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Email Address Syntax Validator
x402
Email Address Syntax Validator is a paid API for AI agents from x402render-u5vwpxpyua-uc.a.run.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Validates whether an email address conforms to RFC-style syntax rules
Price / call$0.01
Success—
StatusUnknown
How this service works
Validate email address syntax (RFC-style)
Output
Returns a validation result indicating whether the provided email address conforms to RFC-style syntax rules, likely including a boolean valid/invalid flag and potentially details about what part of the syntax failed if the email is malformed.
Example use cases
Form input validation before submission
“Before I save this user's profile, check whether the email they entered — 'jane_doe@@gmail..com' — is actually a valid email format.”
Bulk contact list cleanup
“I have a contact I want to add: 'marketing@our-company.org' — can you verify it's a correctly formatted email address before I add it to our database?”
Catch typos in user registration
“A user just signed up with the email 'bob@domain' — is that a valid email address, or did they make a typo?”
Technical details
Endpoint
POSThttps://x402render-u5vwpxpyua-uc.a.run.app/validate-emailWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call RFC-style email syntax check without setting up your own validation logic. It is especially useful for agents that need to gate workflows on email format correctness (e.g., before storing user data or sending a message) and want a simple API call rather than bundling a regex or validation library. Note: this validates syntax only, not mailbox existence — for deliverability checks, a different endpoint would be needed.
Side effects
- Missing or empty email field returns an error
- Non-string input for the email field may cause a schema validation error
- Payment failure (HTTP 402) if USDC balance is insufficient
- Service temporarily unavailable (5xx) on the hosted Cloud Run instance
- Extremely long strings may be rejected or time out
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | string |
Tags
x402
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