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PerCallAPI Caller ID Lookup
x402
PerCallAPI Caller ID Lookup is a paid API for AI agents from percallapi.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-01).
Looks up registered caller name (CNAM), real-time line status, telecom carrier, and line type for a phone number via Twilio.
Price / call$0.04
Success—
StatusUnknown
How this service works
Lookup registered caller name (CNAM identity), real-time line status (active vs. inactive), telecom carrier, and line type via Twilio. Provide ?phone=+14157012311.
Output
Returns the registered CNAM caller name, real-time line status (active vs. inactive), telecom carrier name, and line type (mobile, landline, or VoIP) for the provided phone number.
Example use cases
Screen unknown inbound callers
“I keep getting calls from +12125550193 — can you tell me the registered caller name, what carrier it's on, and whether it's a mobile, landline, or VoIP number?”
Fraud detection on sign-up
“A new user just registered with phone number +13105559876 — can you check if it's an active line and whether it's a VoIP or burner number before I approve the account?”
Validate contact list before campaign
“Before we send our SMS campaign, can you check if +18005551234 is an active line and what carrier it's registered to?”
Technical details
Endpoint
GEThttps://percallapi.com/caller-id?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined CNAM + carrier + line type + active status check in a single real-time call, backed by Twilio's telecom data. Prefer it over carrier-only lookup endpoints when caller name identity matters, or over static WHOIS/number databases when you need live line status.
Side effects
- Invalid or non-E.164 formatted phone number returns an error
- Number not found in CNAM registry returns empty caller name
- Twilio carrier lookup unavailable returns a timeout or service error
- Non-US numbers may return partial or no CNAM data
- Payment failure (x402) blocks the request from being processed
Input
Schema · Request body
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Tags
x402
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