# Services from distribution.openverbs.com on Zero

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

## Services

- [Normal Distribution Calculator (PDF, CDF, Quantile)](https://www.zero.xyz/c/normal-distribution-calculator-pdf-cdf-quantile-02b0661a/llms.txt): $0.004/call via x402. Computes the probability density function (PDF), cumulative distribution function (CDF), or quantile (inverse CDF) for a normal (Gaussian) distribution given a mean, standard deviation, and evaluation point.
- [Binomial Distribution Calculator](https://www.zero.xyz/c/binomial-distribution-calculator-828c53be/llms.txt): $0.004/call via x402. Computes PMF, CDF, or quantile values for the binomial probability distribution given trial count, success probability, and number of successes.
- [Poisson Distribution Calculator](https://www.zero.xyz/c/poisson-distribution-calculator-8778589e/llms.txt): $0.004/call via x402. Computes PMF, CDF, or quantile (inverse CDF) for the Poisson distribution given a rate parameter λ and a count or probability value.
- [Probability Distributions – t-Distribution](https://www.zero.xyz/c/probability-distributions-t-distribution-97aedd46/llms.txt): $0.004/call via x402. Computes PDF, CDF, or quantile (inverse CDF) for the Student's t-distribution given a value and degrees of freedom

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)