# Services from stats.openverbs.com on Zero

> stats.openverbs.com serves 4 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/stats.openverbs.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/stats.openverbs.com/health.json

## Services

- [OpenVerbs Statistics Percentile Calculator](https://www.zero.xyz/c/openverbs-statistics-percentile-calculator-7dc3d93a/llms.txt): $0.004/call via x402. Computes one or more percentile values from a numeric dataset
- [OpenVerbs Linear Regression](https://www.zero.xyz/c/openverbs-linear-regression-2f1b07ae/llms.txt): $0.004/call via x402. Fits a simple linear regression to paired x/y data arrays and optionally predicts y at a given x value
- [OpenVerbs Statistics – Pearson Correlation](https://www.zero.xyz/c/openverbs-statistics-pearson-correlation-c1c8b4b5/llms.txt): $0.004/call via x402. Computes the statistical correlation between two numerical series (x and y arrays)
- [OpenVerbs Statistics Summary](https://www.zero.xyz/c/openverbs-statistics-summary-2b9b77ba/llms.txt): $0.004/call via x402. Computes descriptive statistics (mean, variance, standard deviation, etc.) for a numeric array using population or sample formulas

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)