What is libreoffice-mcp-tools AGENTS.md?

Project instructions for developing a TypeScript MCP server that uses LibreOffice to work with office documents. TypeScript is a programming language that adds types to JavaScript, and MCP lets agents call tools.

Use it when adding or changing document tools, managing document sessions, handling DOCX/XLS/PPT files, or working with the LibreOffice adapter and its locking rules.

It gives contributors the project's structure, supported formats, tool conventions, and rules for safely managing LibreOffice processes.

libreoffice-mcp-tools AGENTS.md — Instructions file for Codex and OpenCode by passerbyflutter: Project instructions for developing a TypeScr

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add instructions/passerbyflutter/libreoffice-mcp-tools/agents-md

Clone the repo

git clone --depth 1 https://github.com/passerbyflutter/libreoffice-mcp-tools

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/passerbyflutter/libreoffice-mcp-tools/agents-md.svg)](https://agentmods.dev/instructions/passerbyflutter/libreoffice-mcp-tools/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/passerbyflutter/libreoffice-mcp-tools/agents-md"><img src="https://agentmods.dev/badge/instructions/passerbyflutter/libreoffice-mcp-tools/agents-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 396 This file is loaded in full into every session.

When invoked 396 The same file — it is already loaded in full.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00396	$0.00396
Opus 5	$0.00198	$0.00198
Sonnet 5	$0.00079	$0.00079
Haiku 4.5	$0.00040	$0.00040

Measured 5d ago against content hash 688c32f33b84, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

libreoffice-mcp-tools AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 42 lines

What it actually says

AGENTS.md — LibreOffice MCP Tools

What This Is

TypeScript MCP server for AI agents to read/write/edit Office documents via LibreOffice. Mirrors chrome-devtools-mcp architecture. Token-efficient by design.

Quick Context

Entry: src/index.ts → createMcpServer()
Tools defined in src/tools/*.ts using defineTool() from src/tools/ToolDefinition.ts
All tools take docId (from document_open) + optional pagination params
LibreOffice subprocess managed by src/LibreOfficeAdapter.ts behind src/Mutex.ts
DOC/XLS/PPT legacy formats auto-converted on document_open via LibreOffice CLI

Key Files to Read First

src/tools/ToolDefinition.ts — how to define a tool
src/DocumentContext.ts — session/document management
src/tools/tools.ts — all tool registration
.github/copilot-instructions.md — full context

Coding Rules

TypeScript ESM, .js imports even for .ts files
Zod schemas for all tool params
Never spawn soffice directly — use LibreOfficeAdapter
Always acquire Mutex before LibreOffice calls
Response: appendText() for summaries, attachJson() for data, attachMarkdown() for doc content

Supported Formats

DOCX, DOC (via LO bridge), XLSX, XLS (via LO bridge), PPTX, PPT (via LO bridge), ODT, ODS, ODP, RTF (all via LO bridge), CSV, TXT (native), PDF (read-only via LO)

Build & Run

npm install
npm run build
node build/bin/libreoffice-mcp.js

Tests

npm test

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

5d ago First seen · 42 lines · 396 tokens per session scan A 688c32f33b84

Subscribe to this mod's changes

libreoffice-mcp-tools AGENTS.md is an instructions file published in the GitHub repository passerbyflutter/libreoffice-mcp-tools (0 stars, last pushed 4mo ago), licensed MIT. It adds 396 tokens to every session, about $0.0020 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

libreoffice-mcp-tools AGENTS.md