§ Use case
📧

Lead Enrichment & Validation.

Validate email addresses, enrich leads with company data, and verify domains — all via API.

Email Validation DNS Lookup WHOIS Favicon Tech Stack
§ Why ToolCenter for this

Five lines, not five vendors.

  • Filter out disposable and invalid emails
  • Detect free vs business email providers
  • Enrich leads with the prospect's tech stack
  • Verify domains are real and active
Node.js Copy · lead-enrichment
const email = await fetch('https://api.toolcenter.dev/v1/email-validate', {
  method: 'POST',
  headers: { Authorization: 'Bearer tc_live_...', 'Content-Type': 'application/json' },
  body: JSON.stringify({ email: lead.email })
}).then(r => r.json());

if (email.is_valid && !email.is_disposable) {
  const domain = lead.email.split('@')[1];
  const stack = await tc.techstack.run({ url: `https://${domain}` });
  // …enrich lead record with stack info
}
§ Ship this workflow today

Stop stitching APIs.
Start shipping lead.

First 100 calls are free. Upgrade when the workflow hits production.