
Arezzo
Exposes three MCP tools for modifying Google Docs without silently corrupting them. The Docs API uses UTF-16 code units with cascading index shifts, so every insert or delete breaks subsequent indices in your batch. Arezzo compiles semantic operations (insert at heading, replace named range content, add table row) into correctly ordered batchUpdate requests with proper index arithmetic. Includes read_document to map headings and ranges, edit_document to execute compiled changes, and validate_operations for dry runs. Handles text formatting, tables, lists, images, headers, footers, and footnotes. Requires Google OAuth setup via arezzo init, then works through stdio transport in Claude Desktop, Cursor, or VS Code.
- tools
- 3
- auth
- Required
- transport
- STDIO
- env var
- 1
- last updated
- Apr 22, 2026
Tools
3 toolsPublic tool metadata for what this MCP can expose to an agent.
read_documentReturns the document's structural map: headings with hierarchy, named ranges, tables, section boundaries.
Returns the document's structural map: headings with hierarchy, named ranges, tables, section boundaries.
No parameter schema in public metadata yet.
edit_documentCompiles operations into correct batchUpdate requests and executes them.
Compiles operations into correct batchUpdate requests and executes them.
No parameter schema in public metadata yet.
validate_operationsCompile-only dry run that returns the compiled requests for inspection without executing.
Compile-only dry run that returns the compiled requests for inspection without executing.
No parameter schema in public metadata yet.
Sponsors
Configuration
GOOGLE_APPLICATION_CREDENTIALS*Path to the Google OAuth2 client credentials JSON (Desktop application type, Docs API enabled). Required — the Google Docs API does not support anonymous access. Run 'arezzo init' to walk through OAuth setup and write platform config.
Readme
Arezzo
Deterministic compiler for Google Docs API operations.
You cannot safely modify a Google Doc by constructing batchUpdate requests yourself. The API uses UTF-16 code units with cascading index shifts — insert 10 characters at position 50, and every subsequent index in your batch is now wrong. A single miscalculation silently corrupts the document with no error message.
Arezzo compiles semantic intent into a correct request sequence. Tell it what you want to do; it handles the index arithmetic.
For AI agents (MCP tools)
Arezzo exposes three tools via the Model Context Protocol:
read_document(document_id)
→ Returns the document's structural map: headings with hierarchy,
named ranges, tables, section boundaries. Call this before editing
so you know what addresses are available.
Details
- Repository
- github.com/convergentmethods/arezzo
- Website
- github.com/ConvergentMethods/arezzo
- Category
- AI & LLM Tools
- Package
arezzo- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active