Run the background check before the invite.
A stranger wants your open spot. Manager Intel reads three seasons of their public Sleeper record — career ledger, rings, lineup reliability, activity — and hands you a verdict you can quote in league chat.
Why it exists
What Manager Intel actually does
- Capability
- Career ledger
- Capability
- Reliability score
- Capability
- Activity signal
- Price
- Free
- Data
- Read-only Sleeper API
- Auth
- Username only
- Scope
- Any Sleeper account
- 01
The career ledger
Win percentage, playoff rate, and championships from every classic-dynasty league they’ve played in the last three seasons — not the one league they told you about.
- 02
Lineup reliability, quantified
Did they set lineups in the leagues they already play in? Empty slots, bye-week starters, and starters who never played — audited week by week against real NFL data, a read you can trust more than "I’m super active, bro."
- 03
Week-by-week receipts
Every audited league gets a week strip — clean weeks, empty slots, bye-week starters, never-played starts — with the player and week named under each flag. The verdict cites its evidence.
- 04
The move wire, dated
Their last 10 moves — trades, waivers, FAAB bids — named and dated, plus how recently they touched any roster. The difference between a manager who works the wire and one who went dark in October.
- 05
Built for recruiting
Vet Reddit strangers, Discord randoms, and friends-of-friends in about a minute — before they’re inside your league wrecking the trade market.
How it works
Ninety seconds, start to verdict
Enter your Sleeper username
That’s your identity for the toolkit — read-only, no password.
Look up the candidate
Type any Sleeper username. Intel pulls three seasons of leagues, results, and transactions.
Read the report
Ledger, reliability, activity. Send the invite — or quietly lose their number.
Fine print
Questions, answered
Can I look up any Sleeper user?
Any public Sleeper username. If they’ve played on Sleeper, their leagues, results, and transaction history are readable through the public API.
Will they know I checked?
No. It’s read-only public data — no notifications, no contact, no trace.
What does the reliability score measure?
Whether they actually set their lineups: empty starting slots and other avoidable lineup failures across the seasons we can reconstruct, scored so chronic negligence stands out.
How is this different from Little Birds?
Manager Intel vets one stranger before the invite. Little Birds scouts everyone already in a league of yours, continuously. Recruiting tool versus standing intelligence network.