Last updated: September 27, 2026. Operated by Mitchell Moses / OperatorZero.
The Fantasy Football Connector ("the connector") is a read-only agent connector for Meta Muse that lets you view fantasy football leagues hosted on Sleeper, ESPN, and Yahoo, and get heuristic advice about trades, waivers, and lineups. It cannot set lineups, propose or accept trades, add or drop players, or otherwise change anything in your leagues.
Public Sleeper and ESPN leagues require no account. Private ESPN leagues use cookies you provide; Yahoo leagues use OAuth tokens you authorize. Credentials are passed per request from your Secure Credentials Store: the connector is stateless and does not store them. You are responsible for keeping your own credentials safe and for revoking access at the provider (ESPN, Yahoo) if you stop using the connector.
The hosted connector offers a Free tier (1 league; roster, matchup, standings, and transaction views), a Pro tier ($8/month: unlimited leagues, premium advice tools, private leagues), and a Commissioner tier ($25/month per league: weekly recaps, power rankings, trade review, draft kit). Premium tools return a 402 payment-required response with a subscription URL when your tier does not include them; the connector never charges you itself — payment is handled by the linked checkout provider. Subscriptions are month-to-month and can be cancelled at any time; cancellation takes effect at the end of the billing period.
The connector source is published under the Apache License 2.0. You may self-host it for personal or commercial use under that license. Self-hosted instances do not include subscription management: premium gating resolves from your own configuration.
The connector fetches league data from Sleeper, ESPN, and Yahoo on demand and returns it to your agent session. It does not retain league data, credentials, or OAuth tokens between requests. Request logs contain method, path, status, and timing only — never request bodies or credentials. We do not sell personal data.
League data comes from third-party providers and may be delayed or incomplete. Advice tools (trade analysis, waiver targets, start/sit) are heuristic and informational only — not professional advice, not a guarantee of outcomes. Always verify consequential decisions in your league's official app.
This connector is not affiliated with, endorsed by, or sponsored by Sleeper, ESPN, or Yahoo.
Do not abuse the service (e.g., automated scraping at abusive rates, circumventing provider access controls). Rate limits apply. We may suspend access for abuse or non-payment of premium tiers.
The service is provided "as is" without warranties. To the maximum extent permitted by law, we are not liable for indirect or consequential damages, including fantasy league outcomes. Total liability is limited to amounts you paid for the service in the prior 12 months.
We may update these terms; material changes will be reflected in the "Last updated" date above. Continued use after changes constitutes acceptance.
Support: see the support URL in the directory listing or the repo README.