Spreadsheet Kit MCP
Let your coding agent read, edit, recalculate, and verify Excel workbooks in a mounted folder without breaking formulas or leaving the workspace unsafe.
Overview
spreadsheet-mcp is a Build-phase MCP server that gives agents guarded Excel workbook analysis, editing, recalc, and verification against a Docker-mounted workspace.
What is this MCP server?
- Agent-safe Excel analysis and editing with verification steps after changes
- Recalculation support so formula-dependent sheets stay trustworthy
- Docker OCI package (`ghcr.io/psu3d0/spreadsheet-mcp:full-full`) with stdio MCP transport
- Mounts a host workbook directory to `/data` via `--workspace-root`
- Designed for builders who keep plans, models, and exports in Excel rather than only in code
- Server manifest version 0.10.1
- Package identifier ghcr.io/psu3d0/spreadsheet-mcp:full-full
- Stdio transport with named args --workspace-root and --transport
Community signal: 47 GitHub stars.
What problem does it solve?
Agents are great at code but clumsy with live Excel files, and ad-hoc paste workflows silently break formulas and audit trails.
Who is it for?
Indie builders who keep financial models, ops trackers, or client workbooks in Excel and want the agent to edit in place under a fixed `/data` mount.
Skip if: Teams that have fully moved to Google Sheets, database-only analytics, or who cannot run Docker locally.
What do I get? / Deliverables
After you register the server and mount a workbook directory, your agent can work on real `.xlsx` files with recalc and verification instead of fragile manual exports.
- Agent-driven reads and edits on mounted `.xlsx` workbooks
- Recalculated sheets with verification after structural or formula changes
- A repeatable local Excel + agent workflow scoped to one workbook folder
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Journey fit
Spreadsheet work usually lands while you are wiring product logic, ops spreadsheets, or data handoffs—not during pure idea research. This is an MCP bridge to `.xlsx` files on disk, which fits the integrations shelf alongside other agent-accessible local or Docker-backed services.
How it compares
Local Excel MCP integration with a bounded workspace—not a cloud spreadsheet API or a one-off CSV parsing skill.
Common Questions / FAQ
Who is spreadsheet-mcp for?
Solo and small-team builders using Claude Code, Cursor, or similar agents who still depend on Excel workbooks and want safe, tool-driven edits.
When should I use spreadsheet-mcp?
Use it when you need the agent to analyze, change, recalculate, or verify `.xlsx` files in a known folder during product or ops work—not for casual chat summaries of a pasted table.
How do I add spreadsheet-mcp to my agent?
Register the MCP server from the manifest, run the `ghcr.io/psu3d0/spreadsheet-mcp:full-full` container with stdio transport, and pass `--workspace-root` with a Docker volume from your host workbook directory to `/data`.