uiMessagesToWire

function uiMessagesToWire(messages, options?): WireMessage[];

Defined in: packages/ai/src/utilities/ag-ui-wire.ts:101

Serialize TanStack UIMessages and ModelMessages into the AG-UI RunAgentInput.messages wire shape. Anchors are spec-only (id, role, name, content, toolCalls, metadata). Tool results and thinking parts on assistant messages are additionally emitted as fan-out {role:'tool',...} and {role:'reasoning',...} entries for strict AG-UI server consumers. Set includeSnapshotStructuredOutput to retain complete structured-output metadata for UI snapshots. Set includeActivity to emit AG-UI ActivityMessage rows (MESSAGES_SNAPSHOT only — default omit so RunAgentInput never carries activity). An assistant message whose parts leave the default block order goes out as several rows in the real order (see TanStackMessageMetadata.continues). A tool result also ends a row, and its tool row follows that row.