@eigenpal/docx-editor-agents

Word-like API for AI agents to review DOCX documents. Read, comment, suggest tracked changes, accept/reject. Headless, server-friendly, browser-friendly. The library you build your AI document features on top of.

Quick Start

npm install @eigenpal/docx-editor-agents

import { readFile, writeFile } from 'node:fs/promises';
import { DocxReviewer } from '@eigenpal/docx-editor-agents';

const buffer = await readFile('contract.docx');
const reviewer = await DocxReviewer.fromBuffer(buffer, 'AI Reviewer');

reviewer.addComment(5, 'This cap seems too low.');
reviewer.replace(5, '$50k', '$500k');

await writeFile('contract.reviewed.docx', new Uint8Array(await reviewer.toBuffer()));

That's the static-review path: drop into a CI bot, queue worker, or Lambda. No editor needed. ~50 KB.

Packages

Package	Description
@eigenpal/docx-editor-react	React adapter. Toolbar, paged editor, plugins.
@eigenpal/docx-editor-vue	Vue 3 adapter. Toolbar, paged editor, plugins.
@eigenpal/docx-editor-core	Framework-agnostic core: OOXML parser, serializer, layout engine, ProseMirror schema. Depend on this if you fork the React or Vue adapter.
@eigenpal/docx-editor-i18n	Shared locale strings and types consumed by both adapters.
@eigenpal/docx-editor-agents	Agent SDK and chat UI: framework-agnostic bridge, MCP server, AI SDK adapters, plus React UI.

Forking the adapter? Keep your fork thin. Depend on @eigenpal/docx-editor-core directly so parser, serializer, and rendering fixes land in your build automatically, without backporting each upstream change by hand.

Live editor bridge

Wire AI tools into a running <DocxEditor> so add_comment, suggest_change, find_text etc. show up live in the user's editor.

// React
import { useAgentChat } from '@eigenpal/docx-editor-agents/react';
const { executeToolCall, toolSchemas } = useAgentChat({ editorRef, author: 'Assistant' });

// Vue
import { useAgentBridge } from '@eigenpal/docx-editor-agents/vue';
const { executeToolCall, toolSchemas } = useAgentBridge({ editorRef, author: 'Assistant' });

Both share the same EditorRefLike contract from /bridge, the same tool catalog, and the same AgentMessage[] chat shape. For other frameworks, build the bridge directly via createEditorBridge from @eigenpal/docx-editor-agents/bridge.

MCP server

Transport-agnostic core. Wrap it with your own auth, storage, and transport (HTTP-SSE, WebSocket, queue worker, anything).

import { McpServer, createReviewerBridge, DocxReviewer } from '@eigenpal/docx-editor-agents';

app.post('/api/mcp', requireAuth, async (req, res) => {
  const buffer = await loadDocxForUser(req.user, req.params.docId);
  const reviewer = await DocxReviewer.fromBuffer(buffer, req.user.name);
  const server = new McpServer(createReviewerBridge(reviewer), {
    name: 'acme-review',
    version: '1.0.0',
  });

  res.json(server.handle(JSON.parse(req.body))); // sync, transport-free, never throws

  await saveDocxForUser(req.user, req.params.docId, await reviewer.toBuffer());
});

The built-in agent tools (read_document, read_selection, read_page, read_pages, find_text, read_comments, read_changes, add_comment, suggest_change, apply_formatting, set_paragraph_style, insert_break, reply_comment, resolve_comment, scroll) are exposed automatically via MCP tools/list and tools/call. MCP spec version: 2025-06-18.

A local stdio MCP bin is one-document-per-config (Claude Desktop loads its list at startup), which doesn't fit a multi-doc product. Host the server yourself with your own auth and storage.

Subpaths

Each subpath tree-shakes independently. Vue and AI SDK peers are optional via peerDependenciesMeta.

Word API parity

The bridge mirrors the Office.js Word API pattern: locate a stable handle (paraId) first, then mutate. The contract is type-enforced at compile time:

import type { WordCompatBridge } from '@eigenpal/docx-editor-agents';

EditorBridge is statically required to satisfy WordCompatBridge. Drop a method that maps to a Word API call and typecheck breaks.

Contributing

Contributions welcome. See CONTRIBUTING.md for setup, tests, and the one-time CLA signature.

Commercial Support

[!TIP] Questions or custom features? Email [email protected].