Live Hacker News data from the official Firebase API: top, new and best story lists with scores and comment counts, or the full detail of any item id. Fresh from the s…
Listing info 80/100
List the next N executions of a cron expression with exact timestamps — from now or from any reference datetime. Complements cron-describe (which explains what an expr…
Listing info 80/100
Full on-chain due-diligence report for any NFT collection: mint supply, unique holders, top-10 ownership concentration with a verdict, wash-trading indicators from tra…
Listing info 80/100
Validate a JSON document against a JSON Schema (draft 2020-12) with precise error paths — the exact check agents need before trusting structured output. Returns valid/…
Listing info 80/100
Validate an EVM address: syntactic checks plus the EIP-55 checksum test (keccak-256 mixed-case). Returns the canonical checksummed form, flags addresses pasted with a …
Listing info 80/100
Calculate the fixed monthly payment for a loan from its principal, annual interest rate and term in years, plus total repaid and total interest (annuity formula). Use …
Listing info 80/100
Live cryptocurrency prices from CoinGecko's public API: current price in USD/EUR/GBP/JPY plus 24-hour change for any coin by id or common ticker (btc, eth, sol…). Cach…
Listing info 80/100
Where the sun is in the sky right now — or at any timestamp — for any coordinates: azimuth (compass bearing), elevation angle, cardinal direction, right ascension and …
Listing info 80/100
Extract EXIF metadata from a JPEG: camera make/model, lens, exposure settings, timestamps, orientation and GPS coordinates as decimal lat/lon. The OSINT-standard check…
Listing info 80/100
Convert a place name into coordinates and location metadata via Open-Meteo's geocoding API: latitude, longitude, country, administrative region, timezone and populatio…
Listing info 80/100
Convert CSV to JSON (array of objects keyed by the header row) and JSON arrays back to CSV. Handles quoted fields with embedded delimiters, escaped quotes and multi-li…
Listing info 80/100
Convert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with clear errors. Use this when…
Listing info 80/100
Indexed listings, not certifications. Prices and protocols are publisher declarations. How the index works