Datasette Apps 0.2a0 Enhances Agent-Based App Debugging

The release of Datasette Apps version 0.2a0 brings enhancements aimed at improving app creation and editing through Datasette Agent. A notable addition is the app_debug() tool, which enables agents to conduct smoke tests on apps by rendering them in an invisible iframe with opacity set to 0 and pointer-events disabled. This setup allows for executing agent-supplied JavaScript without user interference, facilitating the verification of app performance and measurement of element sizes. This tool utilizes the newly introduced context.browser_task() feature from datasette-agent 0.4a0. Simon Willison announced this update on August 1, 2026, and he also promotes a $10/month subscription for a curated email summary of significant LLM advancements.