Agents that hold up when traffic and complexity spike.
Sunset Beach builds infrastructure automation, developer tooling, and high-performance agent systems focused on latency, reliability, and observability.
Open Source
Active projectsq
High-performance terminal AI assistant for developers.
apicli
Modern API testing CLI and Node.js module.
CodeSprout
Intelligent app and code generation tooling.
gptjs
Minimalist GPT-style language model in JS.
compare-network
HTTP request performance benchmarking.
vanilla-light
Lightweight full-stack web framework.
Writing
Recent postsPrompt Contracts for Reliable Agents
Why stable agent behavior starts with explicit rules for inputs, tool usage, and failure handling.
Runbooks for On-Call Automation
Operational automation works when checkpoints, rollback paths, and human handoffs are designed in.
Schemas Before Pipelines
Clear data contracts and ownership matter more than another layer of movement and transformation.
Cache Invalidation for Real-Time APIs
Real-time APIs still need caching, but they demand explicit freshness windows and repair loops.
Evaluation Loops for Tool-Using Agents
Why robust agent teams score plans, tool calls, recoveries, and outcomes as one connected loop.
Kill Switches for Autonomous Systems
Design hard stops that are fast, scoped, observable, and safe to trigger during incidents.
State Machines for Agent Workflows
Replace hidden prompt state with explicit lifecycle transitions to make agents debuggable.
Latency Budgets for LLM Products
A practical method for dividing milliseconds across retrieval, reasoning, and generation.
Zero-Downtime Postgres Migrations
A rollout playbook for schema evolution without frozen deploys or risky maintenance windows.
Local-First DevTools for Small Teams
Why tiny teams move faster by designing workflows that work offline before they scale online.
Building AI Agents That Actually Work
Production lessons for making LLM agents robust, observable, and maintainable.