Building Cluster Headache Tracker from a Hospital Bed
Cluster headaches hit up to eight times a day. The hospital gave me a paper form with one line per day. So I built an app between attacks.
Open Source
RubyLLM 1.0
One Ruby API for OpenAI, Claude, Gemini, and more. Chat, tools, streaming, Rails integration. No ceremony.
A Standard API for LLM Capabilities and Pricing
No provider exposes model capabilities and pricing through their API. So we're building one.
The LLM Capabilities and Pricing API is Live
The standard API for LLM model information I announced last month is now live and already integrated into RubyLLM 1.3.0.
RubyLLM 1.12: Agents Are Just LLMs with Tools
Agents aren't magic. They're LLMs that can call your code. RubyLLM 1.12 adds a clean DSL to define and reuse them.
RubyLLM 1.14: From Zero to AI Chat App in Under Two Minutes
RubyLLM 1.14 ships a Tailwind chat UI, Rails generators for agents and tools, and a simplified config DSL. Watch the full setup in 1:46.
Ruby Deserves Beautiful Documentation
The Ruby community doesn't have a great documentation theme. So I made one. Jekyll VitePress Theme brings VitePress's docs UX to Jekyll.
I Built a Monitor Configuration Tool for Hyprland
A spatial TUI editor with drag-and-drop, safe apply with revert, workspace planning, and a hotplug daemon. All in two zero-dependency Go binaries.
Making the Rails Default Job Queue Fiber-Based
I patched Solid Queue to run jobs as fibers. Now it ships in 1.6.0, making the Rails default ready for highly concurrent, cooperative I/O-bound jobs.
kamal-backup: Scheduled Rails Backups for Kamal Apps
One Kamal accessory for encrypted Rails database and Active Storage backups, restore drills, and redacted evidence for security reviews.
RubyLLM 1.15: Image Editing, Cost Tracking and Less Tool Boilerplate
RubyLLM 1.15 adds image editing, cost tracking, inferred tool parameters, additive callbacks, and Rails fixes.
Production Experience Cannot Be Hallucinated
A paid Medium article claimed hard-won RubyLLM production lessons, but its code had never run. Regenerating it only made the fabrication harder to spot.
RubyLLM 1.16: Concurrent Tool Execution, Rails-Style Instrumentation, and api_base for Every Provider
RubyLLM 1.16 adds concurrent tools with threads or fibers, Rails-style instrumentation, and proxy support through api_base for every native provider.
RubyLLM::Schema Is Now Schematist: A JSON Schema DSL for Ruby with Full Draft 2020-12 Coverage
Schematist is a Ruby JSON Schema DSL with full Draft 2020-12 coverage, render-time values, standards-compliant output, and no runtime dependencies.
ArchSpec 1.0: Executable Architecture Specification for Ruby's Agentic Coding Era
ArchSpec turns your architecture into an executable spec: declare components and boundaries in one Ruby file, and every change gets checked, whether a person or an agent wrote it.
kamal-backup 1.0: A Backup Is Only Real After You Restore It
kamal-backup 1.0 brings exact Rails restores, restore drills, and PostgreSQL, MySQL, MariaDB, SQLite, SFTP, and rclone support to Kamal.
RubyLLM 2.0: Providers, Protocols, and Provider Gems
OpenAI moves to the Responses API by default, while a new provider architecture and gem generator make external providers first-class.
RubyLLM 2.0: The Agentic Loop, Exposed
RubyLLM 2.0 breaks ask into verbs you can drive yourself: stage a message, call the model once, run tools, step, resume mid-round, and cancel from anywhere.
