The MCP Abstraction Tax
Every layer from App to API to MCP loses fidelity. An exploration of what gets lost and why it matters for enterprise APIs.
About
I'm a Senior Developer Relations Engineer at Google, focusing on Google Workspace. My work involves creating tools and supporting the open-source community.
Before Google, I had the opportunity to work with geospatial data at Descartes Labs and the US Geological Survey.
When I'm not coding, I'm usually running long distances in the mountains of Colorado.
Topics
Lead Story
Your App Should Ship an MCP Server
| ai, mcp, rust, agents, code, native, gpui
I embedded an MCP server inside a native Rust prose editor. It became the single most impactful architectural decision I've made, not for users, but for how I build the product itself.
You Need to Rewrite Your CLI for AI Agents
Human DX optimizes for discoverability. Agent DX optimizes for predictability. What I learned building a CLI for agents first.
How to Connect PostgreSQL to Google Apps Script (JDBC Guide)
Connect Google Apps Script to PostgreSQL via JDBC. Covers connection strings, JSONB/UUID workarounds, parameterized queries, transactions, and PostGIS.
Building a Fiction AST and Training a NER Model with GLiNER
How I vibecoded a fiction-specific AST and NER pipeline using LLM distillation, GLiNER fine-tuning, and ONNX export for CPU inference in Rust.
Workout Frequency
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VS Code Git Remote Color
Automatically colorize your VS Code window based on the git remote.
Agent Identity for Git Commits
How to configure AI agents to push commits to GitHub using a separate bot identity without modifying local git configuration.
Extracting Gold from Antigravity's Brain
A workflow for extracting architectural patterns and challenges from AI agent walkthroughs.
Abandon Git LFS because AI Agents
Git LFS causes fatal errors in AI agents like Jules due to proxy conflicts and hook limitations. Learn why I abandoned LFS and migrated back to standard Git.
Building a MCP Client in Google Apps Script
Learn how to communicate with Model Context Protocol (MCP) servers using Apps Script and UrlFetchApp. Incorporate the MCP client into Vertex AI tool calling.
Using Gemini in Apps Script
Learn how to use the new built-in Vertex AI Advanced Service in Google Apps Script to access Gemini models directly, without the need for complex UrlFetchApp calls.
Currentonly Scopes in Google Apps Script
Learn about the @OnlyCurrentDoc annotation and currentonly scopes in Google Apps Script. Understand why and how to use them, along with their critical limitations regarding Advanced Services and external APIs.
2026 Crazy Mountain 100
I'm running the Crazy Mountain 100 in 2026! It's a rugged 100 miler in Montana that serves as a Hardrock qualifier.
Resolve Chat User IDs to Emails: Least Privilege
Securely resolve Google Chat User IDs to emails without Domain-Wide Delegation. Use Service Account Impersonation and custom Admin roles.
Apps Script CacheService: Unofficial Documentation and Limits
The unofficial documentation for the Apps Script CacheService. Learn about key/value constraints, size limits, and the undocumented FIFO batch eviction policy.
UrlFetchApp: The Unofficial Documentation
The unofficial guide to Google Apps Script UrlFetchApp. Master authentication, fetchAll for parallelism, web scraping, and debugging "Address Unavailable".
Secure Secrets in Google Apps Script
Do not hardcode secrets in Google Apps Script. Use Properties Service or Google Cloud Secret Manager.
Securing Gmail AI Agents against Prompt Injection with Model Armor
Securing Gmail AI agents against Prompt Injection and untrusted content using Google Cloud Model Armor.
Google Workspace Developer Tools MCP Server
Announcing the new MCP server for Google Workspace Developer Tools, providing AI agents with access to official documentation and API snippets.
React Wrapper for Google Drive Picker
Announcing the new React component for the Google Drive Picker, wrapping usage of the web component for easier integration.
Google Workspace Developer Tools VS Code Extension
Announcing the new Google Workspace Developer Tools extension for VS Code, working with Antigravity and providing OAuth2 scope linting and MCP support.
My Race
Running Tracker (km)
Year-to-Date Distance: 726.5 km
Race Results
- Run 50.52 km 1001 m
- Run 49.51 km 1142 m
- 43.95 km 1485 m
- 391.21 km 9436 m
- 99.78 km 1693 m
- 161.39 km 6705 m
- 147.63 km 9507 m
- 173.22 km 6428 m
- 20.15 km 712 m
- 163.50 km 5553 m