Build your own Apollo.io with Claude Code
A B2B lead database and outreach tool: search people by title and company, enrich contacts, email sequences and more.
The Claude Code prompt
Build my own take on Apollo.io: a B2B lead database and outreach tool. Give it an original name, logo, colours and copy, and do not use Apollo.io's name, branding or assets. Version one should have: - Search people by title and company - Enrich contacts - Email sequences - Tasks - Reply tracking The hard part: Data. Use enrichment APIs and only build the workflow layer. How to build it: 1. Read this folder first. If it is empty, set up Next.js (App Router, TypeScript, Tailwind) with Postgres through Prisma or Supabase, and Supabase Auth or Auth.js for sign-in. Write a short PLAN.md with the data model, screens, third-party services and what you are leaving out of version one. 2. Build the core loop end to end before anything else: search people by title and company, working with real data saved to the database. 3. Add the rest of the features one at a time, and seed realistic demo data so every screen looks alive. 4. Keep API keys in environment variables, and put any paid service behind a small interface with a local stub, so the app runs on a fresh machine without accounts. 5. Run it, click through every screen on desktop and mobile widths, fix what breaks, and finish with a summary of what works, what is stubbed and how to deploy it.
Paste it into Claude Code in an empty folder. It plans first, so read PLAN.md and steer before it starts building.
Version one
- Search people by title and company
- Enrich contacts
- Email sequences
- Tasks
- Reply tracking
The hard part
Data. Use enrichment APIs and only build the workflow layer.
Make it yours: a niche Apollo.io ignores, an original name and brand, and one feature it does badly done well.
More to build
- Your own Mailchimp
Email marketing software: audience lists and tags, drag-and-drop email builder, campaigns and scheduling and more.
- Your own HubSpot
A CRM with marketing tools: contacts, companies and deals, pipeline board, email logging and more.
- Your own Salesforce
An enterprise CRM: leads, accounts, contacts and opportunities, custom fields, pipeline reports and more.
- Your own Klaviyo
Email and SMS marketing for online stores: sync customers and orders from Shopify, segments by behaviour, flows for abandoned carts and more.
- Your own Pipedrive
A sales pipeline CRM: deals on a drag-and-drop pipeline, activities and reminders, contacts and more.
- Your own Semrush
An SEO and keyword research suite: keyword research, rank tracking, site audit crawler and more.