# Services from pool.linkrra.com on Zero

> pool.linkrra.com 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/pool.linkrra.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/pool.linkrra.com/health.json

## Services

- [Linkrra Pearl Pool — OpenAI-Compatible Chat Completions via x402](https://www.zero.xyz/c/linkrra-pearl-pool-openai-compatible-chat-completions-via-x402-9b1aa2d0/llms.txt): $0.01/call via x402. Runs an OpenAI-compatible chat completion request, charging $0.01 USDC per call via the x402 payment protocol on Base mainnet
- [Linkrra Pearl Pool Text-to-Speech (TTS)](https://www.zero.xyz/c/linkrra-pearl-pool-text-to-speech-tts-11fbec44/llms.txt): $0.01/call via x402. Converts text input to speech audio (WAV) via an OpenAI-compatible API, paid per request in USDC on Base using the x402 payment protocol
- [Linkrra Pearl Pool — USDC Top-Up via x402](https://www.zero.xyz/c/linkrra-pearl-pool-usdc-top-up-via-x402-470d2151/llms.txt): $1/call via x402. Tops up a Linkrra Pearl Pool account balance by initiating a USDC payment on Base via the x402 payment protocol, returning the updated credit balance.

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)