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All tornado warnings and tornado watches currently in effect anywhere in the United States, with the specific counties/zones affected, severity, urgency, and the full official US government alert feed alert text. For emergency-notification agents, logistics rerouting, and outdoor-event safety logic. Legitimately empty when no tornado activity is occurring.

The latest official total US federal debt outstanding, down to the penny, broken into debt held by the public versus intragovernmental holdings, with the record date it was reported. Updated each business day. Used for macro dashboards, fiscal-policy content, and economics agents that need an authoritative current figure. Cached 6 hours.

Current total outstanding US government debt with a same-day-accurate figure, split between publicly held and intragovernmental debt, plus the official reporting date. For finance dashboards, economic research, and news-generation agents that need a citable number without scraping a government portal. Refreshed every 6 hours.

Solid geometry calculator returning exact volume and surface area for spheres, cylinders, cones, cubes, and rectangular prisms from structured dimension inputs. Built for packaging design, tank and container sizing, construction estimates, and STEM education tools that need a checked number rather than a mental estimate.

Geometry calculator API: area, perimeter, volume, and surface area for circles, rectangles, triangles, spheres, cylinders, cones, cubes, and prisms — from dimensions. Exact.

Least-squares linear fit calculator: pass paired numeric data and get back the best-fit line equation, slope, intercept, and goodness-of-fit score. For analytics dashboards, A/B result interpretation, and any pipeline that needs a quick, exact regression without spinning up a stats library.

Today's (or any past day's) featured astronomy picture — title, plain-language explanation, media type (image or video), and full-resolution URL — as structured JSON. Pass an optional date (YYYY-MM-DD) to fetch a specific day's picture back to mid-1995. For daily-digest bots, content-scheduling agents, and space-education tools.

Fits a straight trend line through a set of x/y data pairs and returns slope, y-intercept, and R-squared fit quality. Useful for spotting growth trends, forecasting next values from historical data, and validating whether a relationship is actually linear before an agent bases a decision on it. Computed exactly, with no sampling error.

Return-on-investment and compound-growth calculator: supply an initial amount, rate, and time horizon to get final value, total interest earned, and effective annual yield. For comparing savings accounts, investment scenarios, and loan offers where exact compounding matters more than an estimate. Results are reproducible and auditable call to call.

Loan payment calculator covering compound interest growth, monthly installment amounts, and return-on-investment math from plain numeric inputs — principal, rate, term, contribution. Useful for budgeting tools, debt payoff planning, and comparing financing offers side by side. Deterministic results an agent can cite without re-running the math itself.

Cooking measurement API: convert between cups, tbsp, tsp, ml, l, fl-oz, grams, kg, oz, lb — including volume↔weight using typical densities for 40+ ingredients (flour, sugar, butter, honey, rice...). A cup of flour is 120g but a cup of honey is 340g. For recipe scaling and grocery agents. Density results labeled approximate.

JSON to CSV converter API: turn an array of JSON objects (up to 10,000 rows) into a properly escaped CSV with a unified header row — nested values JSON-encoded, quotes handled correctly. For report generation, spreadsheet handoffs, and data-export agents. Processed in memory, nothing stored.

The daily featured astronomy image or video, with title, explanation text, media type, and image URL, as normalized JSON. Optional date param for any day back to mid-1995. For content agents, daily-digest bots, and space-education tools.

Turns structured JSON arrays into spreadsheet-ready CSV, up to 10,000 rows, headers unified across objects, nested fields JSON-encoded inline, quotes escaped correctly. Useful for report generation, data exports, and any pipeline bridging an API response to a file a human opens in Excel or Sheets.

GPU compute spot prices — best deals across Vast.ai, RunPod, AWS, Lambda + market signal + AI brief

Where JPYC (Japan's yen-pegged stablecoin) is accepted: curated exchanges, DEXes, dApps and bridges as JSON, each with category, supported assets and an official URL.

Fetch recall(s) by native recall number (CPSC recall number, FDA recall number e.g. F-1234-2026, NHTSA campaign number e.g. 26V329000).

Cron parser API: validate a cron expression and get its next 1-20 run times as ISO timestamps in any timezone. Instantly answers 'when will this fire?' for scheduler-building, automation, and DevOps agents. Invalid expressions return a clear unpaid 400.

Cooking conversion API: cups↔grams↔tablespoons↔ml with ingredient-aware densities for 40+ ingredients (a cup of flour is 120g, a cup of honey is 340g). The kitchen math LLMs get wrong.

Chemical element reference: look up any of the 118 known elements by atomic number, symbol, or name and get atomic mass, electron configuration, electronegativity, melting/boiling points, density, and phase at room temperature. For chemistry homework, materials science, and lab-prep agents needing a quick, sourced fact check.

Parses any standard cron expression and computes its next 1-20 firing times in a chosen timezone, flagging malformed expressions clearly rather than letting a bad schedule silently fail in production. For scheduler tooling, CI pipelines, and agents that generate cron syntax and need to sanity-check it.

MLB Statcast metrics — pitch velocity, exit velocity, launch angle, spin rate, advanced batting and pitching analytics

Hourly near-surface air temperature in Celsius (°C) | ERROR: Unable to calculate price.

Astronomy picture of the day API: one featured space image or video per day — title, plain-language explanation, media type, and full-resolution URL — as structured JSON. Defaults to today's picture; pass an optional date (YYYY-MM-DD) for any day back to mid-1995. Use for daily-digest bots, content-scheduling agents, and space-education or novelty feeds. Cached 1 hour.