Excel MCP Server (FsOpenXmlDsl)

A typesafe F DSL for building Excel workbooks, interpreted into calls against the DocumentFormat.OpenXml SDK. The DSL is a plain data model (records/DUs with structural equality) - the interpreter (Writer) compiles it to OOXML, and the reverse transform (Reader) parses an existing .xlsx back into the same DSL.

People who need coding agent tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in F#.

VERIFIED ACTIVE

LAST COMMIT 2026-09-16 · ★ 8 · #202 OF 229 MAINTAINED CODING AGENT · VERIFIED 2026-09-18

MIT · F# · how we verify → /methodology

01 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

repo age created 2026-08-23 - young repo, little track record yet

license MIT - declared in the repository

registry registry publisher io.github.MarkNicholls is not the repo owner (kookerella-ltd) - the registry entry was published by someone else

02 · What Excel MCP Server (FsOpenXmlDsl) can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.6.4 · 2026-09-16

Self-contained, single-file builds of the MCP server for machines with no .NET runtime installed - one per platform. Matches Kookerella.FsOpenXmlDsl.Mcp 0.6.4 on NuGet. Unzip and run directly; no install required.…

v0.6.3 · 2026-08-30

Standalone, self-contained builds of the MCP server (Kookerella.FsOpenXmlDsl.Mcp) for anyone who doesn't want a .NET dependency at all. · Two ways to run this server · Already have .NET? Use the NuGet-distributed…

03 · Who maintains Excel MCP Server (FsOpenXmlDsl)

Excel MCP Server (FsOpenXmlDsl) is maintained by kookerella-ltd. We track 2 MCP servers from kookerella-ltd - 2 actively maintained, 8 combined GitHub stars, oldest repo from Aug 2026.

04 · Facts

repository
github.com/kookerella-ltd/kookerella.fsopenxmldsl
website
https://github.com/Kookerella-Ltd/Kookerella.FsOpenXmlDsl/tree/master/src/Kookerella.FsOpenXmlDsl.Mcp
category
coding agent - ranked #202 of 229 actively-maintained coding agent servers as of 2026-09-18.
release cadence
2 releases in the last 90 days (latest 2026-09-16)
registry
io.github.MarkNicholls/fsopenxmldsl-mcp (active, first published 2026-08-23 · 10 versions)
packages
nuget:Kookerella.FsOpenXmlDsl.Mcp

05 · Excel MCP Server (FsOpenXmlDsl) FAQ

What is Excel MCP Server (FsOpenXmlDsl)?

A typesafe F DSL for building Excel workbooks, interpreted into calls against the DocumentFormat.OpenXml SDK. The DSL is a plain data model (records/DUs with structural equality) - the interpreter (Writer) compiles it to OOXML, and the reverse transform (Reader) parses an existing .xlsx back into the same DSL.

Is Excel MCP Server (FsOpenXmlDsl) still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-16 and it shipped 2 releases in the last 90 days. We re-verify nightly.

06 · Alternatives to Excel MCP Server (FsOpenXmlDsl)

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