Simon Willison's Weblog simonwillison.net

Pelican on a Bike - Raytracer Edition

simonwillison.net·25w

Reverse engineering Codex CLI to get GPT-5-Codex-Mini to draw me a pelican

simonwillison.net·25w·Hacker News

Quoting Kenton Varda

simonwillison.net·25w

Mastodon 4.5

simonwillison.net·25w

Quoting Josh Cohenzadeh

simonwillison.net·25w

Could LLMs encourage new programming languages?

simonwillison.net·25w·Hacker News

Using Codex CLI with gpt-oss:120b on an NVIDIA DGX Spark via Tailscale

simonwillison.net·25w

Game design is simple, actually

simonwillison.net·25w

You should write an agent

simonwillison.net·25w

Quoting Ben Stolovitz

simonwillison.net·25w

Kimi K2 Thinking

simonwillison.net·25w

Quoting Nathan Lambert

simonwillison.net·25w

Video + notes on upgrading a Datasette plugin for the latest 1.0 alpha

simonwillison.net·25w

Code research projects with async coding agents like Claude Code and Codex

simonwillison.net·25w·Lobsters, Hacker News

Open redirect endpoint in Datasette prior to 0.65.2 and 1.0a21

simonwillison.net·25w

Removing XSLT for a more secure browser

simonwillison.net·25w

Quoting @belligerentbarbies

simonwillison.net·25w·Hacker News

Code execution with MCP: Building more efficient agents

simonwillison.net·25w

A new SQL-powered permissions system in Datasette 1.0a20

simonwillison.net·25w

MCP Colors: Systematically deal with prompt injection risk

simonwillison.net·25w

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