League Loom

League Loom is a free, read-only connector designed to integrate fantasy sports leagues from ESPN, Sleeper, and Fantrax with AI tools such as Claude, ChatGPT, and other Model Context Protocol (MCP)-compatible platforms. By linking these fantasy leagues to AI assistants, the tool enables users to ask questions in plain language and receive answers that are grounded in live, up-to-date league data, eliminating the need for manual data entry or copy-pasting. League Loom supports football, basketball, baseball, and hockey leagues, allowing users to view and analyze information across all their teams and leagues in a single unified response.

The platform is tailored for fantasy sports managers who want to query their rosters, assess lineup risks, identify waiver opportunities, and receive matchup or trade advice using AI-powered assistants. Key features include the ability to surface the best available waiver additions, check for lineup risks such as bye-week starters or unfavorable matchups, evaluate weekly matchups and opponent strength, and synthesize standings, records, and projections to inform decision-making. League Loom also provides a prompt library with ready-made queries for common tasks like generating a weekly newsletter summarizing league activity, producing waiver wire reports, and conducting start/sit lineup checks across all managed teams.

Setup involves adding League Loom as a custom connector within supported AI tools by pasting the provided URL and completing a short wizard to select relevant teams. There are no API keys required, and each user connects their own leagues independently, ensuring privacy and avoiding conflicts between users. The service is explicitly read-only, meaning it never makes changes to lineups or league settings; it only retrieves and displays information. Credentials are managed through encrypted connections rather than being stored in a centralized database.

League Loom is available at no cost, with no paid tiers or subscription requirements. It is positioned as an AI connector for fantasy sports, specifically enabling real-time, personalized queries for users managing multiple leagues across supported platforms.