Developer Tool

Current temperature and wind for a city from Open-Meteo (live forecast data)

Deterministic phonetic rhyme (perfect + scored slant), pronunciation, syllables, scansion, homophones — from CMUdict. Free sample, no payment required: GET /play/prosody

Deterministic syntax validation — does this JSON/YAML/TOML/Python/regex parse? Valid/invalid + error location from the canonical parser. For long source use POST. Free s…

Deterministic HS-code triage: ranked candidate headings with official heading text, GRI note and broker disclaimer. Not a customs ruling.

MSVI volatility index history — 63 days, per-row original signatures. RV, IV, term structure, funding, PCR components. — Ed25519 signed attestation

Real-time sea state at GPS coordinates — wave height, period and conditions for maritime routing — Ed25519 signed attestation

Get current weather and 7-day forecast for any location. Uses Open-Meteo API. Search by city name or coordinates.

Draft a professional email. Specify context, intent (cold outreach/follow-up/apology/etc), and tone. Returns subject line options, body, and key phrases.

Get current weather and 7-day forecast for any location. Uses Open-Meteo API. Search by city name or coordinates.

Convert an amount between currencies using ECB exchange rates. Supports all major currencies. Returns converted amount and rate.

NBA game schedule for any date — matchups, scores by quarter, teams, and game status.

Official ECB foreign exchange reference rates for about 30 currencies, today or on any past date since 1999, from any base, with amount conversion Official ECB foreign e…

Resolve a single code point (given as 'char' or 'codepoint') to its name, general category, block, script and plane. Provide exactly one of the two inputs.

Present value of a future sum and/or a level annuity, given a per-period rate and number of periods. Set dueAtBeginning=true for an annuity-due.

Grow a principal by simple or compound interest over a number of years. Compound interest uses compoundsPerYear compounding periods (default 12, monthly).

Embeds up to 32 texts on the local Ollama runtime. Returns explicit model and dimensions; no paid third-party API is called.

Für Zahlungsziele, Fristen und Liefertermine. Die Antwort nennt das Ergebnisdatum, die Zahl der Kalendertage und jeden übersprungenen Tag mit Grund.

Extract the heading outline from Markdown — depth, text and a unique GitHub-style anchor slug for each heading. Optionally limit to a maximum heading depth.

Solve the linear system A·x = b for a square coefficient matrix A and vector b via Gaussian elimination with partial pivoting. A non-square A or a b of the wrong length…

Diameter, circumference and area of a circle from its radius.

Student's t distribution with df degrees of freedom (> 0). `function` selects the density (pdf), cumulative distribution (cdf) or quantile / inverse-CDF.

Foresight API insights

Use to check one US statute citation before relying on it. Returns whether the section exists, is in force or repealed, its heading, full text and official source link.…

Historical fiat exchange rates for a given date (YYYY-MM-DD, back to 1999-01-04) and base currency; optionally restrict to specific targets.