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Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.
About
Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.
Remote endpoints: sse: https://email-deliverability.api.klymax402.com/mcp
Security Report
Valid MCP server (1 strong, 0 medium validity signals). 5 known CVEs in dependencies Imported from the Official MCP Registry. Trust signals: trusted author (116/119 approved).
1 tool verified · Open access · 5 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-br0ski777-email-deliverability": {
"url": "https://email-deliverability.api.klymax402.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Email Deliverability Audit API
Email deliverability audit for any domain. SPF, DKIM, DMARC, MX validation with score 0-100 and fix recommendations. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"email-deliverability": {
"url": "https://email-deliverability.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl "https://email-deliverability.api.klymax402.com/api/audit?domain=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
email_audit_deliverability | GET | /api/audit | $0.012 | Audit email deliverability for a domain — checks SPF, DKIM, DMARC, MX records |
email_audit_deliverability | POST | /api/audit | $0.012 | Audit email deliverability for a domain — checks SPF, DKIM, DMARC, MX records (POST variant) |
email_audit_deliverability
Use this when you need to audit email deliverability configuration for a domain. Returns structured JSON with authentication record analysis and a deliverability score 0-100.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
domain | string | yes | Domain to audit (e.g. example.com, gmail.com) |
Example response:
{"score":65,"spf":{"found":true,"valid":true,"record":"v=spf1 include:_spf.google.com ~all"},"dkim":{"google":true,"default":false},"dmarc":{"found":true,"policy":"none","record":"v=DMARC1; p=none"},"mx":[{"priority":10,"exchange":"alt1.gmail-smtp-in.l.google.com"}],"recommendations":["Upgrade DMARC policy from none to quarantine","Add DKIM for default selector"]}
When to use: launching email campaigns, onboarding new domains for outreach, or diagnosing inbox placement issues. Essential for email marketers, sales teams, and IT admins managing domain reputation.
Not for: single email validation (use email_verify_address), finding email addresses (use email_find_by_name), domain WHOIS/DNS (use domain_lookup_intelligence).
email_audit_deliverability
Use this when you need to audit email deliverability configuration for a domain. Returns structured JSON with authentication record analysis and a deliverability score 0-100. POST variant of email_audit_deliverability -- same params passed as JSON body instead of query string.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
domain | string | yes | Domain to audit (e.g. example.com, gmail.com) |
Example response:
{"score":65,"spf":{"found":true,"valid":true,"record":"v=spf1 include:_spf.google.com ~all"},"dkim":{"google":true,"default":false},"dmarc":{"found":true,"policy":"none","record":"v=DMARC1; p=none"},"mx":[{"priority":10,"exchange":"alt1.gmail-smtp-in.l.google.com"}],"recommendations":["Upgrade DMARC policy from none to quarantine","Add DKIM for default selector"]}
When to use: launching email campaigns, onboarding new domains for outreach, or diagnosing inbox placement issues. Essential for email marketers, sales teams, and IT admins managing domain reputation.
Not for: single email validation (use email_verify_address), finding email addresses (use email_find_by_name), domain WHOIS/DNS (use domain_lookup_intelligence).
Example agent prompts
- "Audit email deliverability configuration for a domain"
- "Audit email deliverability configuration for a domain"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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