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Elevate Your Sleeper Fantasy Football Experience

The Fantasy Football Toolkit is a lightweight, high-performance browser extension engineered for Sleeper fantasy league managers. It enriches standings with Max PF calculations, replaces noisy chat with a dedicated War Room panel, highlights breaking player updates, and streamlines trade negotiations.

Quick Start & Installation

Setup Guide

Getting Started

Installing and activating the toolkit takes less than a minute. Once installed, the extension seamlessly integrates directly into Sleeper web pages.

  • Automatic Activation: Runs automatically whenever you navigate to any league page on sleeper.com/leagues/*.
  • Zero Setup Required: Connects directly to Sleeper's public data APIs to fetch roster lineups and transaction records automatically.
  • Browser Compatibility: Works on Google Chrome, Brave, Microsoft Edge, Opera, and Mozilla Firefox.
Chrome Extension

Extension Options Popup

Access rules and global toggles anytime by clicking the extension icon in your browser toolbar.

  • Extension Badge: Shows quick status confirmation ("✅ Active").
  • Draft Rules Customization: Adjust 1.01 assignment logic and playoff eligibility pools on the fly.
  • Quick Links: Fast access to website support, developer updates, and store reviews.

Max PF Standings & Projected #1 Pick Tracking

Dynasty Essential

Automated Max PF Calculations

Max PF (Maximum Points For) calculates the maximum potential points your team could have scored if you started your optimal roster every single week. In dynasty leagues, Max PF is the gold standard for determining non-playoff draft order to eliminate tanking.

  • Injected Column: Appends a clean MAX PF data column directly into your league's Standings tab next to standard Points For (PF).
  • Playoff Cutoff Line: Injects a visible divider line separating playoff-bound teams from draft lottery contenders based on league settings.
  • Projected 1.01 Golden Badge: Automatically detects and highlights the team currently projected to secure the #1 overall rookie draft pick (1.01 PICK).

💡 How Draft Order Calculation Works

The toolkit queries historical weekly matchup statistics for every roster in your league, calculates optimal starting lineups for each completed week, and aggregates the season totals instantly without manual math.

UI Preview

Standings Table Injection

Here is how the enhanced league standings appear on Sleeper when the toolkit is active:

TEAM W-L PF MAX PF
1. Touchdown Dynasty 11-3 1,842.1 1,980.5
2. Gridiron Greats 9-5 1,710.4 1,825.0
--- 🔒 PLAYOFF CUTOFF LINE ---
7. Rebuilding Squad 3-11 1,210.0 1,305.2 1.01 PICK
8. Draft Capital FC 4-10 1,280.5 1,390.8

Integrated War Room Panel

Command Center

Replace Native Chat with War Room

The War Room replaces Sleeper's default right-hand chat window with a dedicated fantasy command panel designed for serious league management.

  • Floating Action Button (FAB): A persistent WAR ROOM toggle button appears in the bottom right corner of Sleeper. Click it anytime to switch between Sleeper Chat and the War Room.
  • State Memory: Remembers your preferred view (collapsed or expanded) across page refreshes.
  • Draft Safety: Automatically unmounts during live fantasy drafts to keep your draft room clutter-free.
Three Core Tabs

War Room Tools

  • 📰 Centralized Activity Feed: View league transactions in a single clean stream. Filter by All, Trades, Waivers, Free Agent pickups, and Roster Cuts with relative time badges.
  • 📋 Global Trade Block: View every player placed on the trade block across all league teams in one aggregated, searchable view.
  • 📝 Persistent Notepad: Keep private notes on trade targets, draft strategies, and player values. Automatically auto-saves to local storage and won't clear when you wipe browser cache.

1-Click Trade Block & Breaking News Alerts

Roster Management

1-Click Trade Block Controls

Put players on the trade block or take them off instantly without navigating deep into menus.

  • Roster Screen Toggle: A 1-click cart action button appears beside every player on your team roster view.
  • Player Card Integration: Dedicated trade block button injected into Sleeper player modal cards.
  • Instant Visual Confirmation: Real-time status update lets you know immediately if a player is listed on the block.
Breaking News

48-Hour Breaking News Badges

Never miss a practice report, injury update, or holdout announcement.

  • Visual Alert: Attaches a glowing amber NEWS badge directly next to player names across roster lists, matchup pages, and free agent pools.
  • Freshness Filter: Only highlights news updated within the last 48 hours.
  • Hover Tooltip: Hover over the news badge to see confirmation: "Breaking news within the last 48 hours!"

Draft Pick & Trade Clarity

Trade History

Enhanced Trade Grid Visuals

Reviewing historical trades on Sleeper can sometimes be confusing when draft picks or truncated player names are involved. The toolkit resolves this with targeted styling enhancements:

  • Acquired Draft Pick Styling: Highlight acquired future draft picks on the Trades screen with distinctive visual badges showing pick season, draft round, and original owner.
  • Player Name Tooltips: Adds automatic hover tooltips to any truncated player names so no information is cut off on smaller screens.

Configuration & Options Reference

Click the extension icon in your browser toolbar to open the options panel. Settings are synced automatically across your active browser sessions.

Setting Name Options / Values Default Description
Enable in Non-Dynasty Checkbox (True / False) False Enables Max PF calculations and standings column injection for redraft and keeper leagues.
1.01 Assignment Logic Lowest Max PF / Highest Max PF Lowest Max PF Determines which team qualifies for the projected #1 overall draft pick indicator.
Eligible Teams Pool Non-Playoff Teams Only / All Teams Non-Playoff Teams Only Restricts 1.01 pick tracking to teams outside the playoff cutoff boundary.

Frequently Asked Questions (FAQ)

Q: Why isn't the Max PF column showing in my league standings? ▼

Max PF is enabled by default for dynasty leagues. If you are in a redraft or keeper league, open the extension popup from your browser toolbar and check "Enable in Non-Dynasty". Also ensure that your league has completed at least one week of games so scoring data is available.

Q: Will my War Room Notepad notes be lost if I clear my browser history? ▼

No! The War Room Notepad uses persistent local extension storage (chrome.storage.local), which is separate from standard website cookies and browser cache. Your notes will remain intact unless you explicitly uninstall the extension.

Q: What happens to the War Room panel during a live fantasy draft? ▼

To avoid layout collisions and distraction during live drafting, the extension automatically unmounts the War Room panel and floating toggle button whenever you enter a live draft room URL (/draft).

Q: Does this extension store or transmit my Sleeper login credentials? ▼

Never. The extension operates entirely client-side inside your browser and only fetches public, read-only data via Sleeper's official REST API endpoints.

Need additional help or want to submit feedback?

Head over to our Main Support Page to submit a bug report, request a feature, or contact our team directly.