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Compute a SHA-256, SHA-384, or SHA-512 digest of UTF-8 text; returns hexadecimal output (default SHA-256).

Send email notification for payment confirmations, alerts, receipts.

Email and domain trust check. Give an email address or a domain, get one risk level (low, medium, high) with plain-language flags and the facts behind them: domain age, registrar, expiry and hold status (RDAP); MX, SPF and DMARC policy; the live TLS certificate; and for emails, syntax, disposable-provider and role-address checks. Judges the domain: does not verify that the mailbox exists and does

Audits word conflicts in public trademark indexes to verify name availability.

x402engine — Run code in isolated sandbox — Python, JavaScript, Bash, R (up to 5 min)

Live universal sky snapshot, no inputs: geocentric ecliptic longitudes for 13 bodies (Sun through Pluto, Chiron, lunar nodes) with zodiac sign/degree and 64-gate wheel placements, current moon phase and illumination, active retrogrades, and a 30-day almanac of upcoming stations and lunations. JPL-validated ephemeris. JSON. $0.01 USDC via x402, or API key.

Buy a site upload slot. Upload a zip file, then activate to extract and serve as a static site.

Cron next-run calculator — generate future times for bounded five-field POSIX cron schedules in IANA timezones with explicit daylight-saving (DST) policies.

YAML to JSON. POST a YAML document; the response is pretty-printed JSON. Anchors and aliases are resolved, and a multi-document stream converts as its FIRST document rather than as an array — the direction that bites, because YAML is the larger language.

Look up a domain: registration data from RDAP (registrar, created, expires, status, nameservers), live DNS records (A, AAAA, MX, NS, TXT, CNAME), the TLS certificate served at the name (issuer, validity, alternative names, fingerprint), and the HTTP front door (status, server, redirect). One JSON answer, no API key, no rate-limited WHOIS. GET with ?name= or POST. $0.005.

Checks one or more domains to see whether they are set up to show a brand logo next to emails in Gmail, Apple Mail, and Yahoo. It looks up the BIMI settings the domain has published, checks the logo file follows the required format, checks any logo certificate is valid and unexpired, and confirms the domain has strict enough email protection turned on. Returns a clear pass or fail per domain, plus

falcon.sol: Full document extraction (all pages) for invoices, receipts, POs, W-9s and generic PDFs. $0.03 USDC.

Send a list of domain names and this tool tells you exactly how old each one is, when it was first registered, when it expires, and how much time is left before expiration. Great for spotting brand-new suspicious domains, researching competitors, or evaluating domains before buying or linking to them. Works with over 100 domain extensions worldwide.

Give this tool a list of domain names and it will instantly check each one's DMARC email security record. DMARC is a standard that tells email providers how to handle fake or spoofed emails pretending to come from your domain. For each domain you submit, you get back whether a valid record exists, what the policy is (none, quarantine, or reject), whether reporting addresses are set up, and the ful

Upload a file and get a temporary signed URL. Send raw file body with Content-Type header. Returns a URL valid for 1 hour.

Takes one email address and tells you whether it can actually receive mail. Returns a verdict of valid, invalid, or risky, splits the address into username and domain, and flags free providers and role accounts like admin@ or support@. One address per call.

Transform JSON records or CSV uploads with typed schemas and Polars SQL. Filter, aggregate, join and reshape data. Pricing depends on input size and SQL statement count; the 402 response contains the exact USDC amount.

IP geolocation, ASN and reputation lookup: VPN/Tor proxy, hosting and botnet C2 flags with an abuse score, for any IPv4 or IPv6 address.

Domain & DNS intelligence — records, SSL certs, subdomain discovery.

All common DNS records for a domain via Cloudflare DNS-over-HTTPS: A, AAAA, NS, MX, TXT, CAA.