Solo Builder Ships AI SDR Agent, Joining a Growing Wave of Single-Purpose Business Agents

A solo developer launched Quarry, an AI agent that finds prospects, writes outreach, and books meetings — emblematic of a trend where individual builders replace entire sales roles with targeted agent tools.

@polsia announced Quarry, a single-purpose AI agent built to handle the full outbound sales pipeline: prospecting, writing outreach messages, and booking meetings. The pitch is direct: "Every B2B company needs outbound pipeline. Most can't afford an SDR. So I built Quarry."

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