> ## Documentation Index > Fetch the complete documentation index at: https://veryfront.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # veryfront/chat > Chat UI components and streaming hooks. ## Import ```ts theme={null} import { Chat, useChat, useAgent, AgentCard, Message, buildChatStreamChunkMessageMetadata, } from "veryfront/chat"; ``` ## Examples ### Basic chat (preset) ```tsx theme={null} import { Chat, useChat } from "veryfront/chat"; export default function Page() { const chat = useChat(); return ( ); } ``` ### Custom layout (composition) ```tsx theme={null} import { Chat, useChat } from "veryfront/chat"; export default function Page() { const chat = useChat(); return ( ); } ``` ### Per-message control (compound) ```tsx theme={null} import { Message } from "veryfront/chat"; ``` ## Type Reference ### `UseChatOptions` Options accepted by use chat. | Property | Type | Description | Source | | ------------------ | ----------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- | | `api?` | `string` | AG-UI endpoint. Defaults to "/api/ag-ui". | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L54) | | `transport?` | `"ag-ui"` | Streaming response protocol used by the endpoint. AG-UI is the default. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L56) | | `initialMessages?` | `ChatMessage[]` | Pre-populated messages | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L57) | | `body?` | Record\ | Extra body fields sent with each request | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L58) | | `headers?` | Record\ | Custom request headers | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L59) | | `credentials?` | `RequestCredentials` | Fetch credentials mode | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L60) | | `model?` | `string` | Override model at runtime (e.g. "openai/gpt-4o", "Anthropic/claude-sonnet-4-5-20250929") | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L62) | | `onResponse?` | (response: Response) => void | Raw response callback | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L63) | | `onFinish?` | (message: ChatMessage) => void | Completion callback | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L64) | | `onError?` | (error: Error) => void | Error callback | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L65) | | `onToolCall?` | (arg: OnToolCallArg) => void \| Promise\ | Tool call handler for client-side execution | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L66) | ### `UseChatResult` Result returned from use chat. | Property | Type | Description | Source | | ------------------- | ------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------ | | `messages` | `ChatMessage[]` | All messages in the conversation | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L77) | | `input` | `string` | Current input value | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L78) | | `isLoading` | `boolean` | Whether a request is in flight | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L79) | | `error` | `Error \| null` | Last error (if any) | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L80) | | `model` | `string \| undefined` | Current model override (undefined = use agent default) | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L82) | | `activeModel` | `string \| undefined` | The actual model being used after auto-upgrade (e.g. "Anthropic/claude-sonnet-4-20250514") | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L84) | | `inferenceMode` | `InferenceMode` | Where inference is currently happening | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L86) | | `setInput` | (input: string) => void | Set input value | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L87) | | `setModel` | (model: string \| undefined) => void | Change the model for subsequent requests | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L89) | | `sendMessage` | (message: \{ text: string }) => Promise\ | Send a message programmatically | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L90) | | `editMessage` | (messageId: string, newText: string) => Promise\ | Edit a user message and resubmit - truncates history to that point | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L92) | | `getBranches` | (messageId: string) => BranchInfo | Get branch info for a message (returns { current, total }; total=1 if no branches) | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L94) | | `switchBranch` | (messageId: string, branchIndex: number) => void | Switch to a different branch at a given message | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L96) | | `reload` | () => Promise\ | Re-send last user message | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L97) | | `stop` | () => void | Abort current request | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L98) | | `setMessages` | (messages: ChatMessage\[]) => void | Replace message history | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L99) | | `addToolOutput` | (output: ToolOutput) => void | Submit client-side tool result | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L100) | | `data?` | `unknown` | Extra data from server response | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L101) | | `handleInputChange` | (e: React.ChangeEvent\) => void | Bind to input onChange | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L102) | | `handleSubmit` | (e?: React.FormEvent) => Promise\ | Submit current input | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L103) | | `onChange` | (e: React.ChangeEvent\) => void | Alias for `handleInputChange` - matches `ChatProps.onChange` for easy spreading | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L105) | | `onSubmit` | (e?: React.FormEvent) => Promise\ | Alias for `handleSubmit` - matches `ChatProps.onSubmit` for easy spreading | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L107) | | `onModelChange` | (model: string \| undefined) => void | Alias for `setModel` - matches `ChatProps.onModelChange` for easy spreading | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L109) | ### `UseAgentOptions` Options accepted by use agent. | Property | Type | Description | Source | | --------------- | ---------------------------------------------------------- | ---------------------------------- | ------------------------------------------------------------------------------------------------ | | `agent` | `string` | Agent ID or endpoint | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L8) | | `onToolCall?` | (toolCall: ToolCall) => void | Callback when tool is called | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L11) | | `onToolResult?` | (toolCall: ToolCall, result: unknown) => void | Callback when tool result received | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L14) | | `onError?` | (error: Error) => void | Callback when error occurs | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L17) | ### `UseAgentResult` Result returned from use agent. | Property | Type | Description | Source | | ----------- | ---------------------------------------------- | ----------------------- | ------------------------------------------------------------------------------------------------ | | `messages` | `AgentMessage[]` | Message history | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L23) | | `toolCalls` | `ToolCall[]` | Active tool calls | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L26) | | `status` | `AgentStatus` | Agent status | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L29) | | `thinking?` | `string` | Thinking/reasoning text | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L32) | | `invoke` | (input: string) => Promise\ | Invoke the agent | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L35) | | `stop` | () => void | Stop agent execution | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L38) | | `isLoading` | `boolean` | Loading state | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L41) | | `error` | `Error \| null` | Error state | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L44) | ## Exports ### Components | Name | Description | Source | | --------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------ | | `AgentCard` | Render agent card. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/agent-card.tsx#L37) | | `AttachmentPill` | Render attachment pill. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/attachment-pill.tsx#L41) | | `BranchPicker` | Render branch picker. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/branch-picker.tsx#L13) | | `Chat` | Render chat. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/index.tsx#L262) | | `ChatComponents` | Render chat components. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/index.tsx#L517) | | `ChatComposer` | Render chat composer. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-composer.tsx#L54) | | `ChatContextProvider` | Render chat context provider. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/chat-context.tsx#L85) | | `ChatEmpty` | Render chat empty. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-empty.tsx#L26) | | `ChatIf` | Render chat if. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-if.tsx#L19) | | `ChatMessageList` | Render chat message list. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-message-list.tsx#L75) | | `ChatRoot` | Render chat root. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-root.tsx#L70) | | `ChatSidebar` | Render chat sidebar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/sidebar.tsx#L136) | | `ChatWithSidebar` | Render chat with sidebar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L136) | | `ComposerContextProvider` | Render composer context provider. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/composer-context.tsx#L66) | | `ConversationEmptyState` | State for conversation empty. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L71) | | `ConversationScrollButton` | Render conversation scroll button. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L110) | | `DEFAULT_CHAT_STREAM_IDLE_TIMEOUT_MS` | Default value for chat stream idle timeout ms. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L4) | | `DEFAULT_CHAT_STREAM_TOOL_RUNNING_TIMEOUT_MS` | Default value for chat stream tool running timeout ms. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L6) | | `DropZoneOverlay` | Render drop zone overlay. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/drop-zone.tsx#L11) | | `ErrorBanner` | Render error banner. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/error-banner.tsx#L19) | | `FadeIn` | Render fade in. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/animations.tsx#L37) | | `InferenceBadge` | Render inference badge. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/inference-badge.tsx#L10) | | `InlineCitation` | Render inline citation. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/inline-citation.tsx#L14) | | `Loader` | Render loader. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/animations.tsx#L14) | | `Message` | Message shape for message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/message.tsx#L343) | | `MessageActions` | Render message actions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-actions.tsx#L17) | | `MessageContextProvider` | Render message context provider. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/message-context.tsx#L56) | | `MessageEditForm` | Render message edit form. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-edit-form.tsx#L12) | | `MessageFeedback` | Render message feedback. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-feedback.tsx#L19) | | `ModelAvatar` | Render model avatar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/model-avatar.tsx#L65) | | `ModelSelector` | Render model selector. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/model-selector.tsx#L57) | | `QuickActions` | Render quick actions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/quick-actions.tsx#L20) | | `ReasoningCard` | Render reasoning card. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/reasoning.tsx#L14) | | `RichCodeBlock` | Render rich code block. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/code-block.tsx#L14) | | `Shimmer` | Render shimmer. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/animations.tsx#L5) | | `SkillBadge` | Render skill badge. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/skill-badge.tsx#L18) | | `Sources` | Render sources. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/sources.tsx#L20) | | `StandaloneMessage` | Render a standalone chat message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/message.tsx#L46) | | `StepIndicator` | Render step indicator. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/step-indicator.tsx#L13) | | `StreamingMessage` | Message shape for streaming. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/message.tsx#L151) | | `Suggestion` | Render suggestion. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L14) | | `Suggestions` | Render suggestions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L49) | | `TabSwitcher` | Render tab switcher. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/tab-switcher.tsx#L28) | | `ThreadListContextProvider` | Render thread list context provider. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/thread-list-context.tsx#L47) | | `ToolCallCard` | Tool call card component - renders tool invocations with parameters and results Styled to match AI Elements ([https://ai-sdk.dev/elements](https://ai-sdk.dev/elements)) | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/tool-ui.tsx#L140) | | `ToolStatusBadge` | Render tool status badge. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/tool-ui.tsx#L45) | | `UploadsPanel` | Render uploads panel. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/uploads-panel.tsx#L30) | ### Functions | Name | Description | Source | | ------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | | `buildChatStreamChunkMessageMetadata` | Builds chat stream chunk message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L142) | | `createChatStreamWatchdog` | Create chat stream watchdog. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L156) | | `createChatStreamWatchdogState` | State for create chat stream watchdog. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L49) | | `dedupeChatUiMessageChunks` | Dedupe chat UI message chunks. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L192) | | `downloadMarkdown` | Download messages as a .md file. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/export.ts#L64) | | `exportAsMarkdown` | Convert chat messages to a markdown string. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/export.ts#L12) | | `extractChatMessageMetadata` | Extract chat message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L136) | | `extractSourcesFromParts` | Extract sources from tool result parts. Looks for `documents` arrays in tool outputs and maps them to Source\[]. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L156) | | `getNextChatStreamWatchdogState` | State for get next chat stream watchdog. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L81) | | `getTextContent` | Get text content from chat message parts | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L15) | | `groupPartsInOrder` | Group consecutive parts for ordered rendering Returns an array of groups, each containing either consecutive text parts, a tool part, or a reasoning part | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L100) | | `isHeartbeatOnlyMetadataChunk` | Check whether a chunk only carries heartbeat metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L151) | | `isLongRunningToolRunning` | Check whether a long-running tool is active. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L69) | | `isReasoningPart` | Check if a part is a reasoning part | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L81) | | `isSkillToolPart` | Check if a tool part is a skill-related tool. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L76) | | `isToolPart` | Check if a part is a tool part | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L31) | | `mapHostedStreamPartToChatUiChunks` | Map hosted stream part to chat UI chunks. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/hosted-ui-chunk-mapping.ts#L219) | | `normalizeChatMessageMetadata` | Normalizes chat message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L111) | | `normalizeChatUiMessageChunk` | Normalizes chat UI message chunk. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L161) | | `normalizeChatUiMessageStream` | Normalizes chat UI message stream. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L254) | | `useAgent` | React hook for agent. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L48) | | `useChat` | | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/use-chat.ts#L75) | | `useChatContext` | Context for use chat. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/chat-context.tsx#L69) | | `useChatContextOptional` | React hook for chat context optional. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/chat-context.tsx#L80) | | `useChatErrorHandler` | Handler for use chat error. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/error-boundary.tsx#L93) | | `useCompletion` | useCompletion hook for single text generation | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-completion.ts#L55) | | `useComposerContext` | Context for use composer. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/composer-context.tsx#L50) | | `useComposerContextOptional` | React hook for composer context optional. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/composer-context.tsx#L61) | | `useMessageContext` | Context for use message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/message-context.tsx#L40) | | `useMessageContextOptional` | React hook for message context optional. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/message-context.tsx#L51) | | `useStreaming` | React hook for streaming. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-streaming.ts#L41) | | `useThreadListContext` | Context for use thread list. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/thread-list-context.tsx#L31) | | `useThreadListContextOptional` | React hook for thread list context optional. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/thread-list-context.tsx#L42) | | `useThreads` | React hook for threads. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/hooks/use-threads.ts#L84) | | `useVoiceInput` | Input payload for use voice. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-voice-input.ts#L101) | ### Classes | Name | Description | Source | | ---------------------------- | ----------------------------------------- | ---------------------------------------------------------------------------------------------------------------- | | `ChatErrorBoundary` | Implement chat error boundary. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/error-boundary.tsx#L17) | | `ChatStreamIdleTimeoutError` | Error shape for chat stream idle timeout. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L33) | ### Types | Name | Description | Source | | ------------------------------------------ | ---------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ | | `AgentCardProps` | Props accepted by agent card. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/agent-card.tsx#L13) | | `AgentTheme` | Public API contract for agent theme. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/theme.ts#L160) | | `AttachmentInfo` | Public API contract for attachment info. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/attachment-pill.tsx#L5) | | `AttachmentPillProps` | Props accepted by attachment pill. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/attachment-pill.tsx#L15) | | `BranchInfo` | Public API contract for branch info. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L70) | | `BranchPickerProps` | Props accepted by branch picker. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/branch-picker.tsx#L5) | | `BuildChatStreamChunkMessageMetadataInput` | Input payload for build chat stream chunk message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/chat-ui-message-helpers.ts#L9) | | `ChatComposerProps` | Props accepted by chat composer. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-composer.tsx#L19) | | `ChatContextValue` | Public API contract for chat context value. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/chat-context.tsx#L20) | | `ChatDynamicToolPart` | Public API contract for chat dynamic tool part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L55) | | `ChatEmptyProps` | Props accepted by chat empty. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-empty.tsx#L13) | | `ChatErrorBoundaryProps` | Props accepted by chat error boundary. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/error-boundary.tsx#L4) | | `ChatFinishReason` | Public API contract for chat finish reason. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L150) | | `ChatIfProps` | Props accepted by chat if. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-if.tsx#L12) | | `ChatMessage` | Message shape for chat. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L88) | | `ChatMessageListProps` | Props accepted by chat message list. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-message-list.tsx#L44) | | `ChatMessageMetadata` | Public API contract for chat message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L134) | | `ChatMessageMetadataUsage` | Public API contract for chat message metadata usage. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L97) | | `ChatMessagePart` | Public API contract for chat message part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L78) | | `ChatProps` | Props accepted by chat. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/index.tsx#L194) | | `ChatReasoningPart` | Chat message part that carries reasoning text. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L18) | | `ChatRootProps` | Props accepted by chat root. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/chat-root.tsx#L25) | | `ChatSidebarProps` | Props accepted by chat sidebar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/sidebar.tsx#L7) | | `ChatStepPart` | Public API contract for chat step part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L66) | | `ChatStreamEvent` | Event emitted for chat stream. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L165) | | `ChatStreamWatchdogOptions` | Options accepted by chat stream watchdog. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L24) | | `ChatStreamWatchdogPhase` | Public API contract for chat stream watchdog phase. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L9) | | `ChatStreamWatchdogState` | State for chat stream watchdog. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/stream-watchdog.ts#L16) | | `ChatTab` | Public API contract for chat tab. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/tab-switcher.tsx#L13) | | `ChatTextPart` | Chat message part that carries text. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L11) | | `ChatTheme` | Public API contract for chat theme. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/theme.ts#L121) | | `ChatToolPart` | Public API contract for chat tool part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L35) | | `ChatToolResultPart` | Chat message part that carries a tool result. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L46) | | `ChatToolState` | State for chat tool. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L27) | | `ChatUiMessageChunk` | Public API contract for chat UI message chunk. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L342) | | `ChatWithSidebarAttachmentConfig` | Configuration used by chat with sidebar attachment. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L60) | | `ChatWithSidebarChatController` | Public API contract for chat with sidebar chat controller. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L18) | | `ChatWithSidebarFeatureConfig` | Configuration used by chat with sidebar feature. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L87) | | `ChatWithSidebarGroupedProps` | Props accepted by chat with sidebar grouped. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L114) | | `ChatWithSidebarMessageConfig` | Configuration used by chat with sidebar message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L79) | | `ChatWithSidebarModelConfig` | Configuration used by chat with sidebar model. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L55) | | `ChatWithSidebarProps` | Props accepted by chat with sidebar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L133) | | `ChatWithSidebarQuickActionsConfig` | Configuration used by chat with sidebar quick actions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L71) | | `ChatWithSidebarSidebarConfig` | Configuration used by chat with sidebar sidebar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L44) | | `ChatWithSidebarTabsConfig` | Configuration used by chat with sidebar tabs. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L97) | | `ChatWithSidebarVoiceConfig` | Configuration used by chat with sidebar voice. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat-with-sidebar.tsx#L108) | | `ChildRunAudit` | Public API contract for child run audit. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L122) | | `ChildRunAuditToolCall` | Public API contract for child run audit tool call. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L107) | | `ChildRunAuditToolResult` | Result returned from child run audit tool. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L114) | | `CodeBlockProps` | Props accepted by code block. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/code-block.tsx#L6) | | `ComposerContextValue` | Public API contract for composer context value. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/composer-context.tsx#L16) | | `ConversationEmptyStateProps` | Props accepted by conversation empty state. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L62) | | `ConversationScrollButtonProps` | Props accepted by conversation scroll button. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L103) | | `DropZoneOverlayProps` | Props accepted by drop zone overlay. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/drop-zone.tsx#L5) | | `ErrorBannerProps` | Props accepted by error banner. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/error-banner.tsx#L12) | | `FeedbackValue` | Public API contract for feedback value. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-feedback.tsx#L5) | | `HostedStreamPartForUiChunkMapping` | Public API contract for hosted stream part for UI chunk mapping. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/hosted-ui-chunk-mapping.ts#L30) | | `HostedUiChunkMappingOptions` | Options accepted by hosted UI chunk mapping. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/hosted-ui-chunk-mapping.ts#L4) | | `InferenceBadgeProps` | Props accepted by inference badge. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/inference-badge.tsx#L5) | | `InferenceMode` | Where inference is happening. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L15) | | `InlineCitationProps` | Props accepted by inline citation. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/inline-citation.tsx#L6) | | `MessageActionsProps` | Props accepted by message actions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-actions.tsx#L9) | | `MessageContextValue` | Public API contract for message context value. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/message-context.tsx#L17) | | `MessageEditFormProps` | Props accepted by message edit form. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-edit-form.tsx#L5) | | `MessageFeedbackProps` | Props accepted by message feedback. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/message-feedback.tsx#L8) | | `MessageProps` | Props accepted by message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/message.tsx#L7) | | `MessageRootProps` | Props accepted by message root. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/message.tsx#L58) | | `ModelAvatarProps` | Props accepted by model avatar. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/composition/model-avatar.tsx#L14) | | `ModelOption` | A "provider/model" value and its display label. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/model-selector.tsx#L15) | | `ModelSelectorProps` | Props accepted by ``. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/model-selector.tsx#L29) | | `OnToolCallArg` | Public API contract for on tool call arg. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L42) | | `PartGroup` | Part group types for ordered rendering | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/utils/message-parts.ts#L90) | | `QuickAction` | Public API contract for quick action. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/quick-actions.tsx#L5) | | `QuickActionsProps` | Props accepted by quick actions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/quick-actions.tsx#L13) | | `SkillBadgeProps` | Props accepted by skill badge. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/skill-badge.tsx#L12) | | `Source` | Public API contract for source. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/sources.tsx#L5) | | `SourcesProps` | Props accepted by sources. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/sources.tsx#L13) | | `StepIndicatorProps` | Props accepted by step indicator. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/step-indicator.tsx#L6) | | `StreamingMessageProps` | Props accepted by streaming message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/message.tsx#L136) | | `SuggestionProps` | Props accepted by suggestion. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L6) | | `SuggestionsProps` | Props accepted by suggestions. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/empty-state.tsx#L42) | | `TabSwitcherProps` | Props accepted by tab switcher. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/tab-switcher.tsx#L16) | | `Thread` | Public API contract for thread. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/hooks/use-threads.ts#L6) | | `ThreadListContextValue` | Public API contract for thread list context value. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/contexts/thread-list-context.tsx#L15) | | `ToolOutput` | Output from tool. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L33) | | `UploadedFile` | Public API contract for uploaded file. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/uploads-panel.tsx#L6) | | `UploadsPanelProps` | Props accepted by uploads panel. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/components/uploads-panel.tsx#L15) | | `UseAgentOptions` | Options accepted by use agent. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L6) | | `UseAgentResult` | Result returned from use agent. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-agent.ts#L21) | | `UseChatOptions` | Options accepted by use chat. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L52) | | `UseChatResult` | Result returned from use chat. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-chat/types.ts#L76) | | `UseCompletionOptions` | Options accepted by use completion. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-completion.ts#L11) | | `UseCompletionResult` | Result returned from use completion. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-completion.ts#L32) | | `UseStreamingOptions` | Options accepted by use streaming. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-streaming.ts#L5) | | `UseStreamingResult` | Result returned from use streaming. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-streaming.ts#L20) | | `UseThreadsOptions` | Options accepted by use threads. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/hooks/use-threads.ts#L19) | | `UseThreadsResult` | Result returned from use threads. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/react/components/chat/chat/hooks/use-threads.ts#L25) | | `UseVoiceInputOptions` | Options accepted by use voice input. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-voice-input.ts#L4) | | `UseVoiceInputResult` | Result returned from use voice input. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/agent/react/use-voice-input.ts#L28) | ## Deep imports These import paths group focused functionality under this module. Each is a separate barrel; import only what you need. ### `veryfront/chat/message-prep` ```ts theme={null} import { compactForStep, compressTurn, dedupeToolHistory } from "veryfront/chat/message-prep"; ``` #### Functions | Name | Description | Source | | -------------------------------------------- | ----------------------------------------------------- | ---------------------------------------------------------------------------------------------- | | `compactForStep` | Compact for step. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L1086) | | `compressTurn` | Compress turn. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L41) | | `dedupeToolHistory` | Dedupe tool history. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L1107) | | `enforceTokenBudget` | Enforce token budget. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L1174) | | `enforceTokenBudgetWithTurnCompression` | Enforce token budget with turn compression. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L116) | | `ensureToolCallInputs` | Ensure tool call inputs helper. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L1055) | | `estimateOverhead` | Estimate overhead. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L1049) | | `estimateTokens` | Estimate tokens. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L31) | | `isModelSupportedFileMediaType` | Check whether the model supports the file media type. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L217) | | `maskOldToolOutputs` | Mask old tool outputs. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L818) | | `normalizeMessageFilePartMediaTypes` | Normalizes message file part media types. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L223) | | `prepareProviderModelMessagesFromUiMessages` | Prepare provider model messages from UI messages. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L558) | | `repairToolPairs` | Repair tool pairs. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L906) | | `rewriteUnsupportedFilePartsAsAnnotations` | Rewrite unsupported file parts as annotations. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L250) | | `sanitizeProviderModelMessages` | Sanitize provider model messages. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L449) | | `stripPendingToolParts` | Strip pending tool parts. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L345) | #### Types | Name | Description | Source | | --------------------------------------------------- | --------------------------------------------------------------------- | -------------------------------------------------------------------------------------------- | | `PrepareProviderModelMessagesFromUiMessagesOptions` | Options accepted by prepare provider model messages from UI messages. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/message-prep.ts#L26) | ### `veryfront/chat/types` ```ts theme={null} import { buildDataFileAnnotation, isImageFile, isTextPreviewFile } from "veryfront/chat/types"; ``` #### Functions | Name | Description | Source | | ------------------------------------ | ------------------------------------------------- | -------------------------------------------------------------------------------------- | | `buildDataFileAnnotation` | Builds data file annotation. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L634) | | `isImageFile` | Check whether a file is an image. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L592) | | `isTextPreviewFile` | Check whether a file supports text preview. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L606) | | `isValidImageFile` | Check whether a file is a supported image upload. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L597) | | `normalizeInlineAttachmentMediaType` | Normalizes inline attachment media type. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L611) | #### Types | Name | Description | Source | | -------------------------- | -------------------------------------------------------- | ----------------------------------------------------------------------------------------- | | `ChatAssistantContentPart` | Public API contract for chat assistant content part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L250) | | `ChatAssistantMessage` | Message shape for chat assistant. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L271) | | `ChatDataUiPart` | Chat UI part that carries custom data chunks. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L161) | | `ChatDynamicToolUiPart` | Tool UI part for a runtime-selected tool name. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L149) | | `ChatFileUiPart` | Public API contract for chat file UI part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L107) | | `ChatMessageMetadata` | Public API contract for chat message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L134) | | `ChatMessageMetadataUsage` | Public API contract for chat message metadata usage. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L97) | | `ChatModelFilePart` | Public API contract for chat model file part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L204) | | `ChatModelReasoningPart` | Provider model message part that carries reasoning text. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L196) | | `ChatModelTextPart` | Provider model message part that carries text. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L190) | | `ChatNamedToolUiPart` | Tool UI part keyed by a static tool type. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L155) | | `ChatReasoningUiPart` | Public API contract for chat reasoning UI part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L77) | | `ChatRequestContext` | Context for chat request. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L344) | | `ChatRuntimeOverrides` | Public API contract for chat runtime overrides. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L301) | | `ChatSourceDocumentUiPart` | Public API contract for chat source document UI part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L98) | | `ChatSourceUrlUiPart` | Public API contract for chat source URL UI part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L90) | | `ChatStepStartUiPart` | Public API contract for chat step start UI part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L85) | | `ChatSystemMessage` | Message shape for chat system. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L258) | | `ChatTextUiPart` | Public API contract for chat text UI part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L71) | | `ChatToolCallPart` | Provider model message part that carries a tool call. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L215) | | `ChatToolMessage` | Message shape for chat tool. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L277) | | `ChatToolPartState` | State for chat tool part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L121) | | `ChatToolResultOutput` | Output from chat tool result. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L224) | | `ChatToolResultPart` | Provider model message part that carries a tool result. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L239) | | `ChatUiMessage` | Message shape for chat UI. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L179) | | `ChatUiMessageChunk` | Public API contract for chat UI message chunk. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L342) | | `ChatUiMessagePart` | Public API contract for chat UI message part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L167) | | `ChatUiMessageRole` | Public API contract for chat UI message role. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L68) | | `ChatUserContentPart` | Public API contract for chat user content part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L248) | | `ChatUserMessage` | Message shape for chat user. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L265) | | `ChildRunAudit` | Public API contract for child run audit. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L122) | | `ChildRunAuditToolCall` | Public API contract for child run audit tool call. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L107) | | `ChildRunAuditToolResult` | Result returned from child run audit tool. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L114) | | `DurableRootRunDescriptor` | Public API contract for durable root run descriptor. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L290) | | `FileUIPartWithUpload` | File UI part enriched with upload metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L115) | | `MessageMetadata` | Public API contract for chat message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/protocol.ts#L134) | | `ProjectFile` | Public API contract for project file. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L308) | | `ProjectFileListItem` | Public API contract for project file list item. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L314) | | `ProviderModelMessage` | Message shape for provider model. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L283) | | `UploadedFileReference` | Public API contract for uploaded file reference. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L323) | #### Constants | Name | Description | Source | | ----------------------------- | --------------------------------------------------------- | -------------------------------------------------------------------------------------- | | `getChatRequestContextSchema` | Zod schema for get chat request context. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L333) | | `getChatToolPartStateSchema` | Zod schema for get chat tool part state. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L418) | | `getChatUiMessagePartSchema` | Zod schema for get chat UI message part. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L539) | | `getChatUiMessageRoleSchema` | Zod schema for get chat UI message role. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L413) | | `getChatUiMessageSchema` | Zod schema for get chat UI message. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L554) | | `getChatUiMessagesSchema` | Zod schema for get chat UI messages. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L564) | | `getMessageMetadataSchema` | Zod schema for get message metadata. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L395) | | `imageFileTypes` | Image media types that chat uploads can display natively. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L53) | | `textFileExtensions` | File extensions that chat uploads can inline as text. | [source](https://github.com/veryfront/veryfront-code/blob/main/src/chat/types.ts#L50) |