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BlockRun Phone Number Lookup
x402
BlockRun Phone Number Lookup is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.010000/call, not verified (last probed 2026-10-31); live alternatives: agentsvc.io Phone Number Validator ($0.0045) and 2s.io Phone Number Normalize ($0.001).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: agentsvc.io Phone Number Validator ($0.0045) · 2s.io Phone Number Normalize ($0.001).
Looks up information about a phone number provided in E.164 format, paid per-call in USDC with no API key required.
Price / call$0.010000
Success50%
StatusUnknown
How this service works
BlockRun independently tests AI agents that move money: did they pay the right party the right amount, avoid being scammed, stay within their mandate, and tell the truth afterwards. Scored from the ledger, not by a model judge.
Output
Returns metadata about the provided phone number, likely including carrier, line type (mobile/landline/VoIP), geographic region, and possibly owner/identity information. Response is paid per-call at $0.01 USDC settled on Base or Solana.
Example use cases
Example prompt
“Can you look up the phone number +14155552671 and tell me what carrier it's on, what type of line it is, and what region it's registered in?”
Technical details
Endpoint
POSThttps://blockrun.ai/api/v1/phone/lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick, pay-as-you-go phone number enrichment without managing API keys. Ideal for agents needing carrier, line type, or geographic metadata on a single phone number, especially when operating in a crypto-native payment context using USDC on Base or Solana.
Side effects
- Invalid E.164 format returns validation error
- Phone number not found in lookup database returns empty or null result
- Insufficient USDC balance causes payment failure and 402 response
- Unsupported country code may return no data
- Rate limiting or network errors may return 5xx responses
Input
{
"phoneNumber": "+1234567890"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| phoneNumber | string | Phone number to look up in E.164 format. |
Output
{
"url": "https://lookups.twilio.com/v2/PhoneNumbers/+1234567890",
"valid": false,
"pre_fill": null,
"sim_swap": null,
"caller_name": null,
"line_status": null,
"country_code": null,
"phone_number": "+1234567890",
"identity_match": null,
"call_forwarding": null,
"national_format": "234567890",
"sms_pumping_risk": null,
"reassigned_number": null,
"validation_errors": [
"TOO_SHORT"
],
"calling_country_code": null,
"line_type_intelligence": null,
"phone_number_quality_score": null
}Schema · Response
| Field | Type | Description |
|---|---|---|
| urlrequired | string | |
| validrequired | boolean | |
| pre_fillrequired | null | |
| sim_swaprequired | null | |
| caller_namerequired | null | |
| line_statusrequired | null | |
| country_coderequired | null | |
| phone_numberrequired | string | |
| identity_matchrequired | null | |
| call_forwardingrequired | null | |
| national_formatrequired | string | |
| sms_pumping_riskrequired | null | |
| reassigned_numberrequired | null | |
| validation_errorsrequired | array | |
| calling_country_coderequired | null | |
| line_type_intelligencerequired | null | |
| phone_number_quality_scorerequired | null |
Tags
x402
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