Email Verification API
Verify emails: syntax, MX records, disposable detection, quality score 0-100. x402 USDC.
Open source Repository Open in the app JSON README (API)
About
Verify emails: syntax, MX records, disposable detection, quality score 0-100. x402 USDC.
Details
- Kind
- MCP servers
- Topic
- Finance & crypto
- Publisher
- br0ski777
- Origin
- official
- Category
- ferramentas
- Transport
- sse
- Version
- 1.2.0
- Last push
- 2026-09-02T19:55:52Z
- 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-verification
README
# Email Verification API
[](https://email-verification.api.klymax402.com/mcp)
[](https://x402.org)
[](LICENSE)
Real-time email verification API. Syntax, MX, disposable detection, role-based flags, quality score 0-100. Built for agent outreach pipelines. 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-verification": {
"url": "https://email-verification.api.klymax402.com/mcp"
}
}
}
```
## Quickstart -- HTTP (x402)
```bash
curl -X POST "https://email-verification.api.klymax402.com/api/verify" \
-H "Content-Type: application/json" \
-d '{"email":"user@example.com"}'
# -> 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_verify_address` | POST | `/api/verify` | $0.005 | Verify a single email address |
| `email_verify_batch` | POST | `/api/verify/batch` | $0.03 | Verify up to 100 email addresses in batch |
### `email_verify_address`
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.
**Parameters**
| Name | Type | Required | Description |
|---|---|---|---|
| `email` | string | yes | Email address to verify (e.g. user@example.com) |
Example response:
```json
{"valid":true,"syntax":true,"mx":true,"disposable":false,"role":false,"free":true,"score":85,"email":"john@gmail.com"}
```
**When to use**: 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.
**Not for**: finding emails (use `email_find_by_name`), person data (use `person_enrich_from_email`), domain deliverability audit (SPF/DKIM/DMARC) (use `email_audit_deliverability`).
### `email_verify_batch`
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.
**Parameters**
| Name | Type | Required | Description |
|---|---|---|---|
| `emails` | array | yes | Array of email addresses (max 100) |
Example response:
```json
{"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}}
```
**When to use**: bulk list cleaning, CRM hygiene, or pre-campaign validation. Essential when you have 5+ emails to verify at once.
**Not for**: single emails (use `email_verify_address`), finding emails (use `email_find_by_name`).
## Example agent prompts
- "Verify email deliverability in real-time"
- "Validate multiple email addresses at once (up to 100)"
## 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