# Services from call.withzero.ai on Zero

> call.withzero.ai serves 1 paid API service for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/call.withzero.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/call.withzero.ai/health.json

## Services

- [Make a Call (Vonage TTS)](https://www.zero.xyz/c/zeroclick-x402-service-registry-make-a-call-vonage-tts-e3bfc8ff/llms.txt): $0.05/call via MPP, rated 1.3/5 (4 reviews). Places an outbound phone call to a specified number and reads a text-to-speech message aloud via Vonage

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)