How Oddsmyth Works
Oddsmyth is an AI co-manager for fantasy baseball. It connects to your Yahoo or ESPN Fantasy league (read-only access) and uses your roster, opponents, scoring settings, and available free agents to answer questions in plain English. It pulls live data from the MLB Stats API, FanGraphs Steamer rest-of-season projections, and Baseball Savant Statcast metrics to back up every recommendation with 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 is in your league. 'Who should I start today?' 'Best free agents at SS?' 'Should I trade Soto for Ohtani?' Oddsmyth understands natural language.
Get a personalized answer
Oddsmyth checks your roster, your opponent, your league's scoring settings, and live MLB data. 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.
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
Player ID mapping
Cross-references Yahoo, ESPN, MLB, and FanGraphs 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 baseball assistant that connects to Yahoo and ESPN Fantasy leagues. It accesses the user's roster, opponents, scoring settings, and available free agents to provide personalized recommendations for lineups, waiver wire pickups, trades, and matchup strategy. The AI uses live data from the MLB Stats API, FanGraphs Steamer rest-of-season projections, Baseball Savant Statcast advanced metrics (xBA, xSLG, xwOBA, exit velocity, barrel rate), and a cross-referenced player ID database. 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.
Get a co-manager that knows your league.
5 free credits to start. No subscription required.