In this article, we'll show you how to draft an invoice the moment a HubSpot deal closes — from Claude, with no API key, no code, and no handoff email.
If your technical team wants to build this with MCP or the SDK, see the developer implementation guide.
What you'll do
- Find closed-won HubSpot deals that don't have an invoice yet
- Ask Sanka to draft the invoice with the right line items
- Review and approve in Sanka
- Send the same day the deal closes
Setup time: 5 minutes (one-time Claude connector step).
Run it from Claude
Most AI-native sales teams already live in Claude. The Sanka connector lets Claude read your deals and draft invoices against them — no API key, no code.
1. Connect Sanka to Claude
Claude Settings → Connectors → Sanka → Connect. One OAuth login. Done. Full walkthrough in Getting Started.
2. Ask for the workflow
"Show me closed-won deals from this month that don't have invoices. Draft invoices for any that are missing, using the deal amount and the contact's billing info."
3. Review and send
Claude surfaces the gaps, drafts each invoice, and waits for your confirmation before anything ships. You review the line items, adjust if needed, and hit send.
Prefer ChatGPT? Add the Sanka Custom GPT from the GPT store and paste the same prompt — it works identically.
Why this matters
Across sales and RevOps teams, handoff delays almost always come from unclear ownership, not missing dashboards. Finance waits for sales to "send over the details." Sales assumes the HubSpot record is enough. Nobody checks until the customer asks where their invoice is.
Automating the draft removes the ambiguity. Sanka builds the invoice the moment the deal closes; a human still reviews it, but the default shifts from "waiting for someone to act" to "review what the system already prepared."
A 2026 RevOps audit by Nidish found the sales-to-finance handoff is where the most expensive revenue leakage happens — billing errors, missed renewals, and pure timing delay.
Example scorecard
Track your own rollout. The 4.2-day baseline comes from Scratchpad's 2023 RevOps Trends Report; replace the other baselines with your team's before-state.
| Metric | Before | After |
|---|---|---|
| Average invoice delay | 4.2 days | Same-day |
| Missed billing items | 8% of deals | < 1% |
| Finance follow-ups to sales | 12/week | 2/week |
Next steps
- Technical implementation guide — build this with MCP or the SDK
- Order-to-Cash automation — the broader lead-to-cash workflow
- Invoice product page — Sanka's invoicing features
Connect Sanka to Claude and ask: "Which closed deals don't have invoices yet?"
