"Free tools or resources that do not require an API" matching MCP connectors:
Matching Connector Tools:
55 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.
Detect malicious or vulnerable npm packages: registry search, OSV.dev and GitHub advisory lookups
Scans MCP servers for tool poisoning, prompt injection and supply chain risks.
Scan any website or MCP server for agent-trust-readiness; returns a signed, verifiable scorecard.
Verify a skill, tool, or package for malicious behavior before your agent installs it. Hosted.
No-account public website privacy risk scans with 20 new scans/day and free recent-result reuse.
Scan any public site for AI-agent visibility; get scored findings, a machine-readable fix pack, and
Security, SEO and AI-visibility scanner for web apps · free scans and focused checks via MCP.
Free no-account URL security scan: 0-100 Launch Readiness score for any live site in ~15 seconds.
Post-quantum cryptography (PQC) vulnerability scanner. Detects ECDSA, RSA, AES-128 and other quantum-vulnerable algorithms in GitHub/GitLab/Bitbucket repos and Ethereum smart contracts. Returns risk score 0-100, CBOM (CycloneDX 1.6), and migration paths to NIST FIPS 203/204/205. Free tier: 10 scans/day, no key required.
Find known subdomains of a domain. Passive data; may include historic entries. List or count.
Scan configs, files, or text for leaked secrets and obvious misconfigurations. Nothing stored.
Scan the open TCP ports of your own public IP. Fast (32) or deep (65535). No key, no signup.
Scans remote MCP servers for protocol, security, and TLS issues; exposes scan tools via MCP.
CyberShield - 12 cybersecurity tools: NIS2 mapping, MITRE ATT&CK, vulns, threat intel.
Security tools for AI agents: scan MCP servers, validate HDP delegation chains, audit releases.
CVE lookups (NVD) and dependency-manifest audits (OSV) for AI agents. No API keys.
Five free MCP tools, including proof-before-payment preview, plus one authorized x402 pack.
MCP server for Pentest-Tools.com: run scans, manage findings and reports via your preffered LLM.