datasette 1.0a33

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Release: datasette 1.0a33

This alpha is a significant step on the road to a stable 1.0, finally extending the ?_extra= pattern I introduced in Datasette 1.0a3 to cover queries and rows in addition to tables. That pattern is also now documented!

I wrote a whole lot more about the new release on the Datasette project blog: Datasette 1.0a33 with JSON extras in the API.

Because API explorer tools are almost free to build now I had Claude Fable 5 in Claude Code (for the plan) and GPT-5.5 xhigh in Codex Desktop (for the implementation) build me this custom extras API explorer to help demonstrate the feature:

Screenshot of a web application titled "Datasette extras explorer". A URL input field contains https://latest.datasette.io/fixtures/facetable.json with a teal Explore button next to it. Below, a left panel labeled EXTRAS (30) lists checkboxes: all_columns - All columns in the table, regardless of _col/_nocol filtering; column_types - Column type assignments for this table; columns (checked) - Column names returned by this query; count - Total count of rows matching these filters; count_sql - SQL query used to calculate the total count; custom_table_templates - Custom template names considered for this table; database - Database name; database_color - Color assigned to the database. A right panel labeled RESPONSE shows GET /fixtures/fac… with Copy JSON and Copy URL buttons, then a dark JSON viewer showing 200 - 9.9 KB - 114ms and JSON: "ok": true, "next": null, "columns": (highlighted array) "pk", "created", "planet_int", "on_earth", "state", "_city_id", "_neighborhood", "tags", "complex_array", "distinct_some_null", "n", "rows": list of objects.

Tags: projects, datasette, annotated-release-notes, ai-assisted-programming

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