Runtime Adapter Context

Provide assistant-ui runtime adapters through React context for model, attachment, speech, and feedback behavior.

API Reference

RuntimeAdapters

modelContext ?: ModelContextProvider

history ?: ThreadHistoryAdapter

load : () => Promise<ExportedMessageRepository & { state?: ReadonlyJSONValue; unstable_resume?: boolean; }>
resume ?: (options: ChatModelRunOptions) => AsyncGenerator<ChatModelRunResult, void, unknown>
append : (item: ExportedMessageRepositoryItem) => Promise<void>
update ?: (item: ExportedMessageRepositoryItem) => Promise<void>: Rewrites a previously appended message in place, keyed by its message id. Adapters that implement this let a runtime persist a run paused for tool approval and finalize the same message once the run resumes. An update may arrive for an id whose earlier write failed; treat it as an upsert keyed on the message id rather than assuming the entry exists.
delete ?: (items: ExportedMessageRepositoryItem[]) => Promise<void>
withFormat ?: <TMessage, TStorageFormat extends Record<string, unknown>>(formatAdapter: MessageFormatAdapter<TMessage, TStorageFormat>) => GenericThreadHistoryAdapter<TMessage>: Required when used with `useAISDKRuntime` / `useChatRuntime`.

attachments ?: AttachmentAdapter

accept : string
add : (state: { file: File; }) => Promise<PendingAttachment> | AsyncGenerator<PendingAttachment, void>
remove : (attachment: Attachment) => Promise<void>
send : (attachment: PendingAttachment) => Promise<CompleteAttachment>