LeagueLocker

Accounts

Connect your leagues

Stored only in this browser. Tokens are sent only to the platform, via this site's server.

Connected (0)

Nothing connected yet — start with Sleeper below.

SleeperFully supported

Sleeper

Enter your username — we find every league you're in, including Chopped leagues.

No password needed — Sleeper's league data is public and read-only.

Includes your Sleeper NFL Survivor and Pick'em pools automatically.

Add survivor & pick'em picks (optional)

Your Sleeper survivor and pick'em pools already show up with just your username: alive or out, teams you've used, standings and past picks. Sleeper only hides this week's picks until games kick off. To see those too, LeagueLocker needs your Sleeper sign-in.

How to add it (1 minute, on a computer)
  1. Show your bookmarks bar (Ctrl/⌘+Shift+B) and drag this button onto it: LeagueLocker: grab Sleeper sign-in
  2. Go to sleeper.com in the same browser and make sure you're signed in.
  3. Click the bookmark and press OK. LeagueLocker opens, checks the sign-in with Sleeper, and asks you to Save.

Can't drag? Make a bookmark by hand and paste this as its address:

Or, on sleeper.com, press F12 → Console, type JSON.parse(localStorage.token), press Enter, and paste the result here:

What this is: the same sign-in your browser uses on sleeper.com. It isn't limited to reading, so treat it like a password and only add it on your own device.

What LeagueLocker does with it: it stays only in this browser; nothing is stored on our server. It goes to Sleeper, through this site's server, in exactly two fixed read-only requests: “who am I” when you add it, and “my picks for this pool”. We never change anything on your Sleeper account.

Removing it: click Remove above, and it's deleted from this browser. Sleeper sign-ins last a long time (reportedly about a year). Signing out of Sleeper or changing your password may end it early (not verified).

ESPNSupported

ESPN

Paste your league link. Public leagues work instantly; private leagues need two cookies.

MFLSupported

MyFantasyLeague

Paste your league link and pick your team. Uses MFL's official export API.

Private league? Add your MFL API key

Log in to MFL, open your league, then go to Help → Developer's API in the top menu. MFL shows your personal API key for that league on that page. Public leagues don't need it.

FantraxSupported

Fantrax

Paste your league link and pick your team. Football, basketball, baseball and hockey.

The league must be viewable by the public (commissioners can enable this in Fantrax league settings).

CBSBeta

CBS Sports

CBS has no sign-in for outside apps, so you hand us the league token from your signed-in CBS page. One click with our bookmark helper.

How to get your CBS token (one time, on a computer)

CBS has no sign-in for outside apps. Instead, when you're signed in, CBS's own league page carries a league token (a long string starting with U2FsdGVkX1). LeagueLocker only needs that token — never your CBS password.

Option A — one-click helper (easiest)

  1. Show your bookmarks bar (Ctrl/⌘+Shift+B), then drag this button onto it: LeagueLocker: grab CBS token
  2. Open your CBS league (e.g. https://yourleague.football.cbssports.com) and sign in as usual.
  3. Click the LeagueLocker: grab CBS token bookmark. This page opens with your league and token filled in — tap Connect.

Can't drag? Create a bookmark manually and paste this as its URL:

Option B — browser console (30 seconds)

  1. On your signed-in CBS league page, press F12 (Mac: ⌥+⌘+J) and open the Console tab.
  2. Type CBSi.token and press Enter.
  3. Copy the long value it prints and paste it above (quotes are fine — we strip them).

Option C — Network tab

In DevTools → Network, reload the league page and filter for access_token. Click any request and copy the access_token value (pasting the whole request URL works too).

Good to know: the token is tied to your CBS login and one league — add each CBS league separately. It expires (CBS's old developer docs said after about 3 days; we haven't confirmed the current lifetime). When CBS rejects it, the league card will say so — click the bookmark again to refresh it.The token is stored only in this browser and sent only to CBS through this site's server. Needs a computer — phones can't run bookmarklets or DevTools easily.

Nothing works? Use Track a league manually below to keep the league on your dashboard with a link to CBS.

Tracked

Track a league manually

For any league we can't read automatically (survivor pools, CBS without a token, Yahoo for now). Update it whenever you like.

YahooComing soon

Yahoo Fantasy

Yahoo requires OAuth sign-in through a registered Yahoo developer app.

The sign-in flow is scaffolded on the server and turns on once the site owner adds Yahoo app credentials. Until then, track Yahoo leagues manually.

Other platforms

Where we stand on everything else. Anything without an API can be tracked manually above.

  • Yahoo Fantasy
    Sign in with Yahoo (OAuth 2.0). Needs a registered Yahoo developer app on the server. Track manually for now.
    Coming soon
  • NFL Fantasy
    NFL Fantasy stopped running season-long leagues in 2026; leagues migrated to ESPN. Connect the migrated league through ESPN.
    Moved
  • Underdog
    Best ball drafts & tournaments. No public API. Track entries manually with a deep link.
    Manual link
  • DraftKings
    DFS contests & best ball. No public API for user entries. Track manually.
    Manual link
  • FanDuel
    DFS contests. No public API for user entries. Track manually.
    Manual link
  • Sleeper Survivor / Pick'em
    Comes with your Sleeper username: alive/eliminated, week out, teams used, entrants left, pick'em points and rank. Sleeper hides the current week's picks until kickoff unless you add the optional Sleeper sign-in (a full-account token kept only in your browser).
    Live
  • ESPN Pigskin Pick'em / Eliminator
    ESPN's pick'em and survivor games. No documented API. Track manually.
    Manual link
  • Splash Sports / RunYourPool / OfficeFootballPool
    Survivor and pick'em pools. No public API. Track manually.
    Manual link
  • Fleaflicker
    Has a public read API — next adapter on the roadmap. Track manually for now.
    Coming soon

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