Creator of Datasette & Django Co-creator @ Independent
El Cerrito, CA
British programmer, co-creator of the Django web framework, and one of the best-known software engineers experimenting with LLMs to boost productivity. Runs simonwillison.net, an influential blog offering practical analysis of LLM advancements. Built 77+ HTML/JS apps and 6+ Python apps entirely by prompting LLMs. Created the LLM command-line tool for running prompts from the terminal.
simonw pushed to claude/analyze-test-coverage-PZUtI in simonw/showboat · March 15, 2026 05:07 1 commit to claude/analyze-test-coverage-PZUtI e92184b
simonw created a branch in simonw/showboat · March 15, 2026 05:06 refs/heads/claude/analyze-test-coverage-PZUtI in simonw/showboat Updated Mar 15
GitHub’s slopocalypse – the flood of AI-generated spam PRs and issues – has made Jazzband’s model of open membership and shared push access untenable. Jazzband was designed for a world where the worst case was someone accidentally merging the wrong PR. In a world where only 1 in...
simonw pushed to main in simonw/tools · March 15, 2026 02:34 1 commit to main bf0b1ef #254)
simonw merged simonw/tools#254 · March 14, 2026 11:34 Add link handling to rich-text-to-markdown #254 Convert text elements to text markdown https://claude.ai/code/session_018q9Arxy2HrpsyNB13wpwxQ +72 -4
simonw pushed to claude/add-link-handling-5YoaC in simonw/tools · March 15, 2026 02:32 1 commit to claude/add-link-handling-5YoaC 15ee9a4
simonw created a branch in simonw/tools · March 15, 2026 02:30 refs/heads/claude/add-link-handling-5YoaC in simonw/tools Updated Mar 15
I was a speaker last month at the Pragmatic Summit in San Francisco, where I participated in a fireside chat session about Agentic Engineering hosted by Eric Lui from Statsig. The video is available on YouTube. Here are my highlights from the conversation. Stages of AI adoption...
simonw pushed to main in simonw/research · March 14, 2026 12:34 1 commit to main 36f1263
simonw merged simonw/research#94 · March 13, 2026 21:34 csrf-protection-demo: demonstrate modern CSRF defenses using Sec-Fetch-Site headers #94 Clone https://gist.github.com/b7fb3dcc34571f3568d7f67f1ebe31aa.git to /tmp and read both markdown files Then create a demo app in...
"I've built 77+ tools entirely by prompting LLMs. Several new prototypes added per week."
— simonwillison.net