"An overview of REST (Representational State Transfer)" matching MCP connectors:

Query 90 days of honeypot probe data: IP reputation, scanners, CVE probing, TLS/SSH fingerprints.

A skeptical senior-engineer code reviewer over MCP: risk-scans unified diffs, flags AI-generated-code tells, reports complexity hotspots, scans for leaked secrets, and runs an OWASP security pass — real analyzers, no external APIs. Free tier, no signup.

Free lockfile malware check plus paid pre-install scan of any skill, tool, or package.

Check if an MCP server tool changed or hides injection patterns before you trust it.

Find known subdomains of a domain. Passive data; may include historic entries. List or count.

Scan the open TCP ports of your own public IP. Fast (32) or deep (65535). No key, no signup.

Linux kernel CVE analyzer: upload a .config, get a CycloneDX VEX report of affecting CVEs.

AI security scanner for Solidity + free CC0 dataset of Sherlock audit-competition acceptance rates.

Programmatic control of the Hiro security platform: scans, tasks, plans, and approvals.

Deep security scans of repos you own from your editor: dependency CVEs, SAST, git-history secrets.