I got tired copying and pasting ai responses into my google sheets. So I built a agent to do it for me. Here's what i learned.

I got tired of copy-pasting AI responses into Google Sheets. Ask Claude to research something, copy the answer, paste it into a cell, do it again for the next row. A hundred times. So I used the Anthropic Agent SDK to do it for me. And honestly, Opus 4.8 is absurd at tool calling. Like, really good. I spent a lot of time in their "Building Effective Agents" post, and one idea stuck with me: the best agents aren't built on heavy frameworks or special libraries they're simple, composable patterns. So I wondered if I could apply that same logic to the most tedious thing I do all day: research inside a spreadsheet. So I started thinking... I just wanted the cells to fill themselves in. I didn't want to sit in a chatbot tab pasting answers one row at a time. What if an agent just did that part for me? You write a column header in plain English something like "find this company's pricing," or "get the founder's LinkedIn," or "read this PDF and pull the key terms." You drop in your rows, and each column is an agent that goes and gets the answer and fills itself in. No formulas, no copy-paste. It's not just firing a prompt at Claude and pasting whatever comes back. The agent actually does the task browses, reads, extracts checks the output, and retries what breaks. By the time you look at the sheet, the column's already done. Been using it for 2 months. The research grind that used to eat my afternoons just disappeared. Called it [Frax.ai](http://Frax.ai) If you're building agents or just curious about practical use cases, happy to chat.