# An agent qualifies inbound leads; one SDR reviews and sends

Ten SDRs sorted a spam-filled contact form. Now an agent researches, qualifies and drafts, and one SDR presses send.

Category: Speed to lead
Difficulty: advanced
Updated: Oct 18, 2026
URL: https://revstackai.co/use-cases/inbound-lead-agent-with-human-send

## Problem

Contact sales form full of spam. Response times hit 24 to 48 hours because leads went to whoever was next, regardless of timezone.

## How AI solves it

Form submission is enriched (Clearbit, ZoomInfo).

An agent runs deep web research on the company and person.

AI sorts the lead into qualified, follow-up, support or not sales-related.

Slack pings the SDR with the research and the reasoning.

For qualified leads, a draft reply is already in Outreach. The SDR reviews and presses send.

## Verdict

10 inbound SDRs to 1; lead-to-opportunity conversion held flat.

## Tools

- [Vercel Lead Agent template](https://vercel.com/templates/next.js/lead-processing-agent): Open-source reference app: form, deep research agent, qualification, Slack approval.
- [Exa](https://exa.ai/): Web search API used for the research step.
- [Slack](https://slack.com): Human-in-the-loop approval.
- [Outreach](https://www.outreach.io/): Sequencer where approved drafts land.

## RevStack prompt

Written by RevStack. This is not the sourced result below.

Inputs:
- Form submission fields
- Enrichment data
- Research notes on the company
- Your qualification buckets

You qualify an inbound lead for an SDR who will review your work.

Use only the inputs. Do not invent company facts.

Form: {{form}}
Enrichment: {{enrichment}}
Research: {{research}}
Buckets: {{buckets}}

Return:
1. Bucket, with a two-sentence reason.
2. The facts the SDR should verify.
3. If qualified, a reply under 120 words the SDR can send after review.

Example output, written by RevStack, not a reported result:

Bucket: QUALIFIED. They asked about enterprise pricing and the domain matches a 400-person company.
Verify: headcount and whether they already have an account.
Draft: Thanks for reaching out about enterprise. Happy to walk through pricing. Do Tuesday or Wednesday afternoon work for 30 minutes?

## Result

'We went from 10 inbound SDRs to 1 and saved $2M+. 32x ROI on an agent we built in a weekend.'

Vendor case study. Reported by [Drew Bredvick, Director of GTM Engineering, Vercel](https://drew.tech/posts/building-vercels-first-gtm-agent).

## Setup

1. Shadow your best SDR for a week: what makes a lead exciting or a disqualify
2. Fork the Lead Agent template
3. Define your qualification buckets
4. Route the Slack approval to the SDR on shift
5. Track response time and lead-to-opportunity rate before and after