# Plumbline.ai

- **Event:** [Built with Opus 4.7: a Claude Code hackathon](https://cerebralvalley.ai/e/built-with-4-7-hackathon)
- **When:** Apr 21 at 12:00 PM – Apr 27 at 2:00 AM (EDT)
- **Where:** Online
- **Team:** [Asaf Erez](https://cerebralvalley.ai/u/Wutang)
- **GitHub:** https://github.com/wutangasaf/hackathonopus
- **Demo video:** https://www.youtube.com/watch?v=6i5ijwjFp7Y
- **Gallery:** https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery/61

Plumbline.ai is an AI co-pilot for construction lenders , banks and Construction Risk Management Consultants (CRMCs) verifying monthly draw requests against the plans they're financing. It pairs frontier-grade reasoning (Claude Opus 4.7) with modern field telemetry , drones, IoT sensors , 360° walkthroughs, and fixed-position construction cameras, to turn an inspector's manual workflow into a structured, audit-ready pipeline.

Today verification is manual: an inspector drives to site, eyeballs progress, and writes a narrative the loan officer takes on faith. OCC and FDIC have flagged weak Change Order and Schedule-of-Values discipline as a safety-and-soundness issue.

An 8-agent Opus 4.7 architecture ingests sealed PDF plans across four disciplines (architectural, structural, electrical, plumbing), the loan's finance plan, the AIA G703 Schedule of Values, and authenticated site evidence. A Managed-Agents Supervisor then investigates findings autonomously and produces a Gap Report with a draw verdict — APPROVE / APPROVE_WITH_CONDITIONS / HOLD / REJECT, citing G703 line items and flagging unapproved scope.

Two industries that resisted automation, bank credit risk and field construction , converge here. Agents do the cognition; drones and IoT bring the field witness. Built at the seam between regtech for financial services (my work) and 50 years of practice (my father's). 
MIT licensed

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Markdown version of https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery/61. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt