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Hermes Plant EmailGuard Validate
x402
Hermes Plant EmailGuard Validate is a paid API for AI agents from hermesplant.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Validates an email address for RFC5322 syntax, typo detection, disposability, role-based classification, and deliverability scoring
Price / call$0.02
Success—
StatusUnknown
How this service works
Deterministic email and contact data quality scorer. Returns validity, deliverability score, risk level, normalized form, classifications, and per-rule diagnostics. Pure function, no network calls.
Output
Returns a JSON object with a top-level 'valid' boolean, an array of per-rule check results (each with rule name, pass/fail, severity, evidence, and optional fix suggestion), an overall riskLevel (e.g. 'medium'), a normalized object with canonical address, localPart, and domain, a classification object indicating whether the address is role-based, disposable, free provider, or a typo candidate, and a numeric deliverabilityScore (0–100).
Example use cases
Example prompt
“Check whether alice@gnail.com is a valid, deliverable email address — I want to know if it's a typo, whether it's disposable or role-based, and what its deliverability score is.”
Technical details
Endpoint
GEThttps://hermesplant.com/api/agent-services/emailguard/validateWhen to prefer
Use this endpoint when you need deterministic, rule-level email validation with explicit per-check evidence rather than a simple pass/fail — especially when typo detection, disposable-provider screening, role-based classification, and a numeric deliverability score are all needed in a single call. Prefer this over generic syntax checkers when the agent needs structured audit trails per check rule.
Side effects
- Missing or malformed request body returns a 4xx error
- Empty or null email field causes validation failure
- Network timeout on DNS-based checks may delay or error response
- Unusual Unicode or internationalized email formats may not be fully supported
- Payment failure over x402 returns 402 with no result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| name | string | Optional contact name associated with the email. |
| string | The email address to validate and score. | |
| domain | string | Optional explicit domain hint (usually derived from email). |
| mxPresent | boolean | Caller-supplied hint whether the domain has MX records. Never performs DNS itself. |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true,
"checks": [
{
"fix": null,
"why": "Email must contain a valid local part and domain with a dot.",
"pass": true,
"rule": "rfc5322-syntax",
"evidence": "parsed local=alice domain=gnail.com",
"severity": "info"
},
{
"fix": "Use alice@gmail.com instead.",
"why": "Domain is close to a popular provider and may be a typo.",
"pass": false,
"rule": "typo-suggestion",
"evidence": "input domain=\"gnail.com\" suggestion=\"gmail.com\"",
"severity": "warn"
}
],
"riskLevel": "medium",
"normalized": {
"domain": "gnail.com",
"canonical": "alice@gnail.com",
"localPart": "alice"
},
"classification": {
"roleBased": false,
"disposable": false,
"freeProvider": false,
"typoSuggestion": "gmail.com"
},
"deliverabilityScore": 55
}
}Tags
x402
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