# Services from tradeapex.ai on Zero

> tradeapex.ai serves 2 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/tradeapex.ai
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/tradeapex.ai/health.json

## Services

- [TradeAPEX Corpus Expansion](https://www.zero.xyz/c/tradeapex-corpus-expansion-a509ba56/llms.txt): $0.02/call via x402. Analyzes a text sample from your corpus and returns the top concepts most strongly linked to it that your corpus does not yet cover, along with linking terms and link strength scores.
- [TradeAPEX Related Concepts](https://www.zero.xyz/c/tradeapex-related-concepts-376594b5/llms.txt): $0.02/call via x402. Returns semantically related concepts for a given English word or short phrase using a self-derived semantic model (no transformer), with measured class-separation AUC of 0.846.

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)