Recalc - Spreadsheet with Claude Code and Codex agent cells
Show HN: Recalc – Spreadsheet where cells can be Claude Code or Codex terminals
Recalc reimagines the spreadsheet for the agentic AI era: every cell can hold a value, a formula, a terminal command, or a full Claude Code or Codex agent. Watch agents fill cells in real time, open any one in its own terminal, and steer them by editing cells instead of interrupting chats. Use it to verify an agent's "done" with test cells that turn red, ask a hundred documents the same questions with cited answers, or run multiple agents side by side with a single Needs You list. It's free, open source, runs locally with no account or server, and connects to agents you already use via an MCP server.
Every cell can hold a number, a formula, a terminal command, or an AI agent. Agents write their plans and results into cells while you watch.
- giannischatz
Interesting approach. One thing that always bites spreadsheet-centric
tools: cell references survive insertion/deletion in weird ways
(formulas don't, LLM "cell pointers" definitely won't).
If a cell's agent output lives at A3 and someone inserts a row above,
is the agent now watching A4? The naive answer is yes, but then
re-running the agent might produce different output than what's
displayed in the referenced range elsewhere. Spreadsheet users are
very used to this working magically for formulas — if agents break
the invariant, it'll feel broken even when nothing technically is.
How are you handling that?