# Services from x402-demo-api-theta.vercel.app on Zero

> x402-demo-api-theta.vercel.app serves 11 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/x402-demo-api-theta.vercel.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402-demo-api-theta.vercel.app/health.json

## Services

- [x402 Demo API - Text Translation](https://www.zero.xyz/c/x402-demo-api-text-translation-f6008d46/llms.txt): $0.04/call via x402. Translates text from one language to another using a paid x402 micropayment endpoint on Base mainnet
- [x402 Demo API – Crypto Price](https://www.zero.xyz/c/x402-demo-api-crypto-price-9ea5c95f/llms.txt): $0.02/call via x402. Returns the current price of a specified cryptocurrency using the x402 micropayment protocol on Base mainnet for $0.02 USDC per call.
- [x402 Demo API - Aggregator](https://www.zero.xyz/c/x402-demo-api-aggregator-28e41259/llms.txt): $0.08/call via x402. Aggregates multiple data sources (AI/LLM, crypto prices, web search, translation, trending topics, sentiment analysis) into a single paid API response using the x402 protocol on Base mainnet.
- [x402 Demo API - Web Search](https://www.zero.xyz/c/x402-demo-api-web-search-3e9045b1/llms.txt): $0.05/call via x402. Performs a paid web search query and returns results, using the x402 micropayment protocol on Base mainnet for $0.05 USDC per call.
- [x402 Demo API - URL Info](https://www.zero.xyz/c/x402-demo-api-url-info-0d63818e/llms.txt): $0.03/call via x402. Fetches metadata and information about a given URL using the x402 paid protocol on Base mainnet
- [x402 Demo API – Weather Endpoint](https://www.zero.xyz/c/x402-demo-api-weather-endpoint-2d00c012/llms.txt): $0.02/call via x402. Returns real weather data for a given location, paid per-call via x402 protocol on Base mainnet at $0.02 USDC.
- [x402 Demo API – Sentiment Analysis](https://www.zero.xyz/c/x402-demo-api-sentiment-analysis-9b222d6e/llms.txt): $0.05/call via x402. Analyzes the sentiment of a given text, returning a sentiment classification (e.g. positive, negative, neutral) and confidence score, paid via x402 protocol on Base mainnet.
- [x402 Demo API - LLM Endpoint](https://www.zero.xyz/c/x402-demo-api-llm-endpoint-c049a32d/llms.txt): $0.1/call via x402. Processes natural language prompts through an AI/LLM model, returning generated text responses, paid via x402 protocol on Base mainnet.
- [x402 Demo API - Trending Topics](https://www.zero.xyz/c/x402-demo-api-trending-topics-a3d79400/llms.txt): $0.04/call via x402. Returns currently trending topics, hashtags, or keywords via a paid x402 protocol endpoint on Base mainnet.
- [x402 Demo API – Quote Endpoint](https://www.zero.xyz/c/x402-demo-api-quote-endpoint-f2d8fc70/llms.txt): $0.02/call via x402. Returns a price quote for a selected data service (AI/LLM, crypto prices, web search, translation, trending topics, sentiment analysis, etc.) before executing the paid call via x402 protocol on Base mainnet.
- [x402 Demo API - Web Search](https://www.zero.xyz/c/x402-demo-api-web-search-d5c24b15/llms.txt): $0.05/call via x402. Performs a paid web search query using the x402 micropayment protocol on Base mainnet, returning search results for a given query.

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)