> ## Documentation Index
> Fetch the complete documentation index at: https://docs.4casters.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Notable, client-observable changes to the 4casters APIs.

This changelog records changes to the 4casters public APIs that are visible to integrators. Internal refactors, performance fixes that do not change behavior, and infrastructure changes are intentionally omitted.

Conventions:

* Newest entries first. Dates are ISO `YYYY-MM-DD`.
* Each entry is tagged with the affected API surface.
* Changes are grouped under `Added`, `Changed`, `Fixed`, `Deprecated`, or `Removed` (sections that don't apply are omitted).
* Breaking changes are tagged `Breaking`.

***

<Update label="2026-07-15" tags={["Streaming API", "User Feed"]}>
  ### Fixed

  * **`GET /v2/user/messages` replay now returns messages.** The v2 user feed replay endpoint previously always returned empty lists, so gap recovery after a dropped connection silently did nothing. Replayed messages arrive in exactly the shape the WebSocket delivers. See [Replaying missed messages](/pages/streaming/user-feed#replaying-missed-messages).
</Update>

<Update label="2026-04-28" tags={["Streaming API", "Price Feed"]}>
  ### Added

  * **Subscribe by `gameID`, `league`, or `sport` on the price feed.** Clients connected to `wss://streaming-api.4casters.io/price-stream` can now send JSON `subscribe`, `unsubscribe`, and `subscribeAll` commands to narrow the feed to specific games, leagues, or sports. See [Subscriptions](/pages/streaming/price-feed#subscriptions) for the full command shape and routing semantics.
  * **`parentGameID` fanout.** Subscribers of a parent `gameID` also receive updates for child games whose `parentGameID` matches (e.g. F5-MLB derivatives reach subscribers of the parent game).

  ### Changed

  * **Backwards compatible.** Clients that never send a subscribe command stay in broadcast-all mode and receive every update as before — no integration changes required.
</Update>