Simon Willison announced Datasette 1.0a33, an alpha release that extends the existing ?_extra= JSON API pattern beyond tables to cover queries and rows. The feature is now documented and presented as a significant step toward Datasette 1.0. Willison also used Claude Fable 5 in Claude Code and GPT-5.5 xhigh in Codex Desktop to build a custom extras API explorer demonstrating the new capability.
Simon Willison released Pasted File Editor, a browser prototype inspired by Claude's handling of large pasted text. Instead of filling the editor with a large paste, the tool turns the content into a file attachment. It also supports opening files directly, dragging files onto the interface, and displaying images as thumbnails. Codex desktop helped build the prototype.