Edit Word documents (.docx) with coding agents via MCP

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flowchart LR
    DocInLeft["<b>Existing .docx</b><br/>on disk"]

    subgraph Server["@usejunior/safe-docx — local MCP server"]
        direction LR

        subgraph ReadParse["<b>1. Read</b>"]
            direction TB
            RPTool["<code>read_file(file_path,<br/>&nbsp;&nbsp;format)</code>"]
        end

        subgraph Locate["<b>2. Locate</b>"]
            direction TB
            LocTool["<code>grep(file_path,<br/>&nbsp;&nbsp;pattern)</code>"]
        end

        subgraph Edit["<b>3. Edit</b>"]
            direction TB
            EditTool["<code>replace_text(<br/>&nbsp;&nbsp;target_paragraph_id,<br/>&nbsp;&nbsp;old_string, new_string,<br/>&nbsp;&nbsp;instruction)</code>"]
        end

        subgraph Save["<b>4. Save</b>"]
            direction TB
            SaveTool["<code>save(save_to_local_path,<br/>&nbsp;&nbsp;save_format)</code>"]
        end

        ReadParse --> Locate
        Locate --> Edit
        Edit --> Save
    end

    DocInRight["<b>Saved .docx output</b><br/>on disk"]

    subgraph Client [" "]
        direction TB
        Prompt["<b>Prompt</b><br/>'Change NDA governing law to Delaware'"]
        Agent["<b>Coding agent / MCP client</b><br/>Claude Code · Cursor · Gemini CLI"]
        Prompt --> Agent
    end

    DocInLeft --> RPTool
    SaveTool --> DocInRight
    Agent <-->|tool call / tool result| Server

    classDef io fill:#f5f5f5,stroke:#888,color:#222
    classDef server fill:#eff6ff,stroke:#3b82f6,color:#1e3a8a
    classDef stage fill:#eef2ff,stroke:#6366f1,color:#1e1b4b
    classDef tools fill:#ecfdf5,stroke:#10b981,color:#064e3b
    classDef ext fill:#ddd6fe,stroke:#7c3aed,color:#3b0764
    classDef hidden fill:none,stroke:none
    class DocInLeft,DocInRight io
    class Server server
    class ReadParse,Locate,Edit,Save stage
    class RPTool,LocTool,EditTool,SaveTool tools
    class Prompt,Agent ext
    class Client hidden

Safe Docx is an open-source TypeScript stack for surgical editing of existing Microsoft Word .docx files. It is built for workflows where an agent proposes changes and a human still needs reliable, formatting-preserving document edits.

If you review contracts with AI, the slowest step is often applying accepted recommendations in Word. Safe Docx turns that into deterministic tool calls.

Why This Exists

AI coding CLIs are great with code and text files but weak on brownfield .docx editing. Business and legal workflows still run on Word documents, so we built a native TypeScript path for:

• reading and searching existing documents in token-efficient formats
• making surgical edits without destroying fo

... View full README on GitHub