Productivity & SaaS

Feiertagsliste je Bundesland für DE, AT und CH, Werktagsprüfung, Werktage zwischen zwei Daten, Werktage addieren und Zeitzonen-Offset inklusive Sommerzeit.

Brazil's tax transition calendar, year by year from 2026 to 2033: which taxes are in force each year, at what rate, and when PIS/COFINS, IPI, ICMS and ISS are extinguished. The context an agent needs to know whether the tax rule it used is still valid on the date of the transaction. Free sample, no payment: https://api.brazilayer.com/v1/tributos/amostra

Interpolates a caller-supplied start and end temperature across a bounded number of steps using either a linear or geometric rule. It does not run an annealer, optimize a problem Hamiltonian or tune a schedule from hardware measurements.

Discover machine-readable integration documentation from a public developer/docs page: llms.txt, Markdown alternates, API/auth docs, OpenAPI or Swagger specifications, and MCP candidates. Candidates are returned only after bounded verification. Maximum 10 HTTP requests; no JavaScript, recursive crawl or authenticated content. Base mainnet USDC

The full FOMC meeting schedule (2025–2027) with the last and next meeting and days-until. Each entry carries the two-day meeting's start and decision date, year, and past/upcoming status. No ticker needed — the rate-decision calendar every macro-aware agent plans around. Source: U.S. Federal Reserve. From x402stock, a market & economic data API (x402, USDC).

Upcoming US economic data releases — WHEN the market-moving prints land, not just their latest values. Returns curated high-importance releases (CPI, PPI, PCE, jobs, JOLTS, GDP, retail sales, housing starts, industrial production) within `?days=` (default 30, max 90), each with date and category, plus the next FOMC meeting. `?past=true` includes the last week. Release dates from FRED.

Holiday-aware business-day calculator for 200+ countries. Three modes: pass start + addDays (signed integer) to shift a date by N business days; pass start + end to count business days between two dates (exclusive of start, inclusive of end); pass start alone to check one date (is it a business day, which holiday, next/previous business day). Query: country (ISO 3166-1 alpha-2), start (YYYY-MM-DD), optional region (subdivision code), addDays XOR end, optional weekend (comma-separated days, default sat,sun — e.g. fri,sat for the Gulf), optional types (holiday types treated as closures, default public,bank). Skipped holidays are itemized in the response. Use for payment terms, SLA deadlines, and delivery-date math.

Propagates two caller-supplied Cartesian states with constant velocity, analytically finds the clamped time of closest approach, and compares miss distance with combined hard-body radius. It ignores gravity, covariance, maneuver uncertainty, tracking error, and nonlinear dynamics and is not an operational conjunction assessment.

Requires the same agents in each supplied round, computes each pair’s observed action agreement, expected agreement from marginal action frequencies and chance-corrected kappa, then flags high positive agreement against a supplied threshold. Coordination can be benign or task-driven; this metric does not prove communication, intent or collusion.

Uses da/dt = -rho×sqrt(mu×a)/ballistic_coefficient for a circular orbit, holds density and ballistic coefficient constant, and linearly projects altitude over a bounded horizon. Real density changes rapidly with altitude and solar activity; the result is not a lifetime prediction or maneuver plan.

Applies a transparent heuristic: cycle fade scales with equivalent full cycles and depth-of-discharge exponent; calendar fade scales with square-root time and a temperature factor. Coefficients are caller supplied or declared defaults. This is not cell-chemistry validation, warranty advice or a safety prognosis.

Builds the cohort table from the events you pass: users grouped by the period of their first event, counted again in each following period. Returns the table per cohort, a retention curve across all cohorts, and, where events carry a value, cumulative value and value per user. The curve counts only cohorts old enough for a given period, so a young cohort is not scored as churn. Day, week and month are real calendar periods. Nothing is fetched, nothing is stored.

Multi-timeframe analysis — all 4 timeframes (15m, 1h, 4h, 1d) with confluence score and AI summary

Turn event fields into a valid RFC 5545 .ics calendar file — handles timed and all-day events, escaping, line folding, and a deterministic UID for idempotent re-import — so agents can publish events that import cleanly into Google, Apple, and Outlook calendars. Add ?download=1 (or Accept: text/calendar) to receive the raw .ics file with a Content-Disposition attachment header instead of the JSON envelope. Pure compute, no LLM.

Look up public holidays for any country and year, check whether a specific date is a holiday, and calculate the next business day — so agents can handle scheduling, SLA calculations, deadline setting, and date-aware workflows without hardcoding country-specific holiday rules.

Public and bank holidays for 200+ countries and their regions (states, cantons) for any year, with local names. Optionally check whether a given date is a holiday. Params: country (ISO 3166-1 alpha-2, required, e.g. DE, US, CH, JP), region (e.g. BY, CA, ZH), year (default current), date (YYYY-MM-DD to check), language (e.g. en), include_observances (default false).

FOMC, CPI, NFP and PCE calendar for traders: the next Fed rate decisions and the CPI, nonfarm payrolls and PCE release dates with UTC times converted from New York time (DST-aware), each with its official Fed, BLS or BEA source URL and the time we verified it. Use when you need to answer: When are the next FOMC decision and CPI, NFP and PCE releases? Read daily from the agencies' own pages and…

Turn a small website, or one section of it, into clean Markdown: starts from your URL, finds pages from the sitemap or by following links on the same site, obeys robots.txt, and returns up to 10 pages (title, Markdown, address) in one call. Great for docs, blogs and company sites. ?url=https://example.com/docs/&maxPages=10&path=/docs/

Add or subtract N Japanese business days from a date (e.g. settlement date T+2, delivery ETA). Skips weekends and national holidays; optional bank calendar.

Up-to-date docs for any npm, PyPI, crates or Go library: finds the project's own llms.txt and docs pages (or the latest release's README), keeps only the sections relevant to topic within a tokens budget, and returns them with sources and the current version. library is the package name; ecosystem defaults to npm. ?library=hono&topic=middleware&tokens=3000

Official UK bank holidays (England & Wales, Scotland, Northern Ireland) from GOV.UK. Is a date a working day, the next holidays, working days between two dates, or the date N working days after a date (deadlines, SLAs, delivery estimates).

Nth percentile of a list of numbers (linear interpolation between closest ranks).

Ordinary least squares simple linear regression (y = slope*x + intercept) with R-squared.

Upcoming science and technology event resolutions — Upcoming science and technology market resolutions in date order with current blended probabilities — the forward calendar of science and technology events an agent can position around. Same shape as /v1/calendar, pre-filtered to science and technology markets.

Upcoming fixtures and the game schedule for a major sports league, normalized to one cited JSON. Give a league such as mlb, nhl, nfl, nba or epl and an optional date, and get each scheduled game with both teams, start time and venue. A cheap way for an agent to plan around the sports calendar.

Public holidays for a country and year via Nager.Date (keyless, 100+ countries): date, local name, English name, nationwide flag, and holiday types. Pairs with /api/business-days and /api/country-info.

Get the day number within the year (1-366) for any date, plus days remaining, leap-year status, percent of year complete, and a simple (Sunday-start) week number.

Compute the date of Easter Sunday for a given year using the Anonymous Gregorian algorithm (Meeus/Jones/Butcher). Also returns Good Friday, Ash Wednesday, Palm Sunday, Pentecost, and the day-of-year for Easter.

Get the ISO 8601 week number, ISO day-of-week, quarter, and day-of-year for any date. Useful for fiscal/reporting calendars, weekly aggregations, and sprint planning.

Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule.