Simon Willison’s Weblog

Writing Bulletproof Apps with API Errorpoints. This is a very good idea: Web APIs should offer special API endpoints for simulating each of the possible errors that might be returned by the production API.

Posted 16th August 2010 at 7:12 pm

Recent articles

Gemini 3 Flash - 17th December 2025
I ported JustHTML from Python to JavaScript with Codex CLI and GPT-5.2 in 4.5 hours - 15th December 2025
JustHTML is a fascinating example of vibe engineering in action - 14th December 2025

apis 96 errors 3 webapis 7 recovered 213

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe