Datasette 1.0a33 Adds JSON API Extras for Queries and Rows
Simon Willison's Weblog·7 hours ago·Release
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.