Math and Statistics
math-stats.x402tookit.com · 10 paid endpoints · listed 2026-11-02
Welch two-sample or one-sample t-test: t statistic, degrees of freedom, p-value, confidence interval and Cohen's d.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | math-stats.x402tookit.com/ab-test A/B conversion test: rates, relative lift, two-proportion z-test p-value, confidence interval and a significance verdict. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/combinatorics Exact counts: factorial, combinations, permutations, with repetition, derangements and Catalan numbers, as big integers. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/confidence-interval Confidence interval for a mean (t interval from a list) or a proportion (Wilson and Wald from successes and trials). | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/correlation Pearson and Spearman correlation of two lists with p-values, plus the least-squares line, R squared and an optional prediction. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/distribution Probability density or mass, cumulative probability and quantiles for normal, binomial, Poisson and Student t distributions. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/gcd-lcm Greatest common divisor, least common multiple, Bezout coefficients and modular inverse for integers of any size. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/prime-factor Primality test and prime factorization of integers up to 10^19, with divisor count, divisor sum, Euler totient and number type. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/sample-size Required sample size for a survey (margin of error, optional finite population) or an A/B test (baseline, lift, power). | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/stats-describe Descriptive statistics for a list of numbers: mean, median, mode, spread, quartiles, outliers, skewness and kurtosis. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | math-stats.x402tookit.com/t-test Welch two-sample or one-sample t-test: t statistic, degrees of freedom, p-value, confidence interval and Cohen's d. | $0.02 | Polygon, Arbitrum, Base, Solana |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| Not checked yet. | ||||
Income on Base (7 days)
This provider's payout address is shared by several providers, so its income is not shown as its own.
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x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/math-stats.x402tookit.com