Simon Willison’s Weblog

Understanding JSON Schema (via) Useful, comprehensive short book guide to JSON Schema, which finally helped me feel like I fully understand the specification.

Posted 24th March 2021 at 2:57 am

Recent articles

Video + notes on upgrading a Datasette plugin for the latest 1.0 alpha, with help from uv and OpenAI Codex CLI - 6th November 2025
Code research projects with async coding agents like Claude Code and Codex - 6th November 2025
A new SQL-powered permissions system in Datasette 1.0a20 - 4th November 2025

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