HAPI MCP
Turn API contracts into tools that AI systems can actually use.
Visit projectIndependent product labEst. 2021
Questiondefaults.Build what’s next.
La Rebelion Labs is where stubborn questions become useful software. We explore AI, APIs, and developer infrastructure—then ship the tools we wish already existed.
Own the stackShow the workShip the argument
LRL / SIGNAL 001TRANSMITTING
AI systemsAPI craftTools for buildersWe question✦We prototype✦We break things✦We ship
The operating thesis
Default paths are optimized for yesterday.
The status quo is useful—right up until it becomes invisible. We make assumptions visible, test them in public, and turn the useful discoveries into products.
- 01Find the constraint everyone learned to tolerate.
- 02Build a smaller, sharper alternative.
- 03Document the scars and release the work.
Projects in orbit
The rebellion is a portfolio.
Independent products, open tools, and experiments sharing one point of view.
Explore every projectQontent Tube
A local-first voiceover workspace built for scripts that keep changing.
Visit projectAPICove
A sharper workbench for designing, testing, and shipping APIs.
Visit projectField notes
Ideas with dirt under their nails.
Architecture, AI, APIs, and the uncomfortable work of making systems better.
Browse the archive
The Agent Is the Least Trustworthy Part of the System
Eight AI and agentic systems signals from October 15–21, 2026, and three practical experiments for safer harnesses, durable state, and verifiable outcomes.
Which AI Coding Harness? A Field Guide to AI in Your SDLC
The model is the engine, the harness is the car. We sort today's AI coding tools into six families, map them onto your software lifecycle, and share a practical way to choose.
EssayOct 16, 202616 min
Your Tech Stack Is Not Your Identity: How Engineers Can Stay Valuable in the AI Era
How engineers can maintain their value and professional identity in the age of AI.
EssayOct 16, 20266 min
REA on a Token Diet
Measure and cut the tokens Reverse Engineering Anything puts in your AI agent's context, keep agents working while big binaries decompile, and see which optimizations are still open proposals.
Build an MVP with Spec-Driven Development and OpenSpec
A hands-on course on Spec-Driven Development with AI coding agents. Learn the theory, set up OpenSpec, and build a tested MVP in three small changes.
How to Query 100 Million Rows in Under a Second with ClickHouse
Learn what ClickHouse is, why it is fast, when to use it, and how to load 100 million rows and answer a dashboard question in about a third of a second.
EssayOct 14, 202610 min
How to Reverse Engineer Any App Feature with REA and Your AI Agent
Connect REA to your AI coding agent, trace a real app feature from a button to the code that runs it, and check every claim against evidence you can verify yourself.
Start Building an AI Harness Effectively
Learn how to effectively build an AI harness to maximize the value of AI models and create reusable systems.
Models Are Becoming Commodities, Orchestration Is the New Advantage
AI models are rapidly commoditizing. The real advantage now is AI orchestration: memory, verification, safety guardrails, and workflow design. Learn a practical framework to build reliable AI systems.