#### PR Dependency Tree
* **PR #14579** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **New Features**
* Full JSON-RPC MCP endpoint with batch requests, per-message
validation, method dispatch (initialize, ping, tools/list, tools/call)
and request cancellation
* Tool listing and execution with input validation, standardized
results, and improved error responses
* **Chores**
* Removed an external protocol dependency
* Bumped MCP server version to 1.0.1
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#### PR Dependency Tree
* **PR #14452** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **Bug Fixes**
* Improved null-safety, dependency tracking, upload validation, and
error logging for more reliable uploads, clipboard, calendar linking,
telemetry, PDF/theme printing, and preview/zoom behavior.
* Tightened handling of all-day calendar events (missing date now
reported).
* **Deprecations**
* Removed deprecated RadioButton and RadioButtonGroup; use RadioGroup.
* **Chores**
* Unified and upgraded linting/config, reorganized imports, and
standardized binary handling for more consistent builds and tooling.
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## Summary
This PR adds write capabilities to AFFiNE's MCP (Model Context Protocol)
integration, enabling external tools (Claude, GPT, etc.) to create and
modify documents programmatically.
**New MCP Tools:**
- `create_document` - Create new documents from markdown content
- `update_document` - Update document content using structural diffing
for minimal changes (preserves document history and enables real-time
collaboration)
**Implementation:**
- `markdown_to_ydoc.rs` - Converts markdown to AFFiNE-compatible y-octo
binary format
- `markdown_utils.rs` - Shared markdown parsing utilities (used by both
ydoc-to-md and md-to-ydoc)
- `update_ydoc.rs` - Structural diffing implementation for updating
existing documents
- `DocWriter` service - TypeScript service for document operations
- Exposes `markdownToDocBinary` and `updateDocBinary` via napi bindings
**Supported Markdown Elements:**
- Headings (H1-H6)
- Paragraphs
- Bullet lists and numbered lists
- Code blocks (with language detection)
- Blockquotes
- Horizontal dividers
- Todo items (checkboxes)
**y-octo Changes:**
This PR reverts the y-octo sync (ca2462f, a5b60cf) which introduced a
concurrency bug causing hangs when creating documents with many nested
block structures. It also ports the improved `get_node_index` binary
search fix from upstream that prevents divide-by-zero panics when
decoding documents.
## Test Results ✅
### Unit Tests (47/47 passing)
| Test Suite | Tests | Status |
|------------|-------|--------|
| markdown_to_ydoc | 16/16 | ✅ Pass |
| markdown_utils | 11/11 | ✅ Pass |
| update_ydoc | 13/13 | ✅ Pass |
| delta_markdown | 2/2 | ✅ Pass |
| affine (doc parser) | 5/5 | ✅ Pass |
### End-to-End MCP Testing ✅
Tested against local AFFiNE server with real MCP client requests:
| Tool | Result | Notes |
|------|--------|-------|
| `tools/list` | ✅ Pass | Returns all 5 tools with correct schemas |
| `create_document` | ✅ Pass | Successfully created test documents |
| `update_document` | ✅ Pass | Successfully updated documents with
structural diffing |
| `read_document` | ✅ Pass | Existing tool, works correctly |
| `keyword_search` | ✅ Pass | Existing tool, works correctly |
**E2E Test Details:**
- Started local AFFiNE server with PostgreSQL, Redis, and Manticore
- Created test user and workspace via seed/GraphQL
- Verified MCP endpoint at `/api/workspaces/:workspaceId/mcp`
- Tested JSON-RPC calls with proper SSE streaming
- Confirmed documents are stored and indexed correctly (verified via
server logs)
## Test Plan
- [x] All Rust unit tests pass (47 tests)
- [x] Native bindings build successfully (release mode)
- [x] Document creation via MCP works end-to-end
- [x] Document update via MCP works end-to-end
- [x] CodeRabbit feedback addressed
- [ ] Integration testing with Claude/GPT MCP clients
Closes#14161
---
**Requested by:** @realies
**Key guidance from:** @darkskygit (use y-octo instead of yjs for memory
efficiency)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Create documents from Markdown: generate new documents directly from
Markdown content with automatic title extraction
* Update documents with Markdown: modify existing documents using
Markdown as the source with automatic diff calculation for efficient
updates
* Copilot integration: new tools for document creation and updates
through Copilot's interface
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Chores**
* Updated dependency versions across the monorepo (notably zod →
^3.25.76 and vitest-related packages → ^3.2.4), plus minor package bumps
to align tooling and libraries. These are manifest/test-tooling updates
only; no public API, behavior, or end-user features were changed.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- New Features
- Smarter embedding pipeline skips re-embedding when content hasn’t
changed; added content sanitization for embeddings and workspace content
retrieval.
- Bug Fixes
- Re-embedding now requires both a document update and the last
embedding being older than 10 minutes, reducing unnecessary work.
- Refactor
- Consolidated embedding preprocessing and moved sanitization utilities
into shared models; upserts now refresh stored content.
- Tests
- Expanded snapshot-based tests covering multiple time/age scenarios for
embedding decision logic.
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Introduced a new endpoint for MCP (Model Context Protocol) server
interaction under `/api/workspaces/:workspaceId/mcp`, enabling advanced
document reading and search capabilities within workspaces.
* Added support for semantic and keyword search tools, as well as
document reading through the MCP server, with user access control and
input validation.
* **Improvements**
* Enhanced metadata handling in semantic search results for improved
clarity.
* Streamlined internal imports and refactored utility functions for
better maintainability.
* **Chores**
* Added a new SDK dependency to the backend server package.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
DarkSky