Why on earth would you want to revert to Spec-Driven Development? Yes, agents are way faster at writing code. And (some) humans are better at system thinking. But we also suck at planning. Any experienced engineer knows you simply cannot sit down, write the specs and then write…↗

The easiest way to prototype a general agent is to use Claude Code. Write some scripts to access your APIs, write a custom Claude MD, then prompt Claude Code with some queries. Does it work? Use the Claude Agent SDK to productionize it.↗

How we prototype using Claude Code Prototyping used to be so time-consuming that you could only afford to make 1 or 2. Claude Code changed that, now we build dozens of prototypes for a single feature Here's how we rebuilt the todo list, with the actual prompts included:↗