Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan via MCP. STDIO or Streamable HTTP.
Latest release v0.2.1 — v0.2.1: Registration lookup integrity · 30 Aug 2026
2 files for Claude Code, Codex and OpenCode: attack-surface-mcp-server AGENTS.md, attack-surface-mcp-server CLAUDE.md — 13,280 tokens loaded in every session.
AGENTS.md A 6,640 tok CLAUDE.md A 6,640 tok These files are cyanheads/attack-surface-mcp-server's own configuration — they tell Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.