ABOUT FANTASY BUTLER
Built so you can stop running fantasy like a second job.
Fantasy Butler is the executor — software that manages lineups, waivers, FAAB, and inactive swaps across Yahoo, ESPN, CBS, and Sleeper. The roster work you keep missing while your life is happening.
THE ENGINE
Roster orchestration on schedule
A fantasy season is a part-time job. Thursday lineups, Wednesday waivers, Sunday morning inactive scrambles, FAAB allocations to win the right players without overpaying. Multi-league coordination when work weeks bleed into weekends.
Fantasy Butler handles that orchestration so you don't have to think about it.
- Lineups set before every game
- Waiver wire bids placed on the deadline
- FAAB allocations submitted to the right level
- Inactive-player swaps before kickoff
- Multi-league orchestration from one place
Across Yahoo, ESPN, CBS, and Sleeper.
WHO BUILDS THIS
Built by Mike Yan, after one too many missed Sundays
Managing a fantasy roster turned into a part-time job. Thursday lineups, Wednesday waivers, Sunday morning inactive scrambles. By Week 6, the people who care most are the ones who quietly stop caring.
Fantasy Butler is what I built so I could keep caring without the calendar tax.
Security
Built for roster access, payments, and trust.
Fantasy Butler handles fantasy-platform credentials and payment information. Both deserve real care.
Encryption
All connections to fantasybutler.com use TLS 1.3 with modern cipher suites. Data is encrypted at rest in Vercel's infrastructure.
Authentication
When Yahoo and other fantasy platforms with official APIs are connected, access happens through OAuth. You authorize us through the platform's own login flow, and you can revoke that authorization at any time without contacting us.
Payments
Payment information is processed by Stripe, which is PCI DSS Level 1 certified. We never store card numbers, CVV codes, or full bank details ourselves.
Operational Security
Internal access to user data is limited to what is necessary to operate and support the Service. We use industry-standard practices for credential management, dependency review, and incident response.
Responsible Disclosure
If you discover a security issue, please report it to hello@fantasybutler.com rather than disclosing it publicly. We will acknowledge within 72 hours and work with you toward a resolution.
Last security review: May 20, 2026.