). Anyone who has run `npm pack` or `npm publish` with workspaces, as of [v7.9.0](https://github.com/npm/cli/releases/tag/v7.9.0) & [v7.13.0](https://github.com/npm/cli/releases/tag/v7.13.0) respectively, may be affected and have published files into the npm registry they did not intend to include. ### Patch - Up
Incorrect Permission Assignment for Critical Resource in NPM
An issue was discovered in an npm 5.7.0 2018-02-21 pre-release (marked as "next: 5.7.0" and therefore automatically installed by an "npm upgrade -g npm" command, and also announced in the vendor's blog without mention of pre-release status). It might allow local users to bypass intended filesystem access restrictions because ownerships of /etc and /usr directories are being changed unexpectedly, related to a "correctMkdir" issue.
Local Privilege Escalation in npm
Affected versions of `npm` use predictable temporary file names during archive unpacking. If an attacker can create a symbolic link at the location of one of these temporary file names, the attacker can arbitrarily write to any file that the user which owns the `npm` process has permission to write to, potentially resulting in local privilege escalation. ## Recommendation Update to version 1.3.3 or later.
npm CLI exposing sensitive information through logs
Versions of the npm CLI prior to 6.14.6 are vulnerable to an information exposure vulnerability through log files. The CLI supports URLs like `<protocol>://[<user>[:<password>]@]<hostname>[:<port>][:][/]<path>`. The password value is not redacted and is printed to stdout and also to any generated log files.
npm Vulnerable to Global node_modules Binary Overwrite
Versions of the npm CLI prior to 6.13.4 are vulnerable to a Global node_modules Binary Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a `serve` binary, any subsequent installs of packages that also create a `serve` binary would overwrite the first binary. This will not overwrite system binaries but only binaries put into the global node_modules directory. This b
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Free, no-signup security scanner for AI agent skills.
Scan any SKILL.md, MCP config, or system_prompt for threats before installing.
As AI agents become more powerful, malicious skills can steal credentials, exfiltrate data, or hijack your agent's behavior. SkillsSafe scans skill files before you install them — the same way an antivirus scans software before you run it.
Supported platforms: OpenClaw · Claude Code · Cursor · Codex · any MCP-compatible agent
Paste content, enter a URL, or upload a file to scan for:
| Threat | Description |
|---|---|
| Credential Theft | Attempts to access API keys, tokens, or passwords |
| Data Exfiltration | Skills that send your data to external servers |
| Prompt Injection | Hidden instructions that hijack agent behavior |
| Shell Injection | Reverse shell or arbitrary command execution |
| Zero-Width Characters | Invisible Unicode characters hiding malicious instructions |
| Scope Creep | Skills requesting permissions beyond their stated purpose |
| Memory Poisoning | Attempts to corrupt agent memory or context |
| Privacy Risk | Unnecessary access to personal or sensitive data |
Each scan returns a risk score, severity rating (SAFE / CAUTION / DANGER / CRITICAL), and a shareable report link.
Visualize invisible Unicode characters (U+200B, U+200C, U+200D, U+FEFF, etc.) hidden inside text. Attackers embed these to create prompts that look safe to humans but carry hidden instructions for AI agents.
Native Model Context Protocol support — let your agent automatically check skill safety before installation. No API key required.
# OpenClaw (one-line setup)
openclaw mcp add https://skillssafe.com/api/mcp
Available MCP tools:
scan_url — Scan a skill by URLscan_content — Scan skill content directlyget_report — Retrieve a full scan reportWorks with any agent, script, or CI/CD pipeline.
# Scan by URL
curl -X POST https://skillssafe.com/api/v1/scan/url \
-H "Content-Type: application/json" \
-d '{"url": "https://clawhub.ai/skills/example"}'
# Scan by content
curl -X POST https://skillssafe.com/api/v1/scan/content \
-H "Content-Type: application/json" \
-d '{"content": "...skill content..."}'
Full OpenAPI spec: https://skillssafe.com/api/v1/openapi.json
| Route | Description |
|---|---|
/ | Main security scanner |
/zero-width-detector | Hidden Unicode character detector |
/api-docs | Interactive API documentation |
/integrate | Integration guide for MCP & REST API |
/feedback | Bug reports and feature requests |
npm install
npm run dev
Open http://localhost:3000 in your browser.
# .env.local
# (see wrangler.toml for Cloudflare Workers configuration)
@opennextjs/cloudflare100% Free · No Signup · No Rate Limits for Humans
API rate limit: 60 requests/hour (no API key required).
Found a bug or false positive? Send feedback or email support@skillssafe.com.
SkillsSafe is an independent security tool, not affiliated with Anthropic, OpenClaw, or Cisco.