Discover / probability-calc.x402tookit.com

Probability Calculators

■ Challenge detected

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

Listed price
$0.02
Challenge detected
1 of the last check
Median response
440 ms
Last checked
21 Oct, 00:26 UTC
In our index since
21 Oct 2026

Endpoint

curl -i https://probability-calc.x402tookit.com/bayes
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
10 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://probability-calc.x402tookit.com

  • GET/distribution-tableNo price listedExact pmf, cumulative and tail tables for geometric, negative binomial, hypergeometric, binomial and Poisson.
  • GET/expected-valueNo price listedExpected value, variance, standard deviation and chance of profit for a list of payoffs with probabilities or weights.
  • GET/card-oddsNo price listedCard odds: 5-card and 7-card poker hand probabilities, chance of hitting your outs by the river, blackjack natural odds.
  • GET/multinomialNo price listedMultinomial coefficient (arrangements of repeated items like MISSISSIPPI) and multinomial probability for given odds.
  • GET/birthday-problemNo price listedBirthday problem: chance two people in a group share a birthday, chance someone shares yours, group size for 50 or 99 percent.
  • GET/streak-oddsNo price listedChance of a run: r successes in a row (or r identical outcomes) somewhere in n independent trials, like coin flips.
  • GET/gamblers-ruinNo price listedGambler's ruin: probability of going broke before hitting a target, and expected number of bets, for repeated unit bets.
  • GET/lottery-oddsNo price listedLottery odds: jackpot odds and every match tier for pick-k-of-N games with an optional bonus pool (Powerball, EuroMillions).
  • GET/dice-oddsNo price listedExact odds for dice pools: sum distribution, chance of reaching a target, mean and variance; supports drop-lowest like 4d6.
  • GET/bayesNo price listedBayes' theorem: posterior probability from a prior, sensitivity and false-positive rate, with natural frequencies and odds form.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 10 of 10 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/probability-calc.x402tookit.com

Recent checks

21 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.21 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
21 Oct, 00:26 UTCChallenge detected402440ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 21 Oct, 00:26 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Probability Calculators?

Its listed price is $0.02.

What payment terms does Probability Calculators advertise?

The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Probability Calculators listed?

In x402 Bazaar. Superstables first indexed it on 21 Oct 2026.

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