Hey Product Hunt! 👋 I’m Kei, CEO of D2B. Today, we’re introducing D2B: spreadsheets for AI agents. AI agents can write code, clean spreadsheets, and generate reports. But once they’ve changed your data, a few basic questions become surprisingly hard to answer: What changed? Where did this number come from? How do I undo it? We built D2B to make those questions answerable. Here’s how it works: • Bring in messy Excel files and turn them into typed tables your agent can work with. • Inspect transformations, trace results to source rows, compare versions, and undo changes. • Pull SQL and Python transforms into Git, review them in a PR, and push them back. • Return results to people as Excel, including writing values back into the original workbook’s formatting. Use D2B with ChatGPT, Claude, Codex, Claude Code, or your own agent through MCP, API, CLI, or SDKs. For example, an agent can combine monthly sales spreadsheets, generate a summary, and investigate why a number changed—with the transformation history available for review. We’re launching for developers building agents that work with real business data. There’s a 14-day free trial, with no credit card required. We’d love to hear: what spreadsheet task would you give an agent if you could inspect and undo its changes? Try it here: https://d2b.dev/developers Thanks for taking a look. I’m happy to answer questions!

D2B

Spreadsheets for AI Agents

Spreadsheets for AI Agents