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wtsp.dev WhatsApp Phone Lookup
x402
wtsp.dev WhatsApp Phone Lookup is a paid API for AI agents from wtsp.dev, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-11).
Looks up a phone number on WhatsApp to return registration status, account type, business profile, device info, and carrier details.
Price / call$0.006
Success—
StatusUnknown
How this service works
Look up any phone number on WhatsApp: registration, business profile, profile photo and carrier. AI agents pay per request in USDC on Base with x402. No sign-up, no API key.
Output
A JSON object containing: E.164 formatted phone number, hasWhatsApp boolean, accountType (personal or business), identity (LID and country code), profile about text and privacy flag, optional business object with display name, description, categories, email, websites, address, geo-coordinates, timezone, business hours, member since date, Facebook page link, commerce settings, verification level, and device info (count and whether hosted on WhatsApp Business Platform). Returns a minimal object with hasWhatsApp: false if number is not registered.
Example use cases
Verify customer WhatsApp before outreach
“Before we send that campaign, check if the number +447911123456 is actually registered on WhatsApp and whether it's a personal or business account.”
Enrich business lead with WhatsApp details
“I have this business phone number +5511999887766 — can you look it up on WhatsApp and get me their business name, description, hours, and website?”
Detect WhatsApp Business API accounts
“Is +12125550199 a real WhatsApp Business API hosted number, or just a regular phone? I need to know if they're running automated messaging.”
Technical details
Endpoint
GEThttps://wtsp.dev/v1/profile?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time WhatsApp registration and business profile data for a specific phone number without managing API keys or subscriptions. It is ideal for contact enrichment pipelines, lead qualification, fraud detection, or pre-outreach verification where you want to confirm WhatsApp presence and retrieve structured business metadata in a single pay-per-use call. Prefer it over manual lookups or scraping when operating at scale with per-call billing via USDC on Base.
Side effects
- Invalid phone number format returns a 400 error
- Number not registered on WhatsApp returns hasWhatsApp: false with no profile data
- Rate limits or WhatsApp availability issues may return 5xx errors
- Payment failure via x402 results in 402 Payment Required
- Business profile fields may be absent if privacy settings restrict them
- Device count may be absent if WhatsApp does not return a device list
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"phone": "+14155552671",
"devices": {
"count": 2,
"hosted": false
},
"profile": {
"about": "Fresh groceries, delivered daily 🍋",
"aboutRestricted": false
},
"business": {
"email": "hello@freshmarket.example",
"hours": [
{
"day": "mon",
"mode": "specific_hours",
"openTime": "08:00",
"closeTime": "20:00"
},
{
"day": "sat",
"mode": "specific_hours",
"openTime": "09:00",
"closeTime": "18:00"
},
{
"day": "sun",
"mode": "appointment_only",
"openTime": null,
"closeTime": null
}
],
"address": "123 Market St, San Francisco, CA 94103",
"latitude": 37.7749,
"timezone": "America/Los_Angeles",
"websites": [
"https://freshmarket.example"
],
"longitude": -122.4194,
"categories": [
"Grocery Store",
"Food delivery"
],
"cartEnabled": true,
"description": "Neighbourhood grocery with same-day delivery across San Francisco.",
"displayName": "Fresh Market SF",
"memberSince": "Joined in March, 2021",
"businessType": "smb",
"automatedType": "unknown",
"memberSinceTs": 1615420800,
"verifiedLevel": "unknown",
"commerceExperience": "none",
"linkedFacebookPage": {
"id": "100064523310987",
"name": "Fresh Market SF",
"likes": 1840
}
},
"identity": {
"lid": "258166877098174@lid",
"countryCode": "US"
},
"checkedAt": "2026-10-09T18:24:03.000Z",
"accountType": "business",
"hasWhatsApp": true
}
}Tags
x402
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