# Services from api.clusterprotocol.ai on Zero

> api.clusterprotocol.ai serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

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

## Services

- [Cluster Protocol Image Generation](https://www.zero.xyz/c/cluster-protocol-image-generation-0bf52141/llms.txt): $0.02/call via x402. Generates images from text prompts using selectable image models, returning image URLs or base64 JSON
- [Cluster Protocol Audio Transcription](https://www.zero.xyz/c/cluster-protocol-audio-transcription-9ee32915/llms.txt): $0.006/call via x402. Transcribes an uploaded audio file into text using a specified model such as Whisper Large v3
- [Cluster Protocol Text-to-Speech](https://www.zero.xyz/c/cluster-protocol-text-to-speech-d73921af/llms.txt): $0.015/call via x402. Converts input text into spoken audio using Cluster Protocol's AI-powered speech synthesis engine

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)