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Harvey Turns Claude Subscriptions Into a Full Open-Source Sales Agent Harvey is an open-source autonomous sales agent that runs cold email campaigns on your Claude or ChatGPT subscription with no per-token API bill. - Harvey is an open-source autonomous sales agent running on Claude or Codex CLIs, no API keys required. - Routes model calls through Claude Pro/Max or ChatGPT Plus subscriptions instead of per-token API billing. - Five sub-agents (Scout, Writer, Sender, Handler, Analyst) share editable Markdown skill files for sales knowledge. - Ships with 23-signal prospecting catalog that users must explicitly confirm before collection begins. - Default OpenStreetMap discovery is free; DataForSEO option costs ~$0.37 per 1,000 listings. - MIT licensed, Python 3.11+, SQLite backend, Gmail/Microsoft 365/SMTP mail providers supported. Harvey is an open-source sales agent that had collected more than 2,300 GitHub stars within its first weeks. The project discovers prospects, researches companies, drafts cold-email sequences, processes replies, and is designed to book meetings. Harvey sends model requests through subscription-backed command-line interfaces, or CLIs. Claude is the default, using the claude CLI with a Claude Pro or Max subscription. The optional Codex path uses a ChatGPT Plus, Pro, or Business plan. This design removes the need for a separate usage-based Anthropic or OpenAI API account. The cost model changes the architecture Model-driven sales agents can consume substantial API credit because research, scoring, drafting, and reply handling run repeatedly. Harvey moves that usage onto an existing subscription allowance. Operators still pay for the subscription, email infrastructure, optional data providers, and any compliance services. The scheduler reads the active provider’s reported subscription usage and throttles work to preserve capacity. The documented max_daily_claude_percent setting controls how much of the Claude allowance Harvey may consume, leaving headroom for other work. Actual throughput remains subject to provider quotas, CLI behavior, and applicable service terms. The project documentation estimates that comparable commercial prospecting tools start at $250 to $500 per month. It also reports that single-provider contact coverage can fall near 30% for local businesses with five to 50 employees. Those figures come from the project’s own comparison and will vary by market, geography, and data source. This story is for Pro members You've reached the end of the free preview. Upgrade to AlphaSignal Pro to read the full article - and everything else behind the paywall.
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