Eulerpool Google Sheets Add-on

Apps Script project providing EP_* custom functions (Sheets forbids dots in function names, so Excel's EP.PRICE is EP_PRICE here).

Quick install (any user, no Marketplace needed)

1. Open a Google Sheet → Extensions → Apps Script.
2. Replace the default Code.gs with this folder's Code.gs.
3. Project Settings → check "Show appsscript.json", replace it with this folder's version.
4. Save, reload the sheet, then use the new Eulerpool menu → "Set API key…".
5. =EP_PRICE("AAPL") in any cell.

Deploy with clasp (for maintaining a published add-on)

npm i -g @google/clasp
clasp login
cd addins/google-sheets
clasp create --type sheets --title "Eulerpool Financial Data"
clasp push

Workspace Marketplace publication

Requires a Google Cloud project + Workspace Marketplace SDK enabled + OAuth consent screen verification. The script itself is publication-ready: V8 runtime, minimal scopes (spreadsheets.currentonly, external_request, container.ui), key stored per-user in UserProperties, responses cached in CacheService (60s quotes / 15min fundamentals).