# Services from api.cra-agent.tech on Zero

> api.cra-agent.tech serves 5 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.cra-agent.tech
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.cra-agent.tech/health.json

## Services

- [CRA Agent Gas Fee Cost Estimator](https://www.zero.xyz/c/cra-agent-gas-fee-cost-estimator-888610a5/llms.txt): $0.0005/call via x402. Returns the estimated transaction cost in USDC for a given amount of gas, calculated at the current and next predicted base fee
- [CRA Agent Gas Fee Forecast](https://www.zero.xyz/c/cra-agent-gas-fee-forecast-c2fcd6f8/llms.txt): $0.001/call via x402. Returns current and next-block base fee, 24-hour fee band, utilisation trend, and cost per operation type for Ethereum gas fee forecasting
- [CRA Agent RPC Health Monitor](https://www.zero.xyz/c/cra-agent-rpc-health-monitor-ff991602/llms.txt): $0.0005/call via x402. Returns per-provider RPC latency, head lag, and error rates for the last 15 minutes
- [CRA AGENT FX Execution Data](https://www.zero.xyz/c/cra-agent-fx-execution-data-3a776e26/llms.txt): $0.001/call via x402. Returns volume-weighted execution rate, price range, rate by trade size, and volume distribution for a token pair traded against USDC on Arc
- [CRA AGENT Contract Deploy History](https://www.zero.xyz/c/cra-agent-contract-deploy-history-eb5fd38a/llms.txt): $0.002/call via x402. Returns recent smart contract deployments with labels and per-hour deploy history, paginated up to 1000 entries

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)