Check whether a domain name is registered or available, via the official RDAP registry protocol (404 = available). For registered domains it also returns the registrar…
Listing info 80/100
One-call on-chain profile of any Ethereum or Base wallet via Blockscout: native balance, transaction and transfer counts, activity recency, top token holdings, and mos…
Listing info 80/100
Compute exact hash digests of UTF-8 text using Web Crypto (SHA family) and a verified pure-JS MD5 for legacy checksums. Deterministic — identical input always yields t…
Listing info 80/100
Add VAT to a net amount or remove VAT from a gross amount. Standard VAT rates for 36 countries are built in, or override with any custom rate. Use this when an agent n…
Listing info 80/100
Reference database of all 250 countries and territories: ISO 3166-1 codes, capitals, regions, population, area, currencies, languages, TLDs and calling codes. Look up …
Listing info 80/100
Top holders of any NFT collection with exact quantities, individual and cumulative ownership percentages, and concentration statistics — the distribution picture agent…
Listing info 80/100
Calculate return on investment: profit (or loss) and the percentage return relative to the initial amount invested. Use this when an agent needs to return on investmen…
Listing info 80/100
Calculate gross profit, profit margin (profit as % of price) and markup (profit as % of cost) from a unit cost and selling price — the two numbers people constantly mi…
Listing info 80/100
Generate cryptographically random UUIDv4s or time-sortable UUIDv7s from a real CSPRNG, and validate any UUID's format, version and variant bits. Use this when an agent…
Listing info 80/100
Calculate Body Mass Index from weight (kg) and height (cm), with the WHO weight category and the healthy BMI weight range for your height. Use this when an agent needs…
Listing info 80/100
Test a regular expression against text and see every match: the matched substring, its index, and all capture groups. Deterministic — the same pattern and text always …
Listing info 80/100
Query live DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) through Cloudflare's DNS-over-HTTPS resolver. Domain validation, email deliverability pre-checks and infrastr…
Listing info 80/100
Indexed listings, not certifications. Prices and protocols are publisher declarations. How the index works