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Overview

The team logo endpoint fetches the logo image URL for the currently authenticated user’s fantasy team. This allows you to display custom team branding in your application.

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Authentication

Requires an active user session with a selected league and team.

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Request

This endpoint does not accept any query parameters. It automatically identifies the current user’s team based on session data.

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Response

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logo_url
string
The URL of the team’s logo image. Returns null if no logo is found or set for the team.

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Example Success Response

{
  "logo_url": "https://yahoofantasysports-res.cloudinary.com/image/upload/..."
}

{
  "logo_url": null
}

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Error Responses

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error
string
Error message describing what went wrong

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Possible Errors

  • 400 Bad Request - No league selected in session 
    {"error": "no league chosen"}
  • 500 Internal Server Error - Failed to parse team data 
    {"error": "could not find teams structure in league data"}
  • 500 Internal Server Error - Failed to fetch data from Yahoo API 
    {"error": "Error details"}

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Example Request

curl -X GET "https://your-domain.com/api/team_logo" \
  -H "Cookie: session=your-session-cookie"

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Implementation Details

This endpoint is implemented in main.py:776-831 and performs the following:
  1. Validates that a league is selected in the user’s session
  2. Calls the Yahoo Fantasy API: fantasy/v2/league/{league_key}/teams
  3. Iterates through all teams in the league to find the current user’s team by:
    • Matching the team name from session (team_name)
    • Checking for is_current_login flag in manager data
  4. Extracts the logo URL from the team’s team_logos array
  5. Returns the logo URL or null if no logo is found
  6. Logs errors and returns appropriate HTTP status codes on failure

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Team Identification

The endpoint uses multiple methods to identify the current user’s team:
  • Team Name Match: Compares team name from session data
  • Manager Login Status: Checks the is_current_login flag in manager data
This dual approach ensures reliable team identification even if team names have changed.

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Logo Structure

Yahoo’s team data includes a team_logos array. The endpoint:
  • Extracts the first logo from the array
  • Returns the url property from the logo object
  • Typically returns the “large” size variant

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Use Cases

  • Display team branding in dashboards
  • Show team logos in matchup views
  • Personalize user interface with team identity
  • Build league standings with team imagery

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Notes

  • Not all teams have custom logos; default/missing logos return null
  • Logo URLs are hosted by Yahoo’s CDN (typically Cloudinary)
  • URLs are persistent but may change if team logo is updated
  • Consider caching logo URLs to reduce API calls

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