Getting started with FantasyCast takes less than five minutes. Here's exactly how it works.
Step 1: Create your account
Head to getfantasycast.com and sign up. Once you're in, you'll land on your dashboard.
Step 2: Connect your league
Click Connect a League from the dashboard.
If you're on Sleeper
Choose Sleeper, enter your Sleeper username, and select the league you want to connect. That's it — no credentials needed. Sleeper's API is free and fully open.
If you're on ESPN
Choose ESPN, enter your League ID (found in your ESPN league URL: fantasy.espn.com/football/league?leagueId=XXXXXX), then paste your espn_s2 and SWID session cookies.
How to find your ESPN cookies:
- Go to fantasy.espn.com and make sure you're logged in
- Open DevTools: F12 on Windows, Cmd+Opt+I on Mac
- Click the Application tab (expand
»if you don't see it) - In the left sidebar: Storage → Cookies → https://www.espn.com
- Copy
espn_s2— it's a very long string - Copy
SWID— it looks like{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}, braces included
Once you've pasted them in, click Test Connection to verify, then Continue.
Step 3: Generate your first broadcast
After connecting your league, click Generate First Broadcast. FantasyCast will:
- Pull your league's matchup results, standings, and transactions from Sleeper or ESPN
- Build a context snapshot of the week — scores, storylines, waiver wire moves
- Feed it to a frontier AI language model to write a multi-host script
- Synthesize the audio with studio-grade AI voice models
This typically takes 60–90 seconds. You'll see the status update automatically.
Step 4: Listen and share
Once your broadcast is ready:
- Listen in the dashboard with the built-in audio player
- Read the script to see exactly what was said
- Copy the share link and drop it in your group chat — the share page is public and works for anyone
Season Replay
Already mid-season, or want broadcasts for a past season? Use the Replay tab on your league page. It imports historical week data for free, then lets you generate broadcasts for any past week (1 credit each).
Credits
One credit = one broadcast. Buy credits from the Credits page:
- $15 — 1 broadcast
- $120 — 10 broadcasts (half-season)
- $200 — 20 broadcasts (full season)
New accounts that joined the waitlist get 2 free credits automatically on sign-up.
Questions?
Reach us on the contact page — we read everything and actively support early leagues.