Simulators online tools — same implementation for humans and agents · 5 tools
root:simulator·Human page + Agent API · same engine
Shift a date by N business days or count the business days between two dates — signed backward shifts, custom weekend definitions, your own holiday list, makeup workdays, and the exact rule set reported with every answer
forge-business-day-rules
Parse cron and list next run times
cron-parser
Roll NdM dice (crypto RNG)
crypto.randomInt
Fixed-payment loan schedule: per-period interest, principal and balance, total interest, early payoff with extra payments, and the crossover period where principal first exceeds interest
annuity-amortization
Expand a retry policy (exponential / linear / fixed, factor, cap, jitter, attempt budget) into a per-attempt delay and cumulative wait schedule — jitter as a min/expected/max range instead of one sampled draw, plus a verdict on whether the cumulative wait overruns your own timeout
forge-retry-backoff-schedule
