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    Interface FileOutputRef

    A lightweight reference to a file produced by an agent action (PDF, Excel, Word, etc.). Collected during execution and processed by AgentRunner into MJ: Artifacts after the run.

    Distinct from MediaOutput (images/audio/video embedded in the LLM conversation). FileOutputRef represents document files that are archived as versioned artifacts — they are never injected into the LLM context.

    5.22.0

    interface FileOutputRef {
        fileData?: string;
        fileId?: string;
        fileName: string;
        mimeType: string;
        sizeBytes?: number;
        visibility?: FileOutputVisibility;
    }
    Index

    Properties

    fileData? fileId? fileName mimeType sizeBytes? visibility?

    Properties

    fileData?: string

    Base64-encoded file content — present when the action returned the file inline

    fileId?: string

    MJ: Files record ID — present when the action already saved the file to MJStorage

    fileName: string

    Original filename (e.g. "report.xlsx")

    mimeType: string

    MIME type (e.g. "application/pdf")

    sizeBytes?: number

    File size in bytes

    visibility?: FileOutputVisibility

    How the artifact MJ creates for this file is shown. Always (default): a normal artifact, with a card on the message and the viewer. System Only: the artifact, its version and its download URL exist, but the chat keeps it out of the message cards (a host opts in with showSystemArtifacts). An action whose file is a DOWNLOAD — an export the user asked for and will open elsewhere — says so here, instead of the host having to hide a card that opens an empty viewer.

    6.1.0

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