---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/lead-finder/use-cases/build-prospect-lists/claude
---
# How to Build Prospect Lists with Claude

Claude builds prospect lists through an iterative refinement process where you can adjust criteria on the fly. Start with broad industry and size filters, then narrow down based on the results. Ask Claude to enrich promising leads, score them by fit, or export the final list in a format ready for your CRM.

## Setup

claude mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: claude mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask Claude: "Build a prospect list of AI startups with 20-100 employees that raised Series A"
3. Claude uses find_companies to identify matching companies
4. Ask: "Find the CEO or CTO at each company and enrich with funding data"
5. Request: "Format the list as a table with company, contact, funding, and outreach angle"

## Example Prompt

```
Build a prospect list of AI infrastructure startups with 20-100 employees. Find the CTO at each, enrich with funding data, and suggest outreach angles.
```

## Tips

- Ask Claude to score prospects by fit with your ideal customer profile
- Request the list in CSV format for direct CRM import
- Claude can suggest personalized subject lines for each prospect
