# AgentServices Phone Number Lookup

> AgentServices Phone Number Lookup is a paid API for AI agents from agentservices.to, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Looks up carrier, owner, and metadata associated with a given phone number

## Facts

- Endpoint: POST https://agentservices.to/v1/lookup/%7Bphone_number%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentservices-phone-number-lookup-a6156733
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SOyrthky_EP20LaFCpXS2

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentservices-phone-number-lookup-a6156733 -d '<json body>'
```

Example prompt: Can you look up the carrier, line type, and owner info for the phone number +14155552671?

## When to prefer this

Choose this endpoint when you need fast, pay-per-call phone number intelligence without a subscription — particularly suited for AI agents using x402 micropayments on Base. Ideal for validating phone numbers before outreach, enriching contact records with carrier data, or performing reverse lookups on unknown numbers. Prefer this over subscription-based telco APIs when usage is sporadic or agent-driven.

## Known failure modes

- Invalid or malformed phone number format returns an error
- Phone number not found in database returns empty or null owner fields
- Unsupported country or region may return partial data
- Payment failure via x402 results in 402 response and no data returned
- Rate limiting may apply for high-frequency callers

## How this service works

Paid data APIs for AI agents. Crypto market data, DeFi yields, IP geolocation, dispute resolution, marketing intelligence. Powered by x402 micropayments on Base.

## Output

Returns structured metadata about the phone number including carrier name, line type (mobile, landline, VoIP), owner name where available, country, and regional information. Paid via x402 micropayment of $0.05 USDC per call on Base.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentservices-phone-number-lookup-a6156733/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentservices.to](https://www.zero.xyz/host/agentservices.to/llms.txt)