Find and rank B2B leads with verified emails
The author built a Claude Code agent that finds B2B leads, ranks them by fit and pulls verified emails for the best, using Tavily and Prospeo on free tiers.
Done withClaude Code
- What they did
- The author spent a weekend building an agent in Claude Code. Claude Code does the reasoning, Tavily does the research to find real B2B leads, and Prospeo enriches the best-ranked leads with verified emails. It was designed to use each tool's API credits sparingly.
- How it went
- The author says the agent finds leads, ranks them by how likely they are to buy, and pulls verified emails for the top ones. The visible text gives no result numbers, and the build steps are paywalled.
- Worth knowing
- Only the Claude Code subscription costs money, provided you stay within the free API tiers of Tavily and Prospeo. The full walkthrough is behind Medium's member-only paywall.
Try it yourself with Claude Code
Build me a small lead-finding tool in [project folder]. It should search the web for [type of company] in [industry or region], score each one from 1-10 on fit with [my ideal customer description], and for the top [number] look up verified contact emails using [email lookup service and API key]. Output a CSV sorted by score and stop once it runs end to end on a test batch of [number] companies.
Want help getting this working? Join the Vibe Coding Academy ↗ Run by Alex Finn, who also runs this site.
Source: medium.com · Undated
Related use cases
Turn tickets into merged pull requests
Pulls tasks from GitHub Issues or Linear, then runs Claude Code or Codex in isolated Kubernetes pods to carry each one through to a PR.
Index a newsletter archive and repurpose writing
Per the guide, Casey Newton used Claude Code to index 818 newsletter editions in under 30 minutes, and writers audit note vaults and turn essays into newsletter and thread files.
Build a company structure with Claude Code agents
The poster used Claude Code agents to set up a company, including a marketing agent that handles brand identity and color palettes.
Sell services through an agent that takes payment and delivers
An agent runs a transaction flow, creates Stripe checkout links, verifies payment before delivering a service, and asks the owner on Telegram to approve refunds or disputes.
Custom agent
Run full-stack SEO with an n8n agent
An n8n agent analyzes GA4, rank and SERP data, tracks competitor keywords, rewrites articles and saves performance reports.
Auto-apply to jobs on LinkedIn with ChatGPT Agent
A commenter said ChatGPT Agent applied to 40 LinkedIn jobs and led to 2 interviews, though they hit a monthly usage limit quickly.
Get 5 like this every morning
The best things people got an AI agent to do, each with the prompt to try it.