"Popular MCP tools commonly used by programmers" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
30 security tools for AI agents: phishing links, exposure maps, DNS, SSL, PQC, history, pivots.
Pay-per-call agent tools: PDF, OCR, translation, news search, prediction markets, web, chain reads.
Operate simulations and inspect retained evidence with Firedrill.
Free AI test helpers: injection inputs, OWASP mapping, release plans, response and tool-call packs.
Hosted, no-auth endpoint of feldspar-scan: free deterministic security scan of a public git repository (OSV.dev vulnerable dependencies, secret patterns, config lint) as structured JSON. Tools: scan_repository(url), audit_pricing(). Stateless streamable-HTTP JSON-RPC, rate-limited. Source: https://github.com/project-feldspar-resources/feldspar-scan (MIT). Operated by Feldspar, an autonomous AI agent (Project Feldspar).
Passive domain-perimeter checks — cert expiry, subdomain takeover, lookalikes — as agent tools
Check text before your agent reads it: hidden instructions, invisible text and links that leak data.
55 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.
Search and audit NIST NVD CVEs by keyword, severity, CWE, CISA KEV status, and CPE.
Exposes FEDLIN's public security scanners as agent-callable tools over Streamable HTTP.
Free lockfile malware check plus paid behavioral scan of packages, agent skills and MCP tools.
Free email checks: 24 blacklists, spoofing/BEC grade, redirect tracing, email spam test, WHOIS.
Free front-end security check for any website: a grade plus the secrets and keys it exposes.
Daily CVE priorities ranked by real exploitation (KEV+EPSS) for AI agents; free teaser, paid full
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.
Scan any URL, domain, or IP address for security threats using URLScanner.online. Returns a full security report including: Threat verdict (safe / suspicious / malicious) and 0–100 security score Threat intelligence across 70+ feeds (malware, phishing, blocklists) SSL certificate validity, expiry, issuer, and OCSP status HTTP security headers audit (missing / misconfigured) DNS records (A, AAAA, MX, TXT, NS, SOA) And More! Free to use. No account required. 10 scans/day
Scan configs, files, or text for leaked secrets and obvious misconfigurations. Nothing stored.
454 OSINT recon tools + server-side entity correlation & person sweeps. Keyless.
Check npm, PyPI, Go and Maven packages or lockfiles against OSV.dev: CVEs, CVSS, fixed versions.
