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AIAn Alian Software company
B2B SaaSAI Agents & Automation

Inbound Lead Qualification Agent

Fixed-fee Sprint + Monthly Retainer

47%

Increase in booked demos (64 → 94/month)

The challenge

B2B SaaS getting 800+ inbound leads/month with only two SDRs able to follow up on ~200. Close rate on inbound stuck at 4.1%.

The approach

  • Two weeks of discovery — listened to 30 SDR calls, mapped what 'qualified' actually sounded like
  • Engage every inbound lead within 60 seconds across email, web chat, SMS
  • Run the same discovery flow a good SDR would: pain, timeline, budget, authority, fit
  • Qualified leads auto-booked into AE calendar with full briefing note

The build

  • LangGraph with branching qualification flow, tunable per ICP
  • Channels: web chat widget, email via Postmark inbound, SMS via Twilio
  • Cal.com calendar integration with round-robin AE assignment
  • HubSpot CRM sync with structured qualification fields
  • 200 historical conversations replayed weekly to catch model drift
  • Human-in-loop: high-value ambiguous leads flagged to an SDR within 5 minutes

The results

  • 47% increase in booked demos (64 → 94/month)
  • Time-to-first-touch: 6.4 hours → 47 seconds
  • Close rate held at 21% — same as SDR-qualified
  • No additional headcount
  • Surfaced 5 messaging gaps the team didn't know about
"The agent qualifies better than my junior SDRs because it never has a bad day. And when it doesn't know, it knows it doesn't know — and routes to a human."
VP of Sales

Tech stack

  • Anthropic Claude Sonnet
  • LangGraph
  • Twilio
  • Cal.com
  • HubSpot
  • Postmark
  • Langfuse

Want a build like this?

20 min. No deck. We'll tell you whether this pattern fits your situation, and what an honest scope looks like.