mcp server

Email Verification API

Verify emails: syntax, MX records, disposable detection, quality score 0-100. x402 USDC.

Description as published by the maintainer. Source

• version 1.2.0
• active

active — Most recent push to the repository was 2026-07-19.

What this server can do

2 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

email_verify_address(email)

Verify email deliverability in real-time. Alternative to Hunter email-verifier at 15x lower cost. Returns a structured JSON report with syntax, MX, disposable detection, role-based flags, and quality score 0-100. 1. valid (boolean) -- overall verdict 2. syntax (boolean) -- RFC 5322 format check 3. mx (boolean) -- domain has working mail servers 4. disposable (boolean) -- Mailinator, Guerrilla Mail, 100+ throwaway providers 5. role (boolean) -- role-based address (admin@, info@, support@) 6. free (boolean) -- free provider (Gmail, Yahoo, Outlook) 7. score (number 0-100) -- composite quality score Example output: {"valid":true,"syntax":true,"mx":true,"disposable":false,"role":false,"free":true,"score":85,"email":"john@gmail.com"} Use this BEFORE sending outreach emails, adding contacts to CRM, or processing signups. Essential for verifying email deliverability, cleaning email lists, detecting fake registrations, and qualifying leads. Drop-in replacement for Hunter email verification. Do NOT use for finding emails -- use email_find_by_name instead. Do NOT use for person data -- use person_enrich_from_email instead. Do NOT use for domain deliverability audit (SPF/DKIM/DMARC) -- use email_audit_deliverability instead. Required: email.

email_verify_batch(emails)

Use this when you need to validate multiple email addresses at once (up to 100). Returns a JSON array of verification results plus summary counts. 1. results (array) -- each entry has valid, syntax, mx, disposable, role, free, score 2. summary.total (number) -- total emails processed 3. summary.valid (number) -- count of valid emails 4. summary.invalid (number) -- count of invalid emails 5. summary.disposable (number) -- count of disposable addresses caught Example output: {"results":[{"email":"a@test.com","valid":true,"score":90},{"email":"b@mailinator.com","valid":false,"score":10}],"summary":{"total":2,"valid":1,"invalid":1,"disposable":1}} Use this FOR bulk list cleaning, CRM hygiene, or pre-campaign validation. Essential when you have 5+ emails to verify at once. Do NOT use for single emails -- use email_verify_address instead. Do NOT use for finding emails -- use email_find_by_name instead. Required: emails.

Last successful function declaration observed on 2026-08-13. Source: https://email-verification.api.klymax402.com/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on 2026-08-13. Source: https://email-verification.api.klymax402.com/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Repository — https://github.com/Br0ski777/email-verification-x402
• Website — https://github.com/Br0ski777/email-verification-x402
• Remote endpoint (sse) — https://email-verification.api.klymax402.com/mcp

Related, by what their authors tagged them

• Email Finder API — last commit 2026-07-19, shares email, validation, x402
  Find email addresses from name and company domain. x402 paid.
• Phone Number Validation API — last commit 2026-07-19, shares validation, x402
  Validate phone numbers worldwide: carrier, line type, country, E.164. x402.
• SMS Validator API — last commit 2026-07-19, shares validation, x402
  Validate SMS-capable phone numbers — mobile vs landline, E.164 format. x402 micropayment.
• io.github.cammac-creator/ibanforge — last commit 2026-08-06, shares validation, x402
  Pre-payout IBAN screening for AI agents: validation, sanctions, Swiss clearing, risk scoring
• dev.safeprompt/mcp — last commit 2026-08-03, shares validation
  Detect prompt injection, jailbreaks, and code injection in untrusted text before it reaches an LLM.
• io.github.agenson-horrowitz/agent-output-guard — last commit 2026-04-05, shares validation
  Validate and verify data from other agents before acting on it. Zero LLM costs.
• io.github.archradhq/deterministic — last commit 2026-05-21, shares validation
  Deterministic IR/IR-LINT validation, policy packs, drift vs exports (archrad). Apache-2.0.
• io.github.cdeust/ai-architect-mcp-spec — last commit 2026-08-04, shares validation
  PRD verification and host-driven generation with multi-judge consensus across 17 MCP tools.
• io.github.cdeust/prd-spec-generator — last commit 2026-08-04, shares validation
  Turns a feature description into a verified 9-file PRD — multi-judge consensus, 17 MCP tools.
• io.github.davidmosiah/mcp-scorecard — last commit 2026-08-06, shares validation
  Agent-readiness scorecard for any MCP server: 10 checks, 0-100 score, actionable findings.

These share tags the maintainers applied themselves, such as email, validation, x402. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.

This is not a recommendation and not a test result. It is a map of what the authors said their work is about.

Also from br0ski777

• Address Validator API — last commit 2026-07-19
  Parse, validate and normalize postal addresses. Detect country, verify format. x402.
• AI Text Summarizer API — last commit 2026-07-19
  Summarize text or URLs into key points with compression ratio and reading time. x402 USDC.
• Airdrop Checker API — last commit 2026-07-19
  Check wallet eligibility for active crypto airdrops — LayerZero, EigenLayer, Scroll. x402.
• Barcode Generator API — last commit 2026-07-18
  Generate barcodes — EAN-13, UPC-A, Code128, Code39. Returns SVG. x402 micropayment.
• Base DeFi Yield Optimizer API — last commit 2026-07-19
  Base chain DeFi yields — Aerodrome, Moonwell, APY, TVL, risk scores. x402.
• Base64 Codec API — last commit 2026-07-18
  Encode/decode base64 and URL-safe base64. x402 micropayment.
• Cross-Chain Bridge Route API — last commit 2026-07-19
  Best cross-chain bridge routes with fees, time, providers. LI.FI-powered. x402.
• Code Sandbox API — last commit 2026-07-31
  Execute Python, JavaScript, SQL code in a sandbox. x402 micropayment.
• Color Palette Generator API — last commit 2026-07-18
  Generate harmonious color palettes — complementary, analogous, triadic. x402 micropayment.
• Company Enrichment API — last commit 2026-07-31
  Company firmographics from domain: name, socials, tech stack, emails, phone, address

How the author describes it

Topics the maintainer set on GitHub: ai-agents, email, mcp, mcp-server, validation, x402.