Email Deliverability Audit API
Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.
Open source Repository Open in the app JSON README (API)
About
Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.
Details
- Kind
- MCP servers
- Topic
- Communication
- Publisher
- br0ski777
- Origin
- official
- Category
- ferramentas
- Transport
- sse
- Version
- 1.1.0
- Last push
- 2026-09-02T19:55:47Z
- Repository state
- ativo
- Language
- TypeScript
- License
- MIT
- Added
- 2026-08-29 03:01:43
- Updated
- 2026-08-29 03:01:43
- Origin id
io.github.Br0ski777/email-deliverability
README
# Email Deliverability Audit API
[](https://email-deliverability.api.klymax402.com/mcp)
[](https://x402.org)
[](LICENSE)
Email deliverability audit for any domain. SPF, DKIM, DMARC, MX validation with score 0-100 and fix recommendations. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the [klymax402](https://klymax402.com) 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.):
```json
{
"mcpServers": {
"email-deliverability": {
"url": "https://email-deliverability.api.klymax402.com/mcp"
}
}
}
```
## Quickstart -- HTTP (x402)
```bash
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`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/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:
```json
{"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:
```json
{"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](https://x402.org) -- 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](https://atxp.ai) (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