# Game Event Replay

> Turn your own goals, points and notes into a running-score replay. Replay your own match events with named teams, score corrections, lead changes, tied scores and an explicit match duration.

Part of usefulweb.site (https://usefulweb.site/). Part of [Fieldday](https://fieldday.usefulweb.site/) (ownerApp: fieldday). Results are deterministic calculations from the inputs and the listed assumptions; the API returns exactly what the web page shows.

## Use it
- Human interface: https://fielddaygamereplay.usefulweb.site/ (interactive tool at https://fielddaygamereplay.usefulweb.site/tool)
- JSON API: POST https://fielddaygamereplay.usefulweb.site/api/v1/calculate with a JSON object of inputs (schema: https://fielddaygamereplay.usefulweb.site/api/v1/tool)
- OpenAPI: https://fielddaygamereplay.usefulweb.site/openapi.json
- MCP (Streamable HTTP): https://fielddaygamereplay.usefulweb.site/mcp - tool `fieldday_game_replay`

## Inputs
- events (table): Game events
- homeName (text): Home team
- awayName (text): Away team
- durationMinutes (number): Match duration (minutes, 0 = last event)

## Method
- Stable chronological ordering preserves input order at equal times. Home/away points accumulate, note events do not change the score, and corrections that produce a negative total are rejected.
- Lead changes compare successive non-tied leaders; ties count transitions from an unequal to an equal score. These describe the supplied event log, not a verified live feed.