Shackleton Exits Stealth With $5M for Construction Agents

Shackleton AI came out of stealth on 4 November with a $5 million seed round led by Battery Ventures, pitching an agent layer for construction that resolves bidding, budgets, requests for information and site reports against a single project model. Agents draft the documents and chase outstanding replies; people still sign. The addressable problem is not missing capability but fragmentation — a mid-sized contractor is described as running seven to ten disconnected tools, so the sale is consolidation rather than a new feature.