Ops Vault is a library of five production-grade n8n workflows that run the revenue plumbing most small businesses still do by hand: lead intake & AI qualification, review-request follow-up, appointment booking sync, abandoned-inquiry recovery, and multi-channel lead routing. Every workflow ships with the failure paths already built — retries, dead-letter capture, and owner alerts — so a bad payload, an expired API key, or an API outage never silently drops a lead.