DNS Doctor MCP server

DNS Doctor — Claude Code plugin & DNS skill (DMARC, SPF, DKIM)

Scan, fix and verify a domain's DNS — email authentication (SPF, DMARC, DKIM) first, plus multi-region propagation, SPF include supply-chain audits, MX, DNS health, blacklists and domain/SSL expiry — from inside Claude. This plugin bundles the DNS Doctor skill (the scan → diagnose → fix workflow) and an MCP server config pointing at the hosted DNS Doctor tools.

The moat: every fix record you get back is generated and validated by a deterministic engine — RFC grammar plus the SPF 10-lookup counter — never an LLM guess. Your agent hands the human a record that already parses correctly, not a plausible-looking string that silently fails.

What's inside

claude-plugin/
├── .claude-plugin/plugin.json   # plugin manifest
├── .mcp.json                    # MCP server: https://dnsdoctor.dev/mcp (HTTP)
├── skills/dns-doctor/SKILL.md   # the scan → diagnose → fix workflow
├── src/                         # @dnsdoctor/mcp — the local stdio MCP server
├── tools.json                   # the 16 tool definitions (generated, never hand-edited)
├── instructions.txt             # the server's own `initialize` guidance (generated)
├── tests/                       # vitest suite for the stdio server
├── package.json  tsconfig.json  # npm package + build
├── LICENSE                      # Apache-2.0
└── README.md

Tools

Shortened. The full README is on GitHub.