ToolVet

Probability Calculators

10 x402 APIs served from probability-calc.x402tookit.com

Every listing from Probability Calculators that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
10 x402 APIs
Passing at the latest check
9 of 10
Uptime, 30 days
63.7% on average across 10 listings
Price
$0.02 per call
Trust score
32 to 63, median 62
Paying wallets, 30 days
No usage data
Verified owner
None
Security findings
None found
Listed since
20 Oct 2026

No usage data. The x402 Bazaar reports paying wallets for the x402 APIs it lists; MCP servers and APIs submitted directly have none.

All 10 listings

Ranked by trust score.

  • 63trust
    Streak OddsProbability Calculators

    Chance of a run: r successes in a row (or r identical outcomes) somewhere in n independent trials, like coin flips.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 522 msPassing, checked 9 h ago
  • 63trust
    MultinomialProbability Calculators

    Multinomial coefficient (arrangements of repeated items like MISSISSIPPI) and multinomial probability for given odds.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 528 msPassing, checked 10 h ago
  • 63trust
    Expected ValueProbability Calculators

    Expected value, variance, standard deviation and chance of profit for a list of payoffs with probabilities or weights.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 528 msPassing, checked 9 h ago
  • 63trust
    Dice OddsProbability Calculators

    Exact odds for dice pools: sum distribution, chance of reaching a target, mean and variance; supports drop-lowest like 4d6.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 524 msPassing, checked 9 h ago
  • 62trust
    Gamblers RuinProbability Calculators

    Gambler's ruin: probability of going broke before hitting a target, and expected number of bets, for repeated unit bets.

    x402 APIMarkets & finance
    $0.02per call on Polygon
    66.7% uptime, 536 msPassing, checked 10 h ago
  • 61trust
    Distribution TableProbability Calculators

    Exact pmf, cumulative and tail tables for geometric, negative binomial, hypergeometric, binomial and Poisson.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 556 msPassing, checked 4 h ago
  • 61trust
    BayesProbability Calculators

    Bayes' theorem: posterior probability from a prior, sensitivity and false-positive rate, with natural frequencies and odds form.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 512 msPassing, checked 5 h ago
  • 59trust
    Lottery OddsProbability Calculators

    Lottery odds: jackpot odds and every match tier for pick-k-of-N games with an optional bonus pool (Powerball, EuroMillions).

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 514 msPassing, checked 7 min ago
  • 58trust
    Birthday ProblemProbability Calculators

    Birthday problem: chance two people in a group share a birthday, chance someone shares yours, group size for 50 or 99 percent.

    x402 APICompany & people data
    $0.02per call on Polygon
    53.3% uptime, 508 msPassing, checked 9 h ago
  • 32trust
    Card OddsProbability Calculators

    Card odds: 5-card and 7-card poker hand probabilities, chance of hitting your outs by the river, blackjack natural odds.

    x402 APIOther
    $0.02per call on Polygon
    50.0% uptime, 525 msFailing, checked 25 h ago

Watch these listings in one feed

How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.