Chandlery is an unofficial Chrome/Chromium helper extension for Fallen London
As long as your Fallen London tab is open, Chandlery will monitor and update the tab title with your current number of actions and Opportunity deck cards.
It will also optionally show desktop notifications when your candle or deck are full. The idea is to alert you that you start losing potential actions/opportunities because your pool is filled.
Installation: Chrome Web Store
Failbetter Games community forum topic
The extension works by observing an open Fallen London page, no requests to the server - it stops updating if you close your tab (and stops updating the deck count if the deck is not visible).
Feature requests are welcome, as long as they don't violate the "no automation" rule of Fallen London.
Credits:
Fallen London © Copyright Failbetter Games
Icon: by Icons8 from www.flaticon.com, licensed under CC BY 3.0