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Arch Tools — Phone Validate
x402
Arch Tools — Phone Validate is a paid API for AI agents from archtools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Validates a phone number and returns its validity, format, and metadata, optionally scoped to a specific country.
Price / call$0.01
Success—
StatusUnknown
How this service works
E.164 format, type, country code. Pay per call with USDC (x402) or credits - archtools.dev
Output
A JSON object indicating whether the phone number is valid, its normalized/formatted form, the detected country, line type (mobile, landline, VOIP, etc.), and optionally carrier information.
Example use cases
Form submission phone validation
“Before we save this new user's profile, can you validate their phone number +44 7911 123456 and confirm it's a valid UK mobile number?”
CRM contact list cleanup
“I have a contact in my CRM with phone number +1-800-555-0199 listed as US — can you check whether that's actually a valid number and what type of line it is?”
Fraud detection on sign-up
“A new account just registered with the phone number +55 11 91234-5678 from Brazil — can you validate it and tell me if it looks like a real mobile number?”
Technical details
Endpoint
POSThttps://archtools.dev/v1/tools/phone-validateWhen to prefer
Use this endpoint when you need per-number phone validation with country-scoped checking, line-type detection, and normalization in a single call. Prefer it over regex-only checks when you need carrier or line-type metadata, or when you need to confirm a number is actually dialable in a given country.
Side effects
- Invalid or unparseable phone number string returns a validation failure response
- Unsupported country code may yield incomplete or lower-confidence results
- Missing required 'phone' field returns a 400-level error
- Ambiguous number without a country hint may resolve incorrectly
- Payment failure (insufficient USDC balance) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| phone | string | Phone number to validate |
| country | string | ISO 3166-1 alpha-2 country code (e.g. US, GB) |
Tags
x402
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