ContrastAPI

ContrastAPI is a free, open-source security intelligence MCP server and REST API exposing 53 tools for AI agents, covering CVE/KEV/CWE lookup with EPSS scoring, MITRE ATLAS (AI/ML attack techniques), D3FEND defenses, Sigma detection rules, domain reconnaissance, IP threat reports, IOC enrichment, email security posture (SPF/DMARC/DKIM), and web intelligence. It delivers structured, LLM-optimized JSON responses and works with Claude Desktop, Cursor, VS Code, and any MCP-compatible client. Available via Python SDK, Node.js SDK, cURL, or direct MCP integration with no signup or API key required on the free tier.