Spencer Zhao Cofounder — CoreSpeed San Jose, CA

I build the systems behind AI agents.

Cofounder at CoreSpeed — the access and control layer for AI agents. We connect them to the apps you already use and keep them in bounds. I also build and ship products end to end. Based in San Jose, California.

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Spencer Zhao
948 commits · last 12 mo
148 PRs · last 12 mo
37 public repos
2020 on GitHub since

What I do

01

CoreSpeed

The access and control layer for AI agents: plug your agent into the apps you already use — 50+ via one OAuth — with built-in tools, memory, and plain-English policy + agent pay to keep it in bounds.

02

Full products

Ideas taken end to end and shipped: BuildLog, Fixo, Amazon Order Wizard.

03

Open source & hardware

Public tools like Claude Max Gateway, plus electronics — an FPGA clock and a tiny lithium UPS.

Stack

what I build with
Languages
  • TypeScript
  • Python
  • Rust
  • Kotlin
  • C / Verilog
Runtimes
  • Deno
  • Bun
  • Node.js
Web
  • Next.js
  • React
  • Astro
  • Tailwind
  • Hono
AI
  • Vercel AI SDK
  • MCP
  • AG-UI
  • Claude
  • Gemini
Data & infra
  • Postgres
  • Supabase
  • Drizzle
  • MongoDB
  • Stripe
  • Vercel

Selected
work

All projects →
Live

CoreSpeed

The access and control layer for AI agents. Plug your agent into 50+ apps through one OAuth so it gets real work done — connectors, built-in tools, and memory — with plain-English policy and agent pay to keep it in bounds. Portable across Claude Code, Codex, and Cursor.

  • Platform
  • Agents
  • Connectors
50+ app integrations corespeed.io ↗

BuildLog

Live

Turns your team's commits, PRs, and releases into marketing — AI drafts social posts you review and publish to X, LinkedIn, and Bluesky.

  • Next.js 16
  • Supabase
  • AI SDK

Fixo

Mobile-mechanic platform — an AI agent diagnoses car faults from a chat, writes the repair estimate, and drives scheduling and Stripe payments.

  • Next.js
  • Deno + Hono
  • Stripe
  • AG-UI

Amazon Order Wizard

Offline-first browser extension for tracking Amazon orders with optional cloud sync — a React 19 extension backed by a Rust (Axum) + MongoDB API.

  • Browser extension
  • React
  • Rust

Claude Max Gateway

OSS

Dual-format API gateway for a Claude Max subscription — exposes both OpenAI- and Anthropic-style Messages APIs through the Claude Code CLI.

  • TypeScript
  • LLM
  • Gateway

Zypher Agent

OSS

A minimal, open-source framework for building AI agents with full control over tools, providers, and execution flow.

  • TypeScript
  • Agents
  • Open source

FPGA Clock

A multi-function digital clock built in Verilog, running on an FPGA.

  • Verilog
  • FPGA
  • Hardware

Approach

I like turning ideas into running systems — fast. Most of what I build sits where LLMs meet real products, from agent frameworks to full apps.

Writing

All posts →

AI agent access and control: a field guide

One map of the agent stack: access through one OAuth, built-in tools, memory, plain-English control, and portability across hosts — and where CoreSpeed fits.

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The setup tax: why connecting AI agents to apps is hard

Connecting AI agents to apps means OAuth, token refresh, scopes, rate limits, pagination, and webhooks per service. Here's why that work stalls agent projects.

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Building AI products fast: my stack and patterns

The stack and patterns I use for building AI products fast — Vercel AI SDK, Deno + Hono, Supabase, Drizzle, Stripe, AG-UI — drawn from BuildLog and Fixo.

Read →

Get in touch

Let's talk.