Open Data Lab | Chopshopr

Chart

Chart Metric by category

Sample fit 0/100 fit

SQL Browser query plan

Implementation receipt

Protocol details stay below the evidence.

First inspect the dataset, chart, table, and query. Then audit the WebGL atlas, MCP Apps resource, and ChatKit handoff that make the surface portable.

Three.js/WebGL Selected-dataset atlas

Selected node NYC TLC taxi trips

Mobility / Parquet / 48GB / 91 sample-fit

ID: nyc-tlc-trips
X/Y/Z: pending
Radius: pending
Color: #c8ff62

Atlas highlights the selected dataset. Reduced-motion users get a still frame; WebGL failures use Canvas 2D fallback.

X Dataset size estimate

Y Sample fit

Color Domain

Atlas encodes size, sample fit, and domain instead of using decorative 3D placement.

ChatKit context Ready

Optional openai-chatkit bridge ready

Widget contract ui://open-data-lab

WebMCP registration Waiting for document.modelContext support.

Experimental and lab-scoped: registers local tools only when the browser exposes document.modelContext.registerTool. Outputs stay compact, source-backed, and bounded to the selected sample.

Sources

Dataset and runtime receipts.

DuckDB WASM overview DuckDB WASM data ingestion OpenAI Apps SDK MCP server Chrome WebMCP WebMCP imperative API NYC TLC Trip Record Data NOAA Storm Events CSV OpenAQ on AWS Census ACS PUMS USGS Earthquake Catalog API

Loading catalog

Dataset and runtime receipts.