Harvey
Harvey is an agent app that finds prospects, writes and sends cold emails, and books meetings for small businesses, using your existing Claude or ChatGPT subscription.
What it is good for
- Finding businesses to sell to and reaching out by email
- Writing personalized cold emails that reference each prospect
- Handling replies and working conversations toward a meeting
- Running sales outreach without paying for prospecting tools
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free and open source
- Type
- Agent app
- Tasks
- Works with
- Claude Code, Codex, Gmail, Google Workspace, Microsoft 365, TrulyInbox
Momentum
- Rank this week
- #44
- Best rank
- #8 week 42, 2026
- Stars gained last week
- +1,389
- GitHub stars
- 3,963
GitHub numbers as of Nov 2, 2026. Updated weekly.
Ranking history
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is Harvey free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use Harvey?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does Harvey work with?
- According to its own documentation, it works with Claude Code, Codex, Gmail, Google Workspace, Microsoft 365, and TrulyInbox.
- What is Harvey good for?
- Finding businesses to sell to and reaching out by email, writing personalized cold emails that reference each prospect, handling replies and working conversations toward a meeting, and running sales outreach without paying for prospecting tools.
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