Summary
Validates email addresses through a remote Cloudflare Workers API, exposing four MCP tools: single validation, batch validation (up to 100 emails), domain checks, and typo suggestions. Each validation returns syntax compliance (RFC 5322), MX record status, disposable/role-based detection, SPF/DKIM checks, and a 0-100 risk score. Reach for this when you need Claude to verify user input, clean email lists, or catch common typos like "gmial.com" before sending. The server runs on streamable-http transport at api.lazy-mac.com. Part of the lazymac ecosystem that bundles 42+ developer tools, though this standalone server focuses purely on email validation workflows.
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email-validator-api
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Comprehensive email validation API — syntax (RFC 5322), MX record lookup, disposable domain detection, role-based detection, SPF/DKIM checks, typo suggestions, and risk scoring (0-100). REST + MCP server.
Quick Start
npm install && npm start # http://localhost:3100
Endpoints
Validate Email
curl -X POST http://localhost:3100/validate \
-H "Content-Type: application/json" \
-d '{"email": "user@gmail.com"}'
# → {email, syntax, role, disposable, mx, domain, spf, dkim, typo, risk, deliverable}
Batch Validate (up to 100)
curl -X POST http://localhost:3100/validate/batch \
-H "Content-Type: application/json" \
-d '{"emails": ["a@gmail.com", "b@fake.xyz"]}'
# → {total, valid, invalid, results}
Domain Check
curl -X POST http://localhost:3100/domain \
-H "Content-Type: application/json" \
-d '{"domain": "gmail.com"}'
# → {domain, exists, mx, spf, dkim, is_disposable, is_free_provider, reputation_score}
Typo Suggestion
curl -X POST http://localhost:3100/suggest \
-H "Content-Type: application/json" \
-d '{"email": "user@gmial.com"}'
# → {original, has_suggestion, suggested: "user@gmail.com", reason}
MCP (JSON-RPC 2.0)
curl -X POST http://localhost:3100/mcp \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'
MCP Tools: validate_email, validate_batch, check_domain, suggest_fix
License
MIT
Related projects
- 🧰 lazymac-mcp — Single MCP server exposing 15+ lazymac APIs as tools for Claude Code, Cursor, Windsurf
- ✅ lazymac-api-healthcheck-action — Free GitHub Action to ping any URL on a cron and fail on non-2xx
- 🌐 api.lazy-mac.com — 36+ developer APIs, REST + MCP, free tier
💡 Host your own stack? Get $200 DigitalOcean credit via lazymac referral link.
Featured
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →Registryactive
TransportHTTP
UpdatedMay 16, 2026
