How Oddsmyth Works
Oddsmyth is an AI co-manager for fantasy sports. It connects to your Yahoo or ESPN league (read-only access) and uses your roster, opponents, scoring settings, and available free agents to answer questions in plain English. For baseball it pulls live data from the MLB Stats API, FanGraphs Steamer rest-of-season projections, and Baseball Savant Statcast metrics; for fantasy football draft prep it runs on live 2026 Sleeper ADP with no league connection needed. Every recommendation is backed by real numbers.
Three steps to get started
Connect your league
Sign in with Yahoo (one-click OAuth) or ESPN (quick bookmarklet). Oddsmyth gets read-only access to your league data. It cannot change your lineup, make trades, or modify anything. You stay in control.
Ask a question
Type a question like you would ask a knowledgeable friend. 'Who should I start today?' 'Best free agents at SS?' 'Who should I draft at pick 8 in half-PPR?' Oddsmyth understands natural language.
Get a personalized answer
Oddsmyth checks your roster, your opponent, your league's scoring settings, and live data for your sport. It gives you a specific recommendation with the reasoning behind it, not a generic take.
Daily morning brief
Every game day at 9am ET, Oddsmyth checks your roster and sends a short email with your lineup status, one actionable tip, and a link to optimize. No login required to get value from Oddsmyth every morning.
On iPhone, and for DFS too
Get Oddsmyth on iPhone to have your daily brief pushed every morning with lineup-lock alerts. With Oddsmyth Pro, it also builds an optimized DraftKings MLB lineup right in chat, with value plays and the reasoning behind each pick. Projections and ownership are estimated, so it is an edge, not a guarantee.
What data does Oddsmyth use?
Your fantasy league (Yahoo or ESPN)
Roster, opponents, scoring categories, standings, waiver wire, matchup schedule
MLB Stats API
Live game scores, player season stats, game logs, probable pitchers, injury reports
FanGraphs Steamer projections
Rest-of-season batting and pitching projections, updated weekly
Baseball Savant Statcast
Advanced metrics including xBA, xSLG, xwOBA, exit velocity, barrel rate, and hard hit rate for deeper scouting
Sleeper NFL data
Live fantasy football average draft position (ADP) across scoring formats, current projections, and injury status for draft prep
Player ID mapping
Cross-references Yahoo, ESPN, MLB, FanGraphs, and Sleeper player IDs for accurate data matching
What Oddsmyth does NOT do
- It does not auto-set your lineup or make roster moves
- It does not guarantee winning results (it is a second opinion, not a crystal ball)
- It does not access your Yahoo password or store your credentials
- It does not share your league data with anyone
Pricing
Oddsmyth uses a credit-based model. Each in-depth analysis (lineup optimization, waiver wire recommendation, trade evaluation, matchup strategy) costs 1 credit. Quick factual questions like "When does the Yankees game start?" and follow-up questions in the same conversation are always free. You get 5 free credits when you sign up. Credit packs start at $4.99 for 10 credits. Credits never expire.
What is Oddsmyth?
Oddsmyth is an AI-powered fantasy sports assistant for baseball and football that connects to Yahoo and ESPN Fantasy leagues, or runs with no league at all for fantasy football draft prep. It accesses the user's roster, opponents, scoring settings, and available free agents to provide personalized recommendations for lineups, waiver wire pickups, trades, matchup strategy, and who to draft. For baseball the AI uses live data from the MLB Stats API, FanGraphs Steamer rest-of-season projections, and Baseball Savant Statcast advanced metrics (xBA, xSLG, xwOBA, exit velocity, barrel rate); for fantasy football it uses live Sleeper ADP and current projections. Oddsmyth was created in 2026 and is available at oddsmyth.ai.
Frequently Asked Questions
What data does Oddsmyth use?
Live stats and schedules from the official MLB Stats API, rest-of-season projections from FanGraphs Steamer, advanced Statcast metrics from Baseball Savant (xBA, xSLG, xwOBA, exit velocity, barrel rate), and your league’s roster, standings, and scoring from Yahoo or ESPN Fantasy. Every recommendation cites its data source.
Is my account safe?
We request read-only access to your fantasy leagues — we can’t change your lineup, make trades, or modify anything. Yahoo uses industry-standard OAuth tokens you can revoke anytime. ESPN credentials are encrypted at rest with AES-256. You stay in control.
What counts as a credit?
In-depth analysis uses 1 credit: lineup optimization, waiver recommendations, trade evaluations, and matchup strategy. Quick factual questions (game times, injury checks, scores) and follow-up questions in the same thread are always free.
Does it manage my team for me?
No — and that’s by design. Oddsmyth is a co-manager, not an autopilot. It gives you a second opinion with reasoning when you’re torn on a decision, but you still make every call. Think of it like a knowledgeable friend you can bounce ideas off of.
Which fantasy platforms do you support?
Yahoo Fantasy and ESPN are both fully supported. Yahoo connects via one-click OAuth. ESPN connects through a quick bookmarklet that takes about 30 seconds. Both give Oddsmyth read-only access to your league data.
How is Oddsmyth different from asking ChatGPT?
ChatGPT doesn't know your league. Oddsmyth connects to your Yahoo or ESPN team and answers with your exact roster, opponents, and scoring, using live 2026 stats and projections. It also shows its reasoning and publishes a season-long record of its calls.
Do I have to let it make moves for me?
No. Oddsmyth advises; you decide. It never makes a lineup change, add, drop, or trade on your behalf.
Does Oddsmyth do fantasy football?
Yes. Oddsmyth does fantasy football draft prep in chat, and it needs no league connection to start. Ask who to draft at your pick, in your scoring format, and it answers with live 2026 Sleeper ADP and current projections, so it reflects this year's players instead of last year's. You can also connect an ESPN fantasy football league for roster-aware questions. Fantasy baseball stays fully supported on Yahoo and ESPN.
Do I need a connected league for fantasy football draft prep?
No. Fantasy football draft prep runs with no league connected. Open the chat, tell it your pick and scoring format, and Oddsmyth answers with live 2026 Sleeper ADP and projections. Connecting an ESPN league is optional and adds roster-aware answers.
Is there an Oddsmyth iPhone app?
Yes. Oddsmyth is on the App Store for iPhone, with your daily brief pushed every morning and lineup-lock alerts. It works with the same Yahoo or ESPN league as the web app.
Can Oddsmyth build DraftKings DFS lineups?
Yes. Oddsmyth Pro builds an optimized DraftKings MLB lineup in chat, with value plays and the reasoning behind each pick. Projections are estimates and ownership is estimated, so it's an edge, not a guarantee.
Get a co-manager that knows your league.
5 free credits to start. No subscription required.
Now on iPhone.
Download on theApp Store