Serra is a Y Combinator-backed AI recruiter that replaces manual Boolean sourcing with a natural-language workflow. Recruiters describe a role in plain English and Serra searches LinkedIn, GitHub, Crunchbase, the open web and the company's own ATS to build a unified, scored shortlist with transparent reasoning for every candidate. The agent runs continuously in the background to keep pipelines fresh and can be extended with AI agents that handle outreach, follow-ups and interview scheduling. Serra offers self-serve tiers as well as a full-service per-hire managed option, and is used by teams at EquipmentShare, Quince, RevenueCat and others to skip manual sourcing and get qualified interviews booked directly on recruiters' calendars.