30 Services from keyronne.com

Calculates point-to-point directions for 2–10 stops by car, bike, or foot, returning total and per-leg distance, travel time, and encoded polyline geometry using OpenStreetMap data.

Repairs malformed JSON text (from LLM output or other sources) into valid parsed JSON, returning the corrected value plus a log of all repairs applied.

Deterministically evaluates arithmetic expressions, converts between 80+ units, and computes descriptive statistics over large datasets

Validates a JSON value against a JSON Schema and automatically coerces common LLM output mistakes (numbers as strings, stringified booleans, missing defaults, extra properties) before returning a corrected value and structured error report.

Generates cryptographic secrets using CSPRNG randomness: random bytes, passwords, pronounceable strings, UUIDs, prefixed API keys, TOTP seeds, and asymmetric keypairs (Ed25519, P-256, RSA-2048) in PEM/JWK format

Converts ISO or Unix timestamps across IANA timezones, adds/subtracts durations, and diffs two instants with humanized output — or returns current time if no datetime is supplied.

Parses any CSS color format (hex, rgb, hsl), converts between all three, computes relative luminance, checks WCAG AA/AAA contrast ratios against a background, and supports lighten, darken, and color mixing.

Look up an EVM transaction and its receipt by hash on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain, returning status, addresses, value, block, gas, and more.

Returns current conditions plus hourly and daily forecasts for any location on Earth, given a city name or lat/lon coordinates, using MET Norway data.

Validates IBAN structure and ISO 7064 mod-97 checksum, returning country, check digits, and BBAN for single or batch (up to 50) IBANs

Splits long text into retrieval-ready chunks along paragraphs, sentences, markdown sections, or fixed character boundaries, returning character offsets and approximate token counts per chunk.

Fetches a web page by URL or converts raw HTML into clean, LLM-ready Markdown with structured metadata (title, description, OG tags, canonical URL, language)

Returns current gas price and EIP-1559 fee suggestions (base fee, priority tip, max fee) in gwei for Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain

Forward and reverse geocoding using OpenStreetMap data — converts place names or addresses to coordinates, or lat/lon to nearest address, with up to 10 ranked results.

Look up book metadata by ISBN (10 or 13 digit), returning title, authors, publishers, publish date, page count, subjects, and cover image from Open Library

Validates payment card numbers via Luhn checksum and detects the card network (Visa, Mastercard, Amex, Discover, etc.) with per-network length rules, returning network name, Luhn result, and last four digits.

Fetches current USD prices for up to 25 crypto assets per call, supporting major tickers, CoinGecko IDs, and chain+contract addresses for long-tail tokens, with per-asset confidence scores and timestamps.

Converts CSV text to JSON rows or JSON rows back to CSV, with RFC 4180 parsing, automatic delimiter detection, and type coercion.

Resolves DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV, PTR, DS, DNSKEY, HTTPS) for a domain, returning parsed answers with TTLs and response status.

Validates email addresses with RFC syntax checks, MX/DNS lookups, disposable-domain detection, role-address detection, free-provider flagging, and typo suggestions — single or batch up to 50.

Encodes and decodes text across base64, base64url, hex, URL-encoding, and HTML entities (UTF-8 safe), and decodes JWTs into readable header/payload with human-readable timestamps.

Fetches ERC-20 token metadata (name, symbol, decimals, total supply) and optionally a wallet's token balance for any token contract across Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain

Fetches native coin and ERC-20 token balances for any wallet address on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain

Fetch block header details (timestamp, miner, gas used/limit, base fee, tx count, size) by block number, hash, or 'latest' on major EVM chains

Computes cryptographic digests (MD5, SHA-1, SHA-256, SHA-384, SHA-512) and HMACs over input text, returning results as hex, base64, or base64url.

Inspect IPv4/IPv6 addresses (version, classification, integer form) and perform CIDR subnet math (network, netmask, broadcast, host range) or test address containment, all deterministically with no external lookups.

Validates and parses phone numbers in E.164 format, extracting country calling code, region, national number, and canonical E.164 string — single or batch up to 50

Compares two texts using Myers diff algorithm over lines, words, or characters, returning structured edit operations, unified diff output, and similarity statistics.

Computes pairwise character n-gram cosine similarity across a batch of 2–300 texts, returning similar pairs above a threshold, connected-component clusters, and a full similarity matrix.

Search Wikipedia across 300+ language editions for ranked results or fetch a single article's summary, description, and thumbnail via the official MediaWiki API.