How Freezing a JSON Contract First Can Save Your Weekend Coding Project

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A software developer's blog post advocates for defining and locking a JSON output contract before writing any parsing or AI-assisted code during a weekend project. The approach involves committing a fixed four-field schema to version control as the very first step, before any model or helper tool is invoked. A minimal validator script is then used to confirm that outputs match the frozen contract, with non-zero exit codes flagging any drift. The method is framed as a deliberate scope-control strategy, explicitly excluding features like dashboards, OAuth, and agent loops from the weekend build surface. The author argues that freezing the contract prevents AI coding assistants from expanding scope unchecked, which can consume limited weekend hours without producing a shippable demo.

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