The directory of tools for agents

Convert numbers to Roman numerals (1–3999) and Roman numerals back to numbers, with strict validation that rejects non-standard forms like III…

Convert speed units: kilometers per hour, miles per hour, meters per second, knots and feet per second with exact definitions. Use this when a…

Validate JSON with precise error messages, pretty-print it with any indent, and inspect its top-level type and element counts. Use this when a…

Compute impermanent loss for a 50/50 constant-product AMM position at any relative price move, with a reference table of common moves. Determi…

Live weather from Open-Meteo: current temperature, humidity, wind and conditions plus a 3-day forecast, by city name or coordinates. No API ke…

Repairs broken JSON: trailing commas, single quotes, unquoted keys, Python literals (True/False/None), NaN, comments, smart quotes and truncat…

Compute readability metrics for a block of text: Flesch Reading Ease score, Flesch-Kincaid grade level, and word/sentence/syllable statistics.…

Fetch a PDF (by URL, SSRF-guarded) or accept it as base64 and extract all readable text with page count. Deterministic parsing — no language m…

Recent earthquakes from USGS: filter by region (city or coordinates + radius), minimum magnitude and look-back window. Returns count, the larg…

Percent-encode text for safe inclusion in URLs and query strings, or decode percent-encoded text back. Uses the standard encodeURIComponent ru…

Compare any two NFT collections on the full due-diligence metric set: supply, holders, holder ratio, top-10 concentration, wash-trading score …

Convert ISO 8601 durations (P1DT2H30M) to total seconds and back — including weeks — with a component breakdown. The unambiguous duration math…