Fantrax
League Loom supports Fantrax alongside ESPN and Sleeper. Check the sport and data coverage for your league.
The fantasy AI field guide
Flaim Fantasy vs League Loom
Flaim Fantasy is a free, read-only connector from an independent developer that lets ChatGPT, Claude and other assistants read ESPN, Yahoo and Sleeper leagues.
League Loom is a free, read-only alternative that adds Fantrax and connects ESPN without a browser extension, but not Yahoo. Add it on a computer, then ask in Claude's phone app.
Looking for more than two tools? See Best AI for fantasy football.
Last updated
Side by side
Compare the documented capabilities
Scroll the table sideways to compare all options.
| League Loom | Flaim | |
|---|---|---|
| Connector price | Free | Free |
| ESPN and Sleeper | Supported | Supported |
| Fantrax | Supported | Not listed in coverage docs |
| Yahoo | Not supported | Supported |
| Sports | Football, basketball, baseball and hockey; WNBA on ESPN; Sleeper is NFL and NBA only | Football, baseball, basketball and hockey on ESPN and Yahoo; football and basketball on Sleeper |
| ESPN setup | Public league URL or private-league cookies | Chrome extension for initial sync |
| Sleeper setup | Username | Username |
| Current roster moves | No move-submission tools | Read-only |
| AI setup | Custom connector in Claude, ChatGPT or another MCP client | ChatGPT and Claude directory listings; custom connector steps for Perplexity, Gemini, Grok and other MCP clients |
Published by League Loom from linked product documentation, checked October 3, 2026. Both connectors are free; your AI service may have separate requirements. No prediction-accuracy ranking is implied.
Sources checked . Published by League Loom, a competing connector. Flaim's home page, AI setup guide, sports coverage page, ESPN setup guide and privacy policy (last updated September 29, 2026) were checked October 3, 2026. These are documented features and policies, not an audit of Flaim's code or servers and not tested prediction accuracy, and either product's coverage can change.
League Loom coverage and tools · Flaim coverage and pricing · Flaim AI setup · Flaim sports and platforms · Flaim ESPN setup · Flaim privacy policy · Flaim code on GitHub
Find your fit
Choose by platform and setup
Yahoo
Flaim documents Yahoo sign-in. League Loom does not currently support Yahoo.
ESPN and Sleeper
Both offer these hosts. Compare the setup method and try one question using your own roster.
Both services supply league context for an AI assistant to analyze, and neither submits roster moves. League Loom is a free hosted connector with Fantrax support.
Flaim documents Yahoo support, which League Loom does not offer. For ESPN, League Loom accepts a league URL for public leagues and browser cookies for private leagues; Flaim documents a Chrome extension for the initial ESPN sync.
Both connect Sleeper with a username. Flaim links directory listings for ChatGPT and Claude, while League Loom is added as a custom connector.
Review the provider-specific steps before choosing, especially if you are starting from a phone.
Try League Loom
Bring your own league into the conversation
1
Add the connector
In Claude or any MCP tool, add a custom connector; in ChatGPT on the web, turn on developer mode and use the + button on the Plugins page. Give it a name and paste the League Loom URL as the server address.
2
Choose your leagues
Load your leagues in the setup wizard. Select a personal team for team-specific help, or leave it unselected for league overviews. No API keys.
3
Just ask
Ask about your roster, waivers, matchups, and more, in plain language, across every league.
Remote connector URL
https://leagueloom.com/mcpAdd this URL in your AI tool, then follow the guided setup.
On your phone? Send yourself this setup link to finish on a computer.
The basics
What is Flaim Fantasy?
Flaim Fantasy is a free connector, at flaim.app, that gives an AI assistant read access to your ESPN, Yahoo and Sleeper leagues so it can answer questions about your real roster, matchup, standings and waiver wire. It has no chat of its own: you ask in ChatGPT, Claude or another assistant, and that assistant analyzes the league data Flaim returns.
Platforms and sports
Football, baseball, basketball and hockey on ESPN and Yahoo; football and basketball on Sleeper. Fantrax is not listed.
How each league connects
ESPN needs Flaim's Chrome extension once, on a computer, to sync your ESPN session. Yahoo connects through Yahoo sign-in, and Sleeper through your username.
Where you ask
Flaim's docs say it is listed in ChatGPT's plugin directory and Claude's connector directory, with custom connector steps for Perplexity, Gemini and Grok.
Price
Free, with no subscription. Your AI service's own plan requirements still apply.
Flaim's home page · Flaim's sports coverage · Flaim's ESPN setup
Safety and privacy
Is Flaim Fantasy safe and legit?
Flaim publishes setup guides, a privacy policy and its code on GitHub, and its documentation describes read-only access. League Loom has not audited Flaim's code or servers, so this is what Flaim's own pages say, checked October 3, 2026, beside how League Loom handles the same things.
Read-only
Flaim's docs say it cannot make trades, add or drop players, edit lineups or change league settings; it updates only its own list of your leagues. League Loom also has no tools that change your leagues.
Your logins
Flaim never asks for your ESPN or Yahoo password. Its extension reads the espn_s2 and SWID session cookies when you choose Sync to Flaim, Yahoo uses sign-in tokens, and Sleeper uses only your username. League Loom uses a public ESPN league URL, or the same two cookies pasted at setup for a private league, without an extension.
Storage and logs
Flaim's policy says stored credentials are encrypted at rest, never sent to the AI and kept until you disconnect. It logs which tool a connected app used, not your question or the AI's answer, and keeps raw usage events for up to 90 days. League Loom seals your credentials into an encrypted connection token that you hold.
Who runs it
Flaim says it is an independent project built and maintained by one person, not affiliated with ESPN, Yahoo, Sleeper, OpenAI, Anthropic or Perplexity. League Loom is also independent and not affiliated with ESPN, Sleeper or Fantrax.
What this summary is not
- A security audit or test of Flaim's code or servers.
- A rating of either product's advice, which comes from your AI assistant.
- Current if Flaim changes its policy after October 3, 2026. Read its privacy policy before you connect.
Flaim's privacy policy · Flaim's code on GitHub · How League Loom handles credentials · Who builds League Loom
Before you connect
Questions, answered
What is Flaim Fantasy?
Flaim Fantasy, at flaim.app, is a free connector that lets ChatGPT, Claude and other assistants that accept custom connectors read your ESPN, Yahoo and Sleeper fantasy leagues. Its documentation says it is read-only, has no subscription and is an independent project not affiliated with ESPN, Yahoo, Sleeper, OpenAI, Anthropic or Perplexity.
Is Flaim Fantasy safe?
Flaim's privacy policy says it never collects your ESPN or Yahoo password, encrypts the ESPN session cookies, Yahoo sign-in tokens and Sleeper username it stores, never sends them to the AI and keeps them until you disconnect. It logs which tool a connected app used, not your question or the AI's answer. League Loom has not audited Flaim; this summarizes its policy as checked October 3, 2026.
Is Flaim Fantasy free?
Yes. Flaim's home page says it is free to use with no subscription. Your AI service may still have its own plan requirements, as it does for League Loom.
What is the main difference between League Loom and Flaim?
League Loom supports Fantrax alongside ESPN and Sleeper. Flaim documents Yahoo alongside ESPN and Sleeper. Both connect league data to AI assistants; their setup methods also differ.
Which service should I choose for Yahoo?
League Loom does not support Yahoo. Flaim lists Yahoo support in its documentation; check its current coverage and setup requirements.
Do I need a browser extension for ESPN?
League Loom uses a public league URL or your own private-league cookies without an extension. Flaim documents using its Chrome extension to sync ESPN leagues.
Which AI assistants does each one work with?
League Loom is added as a custom connector in Claude, ChatGPT or another MCP client that supports its hosted endpoint and sign-in. Flaim's setup guide links its ChatGPT and Claude directory listings and gives custom connector steps for Perplexity, Gemini, Grok and other MCP clients that support custom connectors.
Can League Loom submit a waiver claim?
No. All current League Loom tools retrieve or analyze data. You submit claims and other roster moves in your fantasy platform. Flaim also documents read-only access.
Is League Loom free?
Yes. The connector is free, with fair-use request budgets. Your chosen AI service may have separate plan and connector requirements.
When was this comparison last checked?
Flaim's home page, AI setup guide, sports coverage page, ESPN setup guide and privacy policy were checked on October 3, 2026. Product coverage and policies change, so confirm the current details on each site before you choose.
Before you connect a league, read how League Loom is built, what the privacy policy says is stored, the terms of service and the full FAQ, or check the press kit with key facts and who builds it.