Explore APIs

Base mainnet gas price via public RPC (keyless). eth_gasPrice (+ optional latest block). Data only — not advice.

Batch convert free-text quantities (SI/imperial). Factors from NIST SP 811 / CODATA where cited.

Convert strings between camel/snake/kebab/Pascal/CONSTANT/Title (batch ≤50). Offline native.

Check whether email addresses are real and safe to send to. Verifies up to 25 addresses per call: syntax, domain MX/A record (including null-MX), disposable-domain, role-account, free-provider and typo checks. Does not perform SMTP/mailbox verification.

One DNS Doctor bulk scan of 2-50 domains in a single call, priced per domain.

cron402: create a cron job that calls your webhook on a schedule. $0.008 includes 1 run credit; each subsequent run costs 1 credit (top up at /v1/crons/topup/{pack}).

Is Stripe or another SaaS or cloud vendor down right now? Input: ?vendor=stripe (slug, name or domain). Returns status, confidence, active incidents with a summary, official status page, last-checked time and a staleness flag, read live from 60SecMonitor. $0.01 USDC on Base. Untracked vendors return 404 and aren't charged. Up to 25 vendors at once: /v1/status/batch ($0.05). Past incidents: /v1/inc

HookPulse: one uptime check of a URL (status, response time, keyword, TLS certificate), paid per call

CommsHarbor: email security audit of a domain (SPF, DKIM, DMARC, MX and a score), paid per call

Twilio SMS and messaging send preflight. Validate a Twilio Messages.create payload before sending SMS/MMS or other supported messages. Returns static failures, warnings, and unknowns without sending the message.

Reduce a fraction to lowest terms and describe it: numerator/denominator (denominator normalized positive), sign, whether it is an integer, and a mixed-number form when improper. A zero denominator is a clean 400.

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

Domain RDAP via IANA DNS bootstrap. Registrar/NS/status/events. SSRF-safe.

Exact decimal/rational math with optional units + step trace. AST-sandboxed (no eval).

Deterministic PII redaction: emails, phones, SSN-shaped, Luhn cards, IPv4 → typed placeholders. No network. Amp port.

Epoch s/ms/us/ns or ISO-8601 ↔ epoch_s/ms + ISO UTC + any IANA tz. Offline. Amp port.

Email deliverability (MX/SPF/DMARC via DoH). No SMTP mailbox probe. No charge on empty/failed.

DNS via Cloudflare/Google DoH: A/AAAA/MX/TXT/NS/CAA + optional SPF/DMARC parse. No mailbox probing.

Relative date parse, ISO 8601 duration math, IANA timezone convert with DST flags. Offline tzdata.

Next 1-20 run times for a 5-field cron expression (IANA tz, DST-aware). Offline. Amp port.

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

Serialize a JSON value into a compact MessagePack or CBOR byte stream, returned as a base64 (default), base64url or hex string, along with the byte length.

Least common multiple of two or more positive integers (arbitrary precision).

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

Red-flag review of a long deal document (SHA, SPA with schedules, full term sheet pack). Pro tier: up to 100 PDF pages / 5 MB / 400k characters, longer output. Long jobs return a free poll URL. Documents are not stored.

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

Complete list of all Bitcoin Core RPC methods (summaries). One call replaces up to 142 individual lookups. Returns name, category, summary, and parameter count for every method.

Fast, cheap spam-risk gate for one email: pass/warn/fail, a 0-100 score, and up to 3 flagged phrases. Use for a go/no-go before sending or for bulk screening of many drafts. No rewrites. For a full audit with reasons, subject-line risk, and rewritten copy, use analyze-email-deliverability. Content signals only; no inbox-placement guarantee.

Resolve ONE DNS record type for a domain -- the cheapest, narrowest domain-check endpoint. For all record types at once, use /domain/intelligence. For a bundled DNS+TLS+headers audit, use /web/audit (raw) or /security/posture (scored). For mail-security plus a scored verdict, use /domain/due-diligence.