> For a complete page index of the Captain API documentation, fetch https://docs.captain.dev/llms.txt?excludeSpec=true

# Spreadsheet & Media Provenance

* **Spreadsheet provenance**: chunks from XLSX and CSV files carry sheet name plus row and column ranges in the v2 query response
* **Structured media time**: video and audio segments expose `startSec` and `endSec` instead of a label