# Tick Data Browser

> Public, read-only research-data catalog backed by Nextcloud. Large CSV files are exposed as metadata, small samples and deterministic byte chunks so an AI does not need to fetch a multi-gigabyte file at once.

## Primary URLs
- Human catalog: https://www.atto-hiro.com/tick-data-browser/
- AI guide: https://www.atto-hiro.com/tick-data-browser/ai/help.txt
- Catalog (text): https://www.atto-hiro.com/tick-data-browser/ai/catalog.txt
- Catalog (JSON): https://www.atto-hiro.com/tick-data-browser/ai/catalog.json
- Sitemap: https://www.atto-hiro.com/tick-data-browser/sitemap.xml

## Recommended workflow
1. Discover the target file in catalog.txt or catalog.json.
2. Read its meta.json to learn file size, time coverage, chunk size and chunk count.
3. Read sample.txt and tail.txt before deeper analysis.
4. Follow deterministic chunk URLs only as needed.
5. For date-oriented inspection, use the linked human file page and its year/month/seek links rather than inventing a new URL.

## Safety
- Read-only bridge.
- Public responses are size-capped and rate-limited.
- No upload, delete, move or Nextcloud credentials are exposed.