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recalc

Spreadsheet where AI agents fill cells and execute commands

Developer ToolsOpen sourceOpen source · verified#ai-agents#spreadsheet#developer-tools

Listed by the ProductPerch team from Hacker News · not launched here yet

What is recalc?

recalc is an open source spreadsheet application designed for working with AI agents. Every cell in the grid can store a standard value, a formula, a terminal command, or an active AI agent like Claude Code or Codex. The tool runs locally on your computer without requiring an account or external server.

Agents write their plans and results directly into cells while you watch. You can place test commands next to agent outputs to verify work automatically. If a test fails, the cell turns red. Instead of chatting with an agent, you edit the relevant cell to change its instructions or correct its output.

The application uses a Model Context Protocol server so connected agents understand the spreadsheet structure. Boards are stored as simple folders of files, keeping all data on your machine. The project is currently in early beta and may contain bugs or breaking changes between versions.

recalc features

  • Cells hold values, formulas, terminal commands, or AI agents
  • Real time agent output tracking in a shared grid
  • Automatic test execution to verify agent results
  • Local storage using standard file folders
  • Compatible with Claude Code, Codex, and MCP servers
  • Built with Rust and Tauri for desktop performance

Who uses recalc and for what

  • Run multiple code generation agents side by side and monitor their progress in one view
  • Ask a batch of documents the same questions and collect structured answers with source links
  • Set up automated tests that trigger whenever an agent updates a code cell
  • Manage a team of AI workers by assigning each a dedicated row and reviewing outputs together
  • Keep development workflows offline by storing all agent boards as local files

recalc FAQ

Is recalc free?

Yes, recalc is free and open source under the Apache-2.0 license.

Does recalc require an internet connection or cloud account?

No, recalc runs entirely on your computer. It does not require an account, server, or tracking services. The only network request is an optional daily update check.

What operating systems does recalc support?

The application officially supports macOS and offers experimental support for Linux.

Can I use recalc with my own AI models?

The website does not say. It currently lists compatibility with Claude Code, Codex, and pi through an MCP server.

How does recalc handle data privacy?

All board data is stored locally as a folder of files. The developers state there is no account, no server, and no tracking involved.

Is recalc ready for production use?

No, the project is in early beta. The creators warn to expect bugs, rough edges, and potential breaking changes between versions.

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