# DispatchBag `interface` in `types` ยท v0.13.0 The read and write surface of the per-dispatch bag. `DispatchContext` in `@seedcord/core` implements it. Declared here so [`RenderContext`](/packages/types/0.13.0/interfaces/render-context) can carry one without importing the concrete class. ```ts interface DispatchBag ``` ## Properties ### id ```ts readonly id: string ``` Unique to this one dispatch, and unique again the next time the same route runs. Every bus key this dispatch publishes carries it as `dispatchId`, so a store keyed on it lines up the dispatch, its writes, and any fault it raised. ### routeId ```ts readonly routeId: string ``` The dispatched handler as `kind:route`, for example `slash:daily` or `button:confirm`. ## Methods ### get ```ts get(key: Key): DispatchState[Key] | undefined ``` Read a key, `undefined` when nothing set it. ### require ```ts require( key: Key ): Exclude ``` Read a key that must be present, with `undefined` stripped from the result. ### set ```ts set(key: Key, value: DispatchState[Key]): void ``` Write a key for the rest of this dispatch to read.