Built for category leagues
The best AI for fantasy basketball is one that knows your live roster and scoring format, not one guessing from generic rankings. League Loom connects your ESPN, Sleeper, or Fantrax NBA league directly to Claude and ChatGPT using free, read-only OAuth access, so it can see your actual team, category or points scoring, and standings. It's one of the only options that handles Fantrax category leagues, including college basketball and salary-cap data. It never sets lineups or makes moves; it only reads your league so the AI can answer.
Fantasy hoops lives in categories, and League Loom reads your real Fantrax and ESPN rosters to see exactly which cats you're winning and losing.
Fantrax runs the deepest NBA category and points leagues anywhere, and League Loom is the only connector that brings them into Claude or ChatGPT live.
Comparing your Fantrax roster's projected category output against this week's matchup.
| Cat | You | Opp |
|---|---|---|
| 3PM | 42 | 38 |
| FT% | .74 | .81 |
| AST | 26 | 34 |
| BLK | 5 | 4 |
Cross-referencing your category needs with available players in your Fantrax NBA league.
2 minutes
In Claude, ChatGPT, or any MCP tool, add a custom connector and paste the League Loom URL, then leave Client ID & Secret blank.
A quick wizard finds your leagues and lets you pick your team in each. No API keys.
Ask about your roster, waivers, matchups, and more, in plain language, across every league.
https://leagueloom.com/mcpAdd it as a custom connector, leave Client ID & Secret blank, then follow the quick wizard.
Why League Loom
Fantasy basketball advice is only useful if it's grounded in your actual league: your roster, your 9-cat or points scoring, and where you stand in the standings. Most AI fantasy tools give you generic player rankings that have no idea which categories you're punting or who's already on your bench. League Loom closes that gap by connecting directly to ESPN, Sleeper, or Fantrax through OAuth (with Dynamic Client Registration and PKCE, so there's no shared API key to manage), then reads your live league data into Claude or ChatGPT. That means it can tell you who's trending on the waiver wire, what your matchup scoreboard looks like by category, whether a player's hurt or resting, and, on Fantrax, what a trade does to your salary cap. It's also one of the few tools that supports Fantrax NBA and college basketball leagues at all. It stays strictly read-only: it never sets your lineup, submits a waiver claim, or executes a trade on its own.
FAQ
One that reads your live NBA roster and scoring categories. League Loom connects ESPN, Sleeper, and Fantrax leagues directly into Claude or ChatGPT.
Yes, Fantrax NBA is fully supported, which is rare among AI fantasy tools. Connect with your Secret ID or a league URL.
No. League Loom is strictly read-only. It analyzes your league but never makes moves or edits your account.
Generic ranking tools give the same advice to everyone regardless of your team. League Loom reads your actual connected league (roster, category or points scoring, standings, matchups) so answers reflect your real build, like a punt-FT% roster, instead of league-agnostic rankings.
Yes. For Fantrax leagues, League Loom can read salary and contract data in addition to rosters and standings, so it can factor cap space into questions about trades, adds, or drops in keeper and dynasty formats.
It can surface injury and rest-day status for players in your connected league, plus player age, so you have more context before you decide. It only reads and reports this data; it doesn't submit lineup changes itself.
Ready in two minutes
Free, read-only, and private. Connect once and ask anything.