Spencer Zhao CoreSpeed · Cofounder and engineer San Jose, CA

I build the systems behind AI agents.

Cofounder and engineer at CoreSpeed. I work on app access, model routing, durable memory, usage metering, and payments. Based in San Jose, California.

Spencer Zhao
1,560 commits · last 12 mo
290 PRs · last 12 mo
40 public repos
2020 on GitHub since

What I do

01

CoreSpeed

I co-founded CoreSpeed. The current product gives cloud agents managed access to apps, built-in tools, and durable memory.

02

Systems around the model

I build OAuth and connector paths, model gateways, usage metering, Stripe billing, and the evidence packet sent to the model.

03

Memory research & open source

Lore measures the gap between retrieving the right record and sending the right evidence to the model. I also maintain Zypher Agent and Claude Max Gateway.

Stack

what I build with
Languages
  • TypeScript
  • Python
  • Rust
  • Kotlin
  • C / Verilog
Frontend
  • React
  • Next.js
  • Astro
  • Tailwind
Backend & runtime
  • Cloudflare Workers
  • Hono
  • Bun
  • Node.js
  • Deno
AI & agents
  • MCP
  • Vercel AI SDK
  • AG-UI
  • Claude
  • Codex
  • Gemini
Data & payments
  • Postgres
  • pgvector
  • Drizzle
  • Supabase
  • Stripe
  • Railway

Selected
work

All projects →
Current

CoreSpeed

Managed app access, built-in tools, and durable memory for cloud agents. I work on its gateway, billing, and public launch.

  • Connectors
  • Memory
  • Agent infrastructure
APPS tools + memory corespeed.io ↗

BuildLog

Live

Turns a team's commits, PRs, and releases into draft posts for X, LinkedIn, and Bluesky.

  • Next.js 16
  • Supabase
  • AI SDK

Fixo

A mobile-mechanic platform where an AI agent diagnoses faults, writes estimates, then handles scheduling and Stripe payments.

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

Amazon Order Wizard

An offline-first browser extension for tracking Amazon orders, with optional sync through a Rust and MongoDB API.

  • Browser extension
  • React
  • Rust

Claude Max Gateway

OSS

A dual-format API gateway that exposes OpenAI and Anthropic 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

A model call rarely decides whether an agent works. The failure usually sits one boundary earlier: identity, tool access, state, billing, or the evidence packet.

Get in touch

Let's talk.