Developer tools

Bulk URL status check: up to 20 URLs in one $0.01 call. For each: up or down, HTTP status, latency, redirect count and final URL, with up/down totals. Dead-link checking and multi-site monitoring at a twentieth of the per-URL price.

IP WHOIS via RDAP: the registered netblock for an address with its name, handle, allocation type, country, start and end addresses and the owning organization, from the authoritative regional registry. Ownership research and abuse contacts. $0.01 per IP.

Check whether an IPv4 address belongs to a CIDR block. Give '<ip> in <cidr>' (or comma separated). Firewall rule validation, allowlist checks and log filtering. $0.01 per check.

Hostname to IPs with hosting attribution: all IPv4 and IPv6 addresses for a hostname, and for each IPv4 the ASN, network owner, country and detected cloud/hosting provider. Where is this site hosted, in one call. $0.01 per hostname.

Bulk WHOIS/RDAP lookup: up to 10 domains in one $0.01 call, each with registrar, registration date, expiry date, nameservers and domain age in days. Batch due diligence and expiry monitoring at a tenth of the per-domain price.

DNS propagation check: resolves a domain's A and MX records through three independent public resolvers (Cloudflare 1.1.1.1, Google 8.8.8.8, Quad9) and reports whether all agree. Verify a DNS change has propagated after a migration or record update. $0.01 per domain.

DNS TTL audit: the cache time-to-live for A, AAAA, MX, NS and TXT records with plain-English notes on which are too high for a safe migration and which are unusually low. Plan DNS cutovers with confidence. $0.01 per domain.

TLD information: the registry's RDAP server from the IANA bootstrap file, whether the TLD zone is DNSSEC-signed, and its nameserver count. Understand any domain extension before registering or investigating. $0.01 per TLD.

Typosquat finder: generates the most likely typo, transposition, omission, doubled-letter, homoglyph and TLD-swap variants of a domain (up to 40) and checks which ones currently resolve. Brand protection and phishing-domain monitoring. $0.01 per domain.

Wildcard DNS check: resolves a random non-existent subdomain to see whether the zone answers everything (wildcard record), which affects subdomain enumeration, email catch-all behaviour and phishing risk. $0.01 per domain.

DNS change detection: snapshots a domain's A, AAAA, MX, NS, TXT and CAA records, compares with the snapshot from your previous call (kept 90 days) and reports which record types changed. Call it on a schedule to get DNS hijack and misconfiguration alerts. $0.01 per check.

Cloud / hosting provider detection for an IP or hostname: AWS, Google Cloud, Azure, Cloudflare, DigitalOcean, Hetzner, OVH, Akamai/Linode, Fastly, Oracle, Alibaba, Vultr, Fly.io, Render and others, from the announcing ASN, plus a CDN flag. Where is this service hosted? $0.01 per lookup.

ASN lookup: the name, country, regional registry and allocation date of an autonomous system (Team Cymru), plus the RDAP record with the owning organization. Identify who operates a network number seen in logs or BGP data. $0.01 per ASN.

IP address validator: tells you whether a string is a valid IPv4 or IPv6 address, which version, the normalized form and its classification (public, private, loopback, link-local, multicast...). Input validation for forms, logs and APIs. $0.01 per check.

URL uptime history: checks the URL now and keeps the last 50 checks (status, latency, up/down) per URL across your calls, returning uptime percentage and average latency over the stored window. A tiny status log you build by calling on a schedule. $0.01 per check.

Page text diff against your previous call: line-level added and removed text (up to 100 lines each), similarity ratio and word delta, with the baseline stored for 90 days. See exactly what changed on a page, not just that it changed. $0.01 per check.

Content statistics for a page: words, characters, sentences, paragraphs, headings, links, images, code blocks, average sentence and paragraph length, lexical diversity and the longest paragraph. Quantify a page before you read it. $0.01 per page.

Page change detection: hashes the readable text of a page and compares with the version from your previous call (kept 90 days). Reports whether it changed, how much (word delta and similarity), and a sample of added/removed lines. Watch competitor pages, docs or listings. $0.01 per check.

Country calling code: the international dial prefix for a country by name or ISO code, with the ISO codes and an example E.164 format. Phone formatting and validation helper. $0.01 per lookup.

UUID generator: random v4 UUIDs or time-ordered v7 UUIDs (sortable, great for database keys), up to 100 per call, plus a ULID-style timestamp note for v7. $0.01 per batch.

Code block extraction from a page: every <pre>/<code> block with its language hint (from class names or fences), line count and text, plus the counts by language. Mine documentation for examples. $0.01 per page.

npm download counts for a package: last day, week and month totals plus a 30-day daily series, from the public npm downloads API. Popularity and trend signals for dependency decisions. $0.01 per package.

Certificate issuance history from certificate-transparency logs: every certificate ever logged for the domain (up to 200), grouped by issuer with first/last issuance dates, current-valid count, and the most recent 20 entries (issuer, common name, not-before/not-after). Spot rogue issuers, renewal cadence and CA changes. $0.01 per domain.

GitHub repository info: description, stars, forks, open issues, primary language, license, default branch, topics, created/updated/pushed dates, archived flag and homepage, from the public GitHub API (no token; rate-limited). $0.01 per repo.

Postal / ZIP code format check: the expected pattern and an example for 30 countries, and whether a given code matches it. Address validation without an address API. $0.01 per check.

Title and description change detection: records a page's title and meta description on each call and tells you when either changes compared with your previous call (kept 90 days). Catch rebrands, hijacks and SEO edits. $0.01 per check.

HTTP/3 and modern-transport support: checks the DNS HTTPS record (alpn, ech, ipv4hint), the Alt-Svc response header for h3, and reports whether HTTP/3 (QUIC), HTTP/2 and Encrypted Client Hello are advertised. Useful for protocol-compatibility and performance audits. $0.01 per domain.

Maintenance-risk hints for an npm package: is the latest version deprecated (with the message), days since the last publish, whether any direct dependency's latest is deprecated, single-maintainer flag, and a simple risk label (healthy / stale / deprecated). Not a CVE scanner; a fast triage before install. $0.01 per package.

Domain registration expiry: days until the domain expires, the expiry/registration/last-updated dates, registrar and EPP status codes (clientTransferProhibited, pendingDelete, redemptionPeriod...) from RDAP. Flag renewals due within 30 days and domains in grace/redemption. $0.01 per domain.

README of a GitHub repository as plain text (markdown kept, up to 20k chars): tries the default branch and common README filenames, reports which file and branch matched, length, headings list, and the raw URL. Fast repo comprehension for coding agents. $0.01 per repo.