★ PLAYER HQ
YOUR GAME DAY
Live Sleeper matchup · local Power-Up playtest
SELECT YOUR MANAGER
This selection is remembered on this device. It is not a secure login.
YOUR MATCHUP
Loading matchup…
WEEKLY CHALLENGES CHECK BEFORE PLAYING
Challenge details have not been entered for this week. Check the official league Sheet before making Power-Up decisions.
YOUR POWER-UP HAND
RECENT LEAGUE ACTIVITY
⚡ THE ARENA
WEEK — // MATCHUPS
RAW SLEEPER SCORES + LOCAL SIMULATED POWER-UPS
★ INSERT POWER-UP ★
SEVEN MATCHUPS // SEVEN JERSEY COMBINATIONS
Connecting to Sleeper…
SLEEPER CONNECTION DIAGNOSTICS ▾
Checking your league API endpoints…
Click Select Diagnostics, then press Ctrl+C (Windows) or Command+C (Mac).
The public Sleeper API can read league data without a login. A local HTML file may encounter browser/network restrictions. The diagnostics distinguish a verified connection from demo mode.
Select a week to inspect its matchups
THE SCOREBOARD
Loading league matchups…
▣ THE CARD VAULT
POWER-UP INVENTORY
ARCADE CARD COLLECTION // BROWSE THE LIBRARY
Your hand is saved on this device. Awards, trade-ins, and scoring adjustments are local tests, not shared league transactions.
YOUR HAND · LOCAL PLAYTEST
Only Beast Mode, Toe Tappin', and Pinpoint have test calculations. Other cards can be viewed in the library but cannot be activated yet.
FULL POWER-UP LIBRARY
⚡ THE CHAOS FEED
RECENT ACTIVATIONS
LOCAL GAMEPLAY FEED
Your simulated awards and activations appear here. Only this browser sees them.
★ LEAGUE TABLE
THE STANDINGS
Loading standings from Sleeper…
▣ GAMEPLAY PROOF OF CONCEPT
THE TEST LAB
COMMISSIONER AWARDS + MANAGER ACTIVATIONS // LOCAL TEST
LOCAL SANDBOX — NOT REAL LEAGUE DATA. When Sleeper connects, this LAB uses the real weekly matchups and raw scores. Awards and adjustments are SIMULATED and saved only in this browser. They never change Sleeper or anyone else’s score.
BULK POWER-UP DISTRIBUTION
Select one or more recipients. Random awards are rolled separately for each manager.
RECIPIENTS0 selected
HAND MANAGEMENT
01 / SELECT MANAGER
02 / COMMISSIONER CONSOLE
Simulate a commissioner awarding a card. In a real app, this would require commissioner authentication.
03 / MATCHUP SIMULATOR
This shows the selected manager’s current-week matchup. Enter a test stat count and activate an owned card; the Arena shows the simulated score adjustment.
04 / TRANSACTION LOG
WEEKLY CHALLENGE EDITOR · LOCAL ONLY
These are commissioner-entered test descriptions, not automatically imported or verified official challenges.
SANDBOX BUILD V9 // Fan-made league companion • Sleeper provides fantasy data • LAB is a local simulation; no league data is changed.