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Spreadsheets made for people in, typed, row-identified, versioned, governed tables to your agent, Excel in its original formatting back out. MCP, CLI, REST and SDKs.
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!
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About D2B on Product Hunt
“Spreadsheets for AI Agents”
D2B was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #154 on the daily leaderboard. Spreadsheets made for people in, typed, row-identified, versioned, governed tables to your agent, Excel in its original formatting back out. MCP, CLI, REST and SDKs.
D2B was featured in Spreadsheets (9.9k followers), Developer Tools (521.6k followers) and Artificial Intelligence (481.7k followers) on Product Hunt. Together, these topics include over 222.4k products, making this a competitive space to launch in.
Who hunted D2B?
D2B was hunted by Kei Kubo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how D2B stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Kei Kubo