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

> ## Agent Instructions
> Use Stable documentation by default. Honor an explicit Beta request or a URL under /docs/beta/. If the requested version conflicts with the installed CLI package or API origin, clarify the target before writing integration code.
> Pages under /docs/beta/ document Beta; other product pages document Stable. Keep the CLI package, commands, API origin, and credentials within the selected version. State the documentation version in your answer.
> For MCP search, always pass version: Stable or version: Beta. Unfiltered search mixes both versions. For filesystem reads, keep Beta queries under /beta/ and exclude /beta/ from Stable queries; discover paths before reading them.
> The public docs base is https://photon.codes/docs. Convert MCP page paths to public URLs under that base, preserving /beta/ when present. Read https://photon.codes/docs/skill.md for version selection and https://photon.codes/docs/llms.txt for the version indexes.

# messageEffectSchema

```typescript
const messageEffectSchema: z.ZodObject<{ content: z.ZodDiscriminatedUnion<[z.ZodObject<{ text: z.ZodString; type: z.ZodLiteral<"text"> }, z.core.$strip>, z.ZodObject<{ markdown: z.ZodString; type: z.ZodLiteral<"markdown"> }, z.core.$strip>, z.ZodObject<{ id: z.ZodString; mimeType: z.ZodString; name: z.ZodString; read: z.ZodFunction<z.ZodTuple<readonly [], null>, z.ZodPromise<z.ZodCustom<Buffer<ArrayBufferLike>, Buffer<ArrayBufferLike>>>>; size: z.ZodOptional<z.ZodNumber>; stream: z.ZodFunction<z.ZodTuple<readonly [], null>, z.ZodPromise<z.ZodCustom<ReadableStream<unknown>, ReadableStream<unknown>>>>; type: z.ZodLiteral<"attachment"> }, z.core.$strip>], "type">; effect: z.ZodString; type: z.ZodLiteral<"effect"> }, z.core.$strip>
```


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