deliverability x402 REST
Email deliverability check: SPF, DKIM, DMARC and MX record audit for a sending domain
1,097 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Email deliverability check: SPF, DKIM, DMARC and MX record audit for a sending domain
Cold email grader: score an email 0-100 with concrete fixes (subject line, body, spam risk)
Weather API: current weather and next 3 hours temperature by lat, lon (open-meteo)
Cold email generator: personalized outreach email from proven templates (founder, agency, freelance)
Bulk email verification: up to 20 addresses in one $0.01 call. For each: syntax, MX presence, disposable and role-address flags, free-provider flag, mail provider and a deliverable verdict with reason, plus a summary cou...
Email authentication and deliverability report for a domain in one call: SPF (with -all check), DMARC policy strength, DKIM presence across common selectors, MTA-STS, BIMI and MX, combined into a 0-100 score with an A-F...
From an email address to its company: runs the full domain-intel report on the address's domain (registration, DNS, homepage title and description, social profiles, tech stack, trust score) and flags free/disposable prov...
Role-address detection: is an email a generic mailbox (info@, support@, sales@, billing@, admin@, noreply@...) rather than a person? Returns the role, its category (support, sales, technical, legal, no-reply) and whether...
Email normalizer: lowercases, strips plus-tags, applies provider rules (Gmail ignores dots, googlemail.com = gmail.com, outlook/hotmail/yahoo/proton/fastmail +tags) and returns a canonical form for deduplicating contact...
Gravatar check: whether an email address has a public Gravatar avatar and profile (via the SHA-256 hash, no data sent to third parties beyond the hash), with the avatar and profile URLs. Enrich contacts with a real avata...
Extract every email address from a block of text: deduplicated, lowercased, syntax-validated, with a per-domain count. Turn scraped pages, documents or logs into a clean contact list. $0.01 per call (text up to 50 KB).
Does office@<domain> look deliverable? Builds the office@ address for the domain you give and runs the verifier: syntax, MX presence, mail provider, disposable/free-provider flags, SPF/DMARC presence and a deliverable/ri...
Email list hygiene report for up to 50 addresses in one $0.01 call: duplicates, invalid syntax, disposable domains, role addresses, free-webmail share, domains without MX, and a keep / review / remove split. Clean a sign...
DMARC record parser and validator: paste any DMARC TXT string and get the policy, subdomain policy, percentage, report addresses, alignment modes, whether it enforces, and warnings for common mistakes (p=none, missing ru...
Catch-all mailbox hint (no SMTP probing): estimates whether a domain accepts mail to any address, from provider defaults (Google Workspace/Microsoft 365 usually reject unknown users; many small hosts and Cloudflare Email...
Mail provider detection for a domain: the primary inbound provider from MX (Google Workspace, Microsoft 365, Proofpoint, Zoho, Proton, iCloud, GoDaddy, IONOS...) and the sending services authorised in SPF (SendGrid, Mail...
Validate a email: tests the value against a well-known email pattern and returns valid true/false, the pattern used (so you can reuse it), and, when it fails, the first character position that breaks the rule. Format val...
Hash a string: sha256, sha512, sha1, md5, CRC32, base64 checksum - crypto hash API for UTF-8 text
Detect language, formality and tone of a text with confidence scores. Deterministic heuristics + compact wordlists. Returns iso_639-1 + register. — $0.001 USDC/call on eip155:8453. Pay-per-call via x402 — no API key, no...
Email deliverability audit for a domain: MX records, parsed SPF with qualifier grading, DMARC policy grade, DKIM selector probing (12 common selectors), and DNSBL reputation checks (dronebl, SpamCop, Barracuda, Spamhaus)...
Generate a SHA-256 cryptographic hash from UTF-8 text
Validate email address: checks syntax, whether the domain exists and accepts mail (MX records), disposable or temporary email domains, role addresses (info@, admin@), free webmail providers and SPF/DMARC presence, then r...
Bulk company lookup: run one tool (tech stack, open jobs, hiring intent, Google Ads or company profile) on many domains with one payment. Step 1 (free): send {tool, domains}; every domain is checked and you get each stat...
SPF flattener: recursively expands a domain's SPF includes and redirects into the final list of authorised IPv4/IPv6 ranges and returns a flattened record. Fix the 10-lookup limit or audit exactly which networks may send...