Goal API is a football data API providing real-time sports information for developers. It offers live scores, fixtures, results, standings, lineups, match stats, team squads, player profiles, top scorers, head-to-head records, and highlights from over 1,000 competitions, including domestic leagues, cups, and international tournaments. The API supports REST and WebSocket protocols. REST endpoints provide data snapshots, while WebSocket connections push real-time updates like score changes, goals, cards, and substitutions without polling. Goal API provides SDKs for JavaScript/TypeScript, Python, Go, Dart/Flutter, and PHP, featuring authentication, retries, pagination, error handling, and WebSocket support. An OpenAPI spec enables client generation in other languages. Authentication uses bearer tokens, with rate limits tracked per key. The database includes detailed team, match, and league data.