> ## Documentation Index > Fetch the complete documentation index at: https://docs.dify.ai/llms.txt > Use this file to discover all available pages before exploring further. # Get App Parameters > **Available for**: Chatflow, Workflow, New Agent, Chatbot, Agent, Text Generator apps. Retrieve the application's input form configuration, including feature switches, input parameter names, types, and default values. ## OpenAPI ````yaml /en/api-reference/openapi_service.json get /parameters openapi: 3.0.1 info: title: Dify Service API description: >- REST API for Dify applications and knowledge bases. Application endpoints authenticate with an app API key; knowledge endpoints authenticate with a dataset API key. version: 1.0.0 servers: - url: https://{api_base_url} description: >- Base URL of the Dify Service API. For self-hosted deployments, replace it with your own API base URL. variables: api_base_url: default: api.dify.ai/v1 description: Host and path of the API base URL, without the `https://` prefix. security: - ApiKeyAuth: [] tags: - name: Chat Messages description: Operations related to chat messages and interactions. - name: Files description: File upload and preview operations. - name: End Users description: Operations related to end user information. - name: Feedback description: User feedback operations. - name: Conversations description: Operations related to managing conversations. - name: Audio description: Text-to-Speech and Speech-to-Text operations. - name: Applications description: Operations to retrieve application settings and information. - name: Annotations description: Operations related to managing annotations for direct replies. - name: Human Input description: Endpoints for resuming paused workflows that require human input. - name: Workflow Runs description: Operations for executing and managing workflows. - name: Completion Messages description: Operations related to text generation and completion. - name: Knowledge Bases description: >- Operations for managing knowledge bases, including creation, configuration, and retrieval. - name: Documents description: >- Operations for creating, updating, and managing documents within a knowledge base. - name: Chunks description: Operations for managing document chunks and child chunks. - name: Metadata description: >- Operations for managing knowledge base metadata fields and document metadata values. - name: Tags description: Operations for managing knowledge base tags and tag bindings. - name: Models description: Operations for retrieving available models. - name: Knowledge Pipeline description: >- Operations for managing and running knowledge pipelines, including datasource plugins and pipeline execution. paths: /parameters: get: tags: - Applications summary: Get App Parameters description: >- **Available for**: Chatflow, Workflow, New Agent, Chatbot, Agent, Text Generator apps. Retrieve the application's input form configuration, including feature switches, input parameter names, types, and default values. operationId: getChatAppParameters responses: '200': description: Application parameters information. content: application/json: schema: $ref: '#/components/schemas/AppParametersResponse' examples: appParameters: summary: Response Example value: opening_statement: Hello! How can I help you today? suggested_questions: - What can you do? - Tell me about your features. suggested_questions_after_answer: enabled: true speech_to_text: enabled: false text_to_speech: enabled: false voice: alloy language: en-US autoPlay: disabled retriever_resource: enabled: true annotation_reply: enabled: false more_like_this: enabled: false sensitive_word_avoidance: enabled: false user_input_form: - text-input: label: City variable: city required: true default: '' file_upload: image: enabled: true number_limits: 3 detail: high transfer_methods: - remote_url - local_file system_parameters: file_size_limit: 15 image_file_size_limit: 10 audio_file_size_limit: 50 video_file_size_limit: 100 workflow_file_upload_limit: 10 '400': description: >- - `app_unavailable` : App unavailable or misconfigured. - `agent_not_published` : The bound Agent has no published version. (New Agent apps) content: application/json: examples: app_unavailable: summary: app_unavailable value: status: 400 code: app_unavailable message: App unavailable, please check your app configurations. agent_not_published: summary: agent_not_published value: code: agent_not_published message: >- Agent has not been published. Please publish the Agent before using the API. status: 400 components: schemas: AppParametersResponse: type: object properties: opening_statement: type: string nullable: true description: Opening statement text. suggested_questions: type: array items: type: string description: List of suggested questions. suggested_questions_after_answer: type: object description: Configuration for suggested questions after an answer. properties: enabled: type: boolean description: Whether this feature is enabled. speech_to_text: type: object description: Speech-to-text feature configuration. properties: enabled: type: boolean description: Whether this feature is enabled. text_to_speech: type: object description: Text-to-speech feature configuration. properties: enabled: type: boolean description: Whether this feature is enabled. voice: type: string description: Voice identifier for TTS. language: type: string description: Language for TTS. autoPlay: type: string description: >- Auto-play setting. `enabled` to auto-play audio, `disabled` to require manual play. retriever_resource: type: object description: Knowledge retrieval citation resource configuration. properties: enabled: type: boolean description: Whether this feature is enabled. annotation_reply: type: object description: Annotation reply feature configuration. properties: enabled: type: boolean description: Whether this feature is enabled. more_like_this: type: object description: More-like-this feature configuration. properties: enabled: type: boolean description: Whether this feature is enabled. sensitive_word_avoidance: type: object description: Content moderation feature configuration. properties: enabled: type: boolean description: Whether this feature is enabled. user_input_form: type: array items: type: object oneOf: - title: Text Input type: object properties: text-input: type: object properties: label: type: string description: Display label for the input field. variable: type: string description: Variable name used in the workflow. required: type: boolean description: Whether this field is required. default: type: string description: Default value for the input field. - title: Paragraph type: object properties: paragraph: type: object properties: label: type: string description: Display label for the paragraph field. variable: type: string description: Variable name used in the workflow. required: type: boolean description: Whether this field is required. default: type: string description: Default value for the paragraph field. - title: Select type: object properties: select: type: object properties: label: type: string description: Display label for the select field. variable: type: string description: Variable name used in the workflow. required: type: boolean description: Whether this field is required. default: type: string description: Default selected value. options: type: array items: type: string description: List of selectable values for this form control. description: User input form configuration. file_upload: type: object description: File upload configuration. properties: image: type: object properties: enabled: type: boolean description: Whether image upload is enabled. number_limits: type: integer description: Maximum number of images that can be uploaded. detail: type: string description: Image detail level for vision models. transfer_methods: type: array items: type: string description: >- Allowed transfer methods for image upload. `remote_url` for file URL, `local_file` for uploaded file. system_parameters: type: object description: System-level parameter limits. properties: file_size_limit: type: integer description: Maximum general file size in MB. image_file_size_limit: type: integer description: Maximum image file size in MB. audio_file_size_limit: type: integer description: Maximum audio file size in MB. video_file_size_limit: type: integer description: Maximum video file size in MB. workflow_file_upload_limit: type: integer description: Maximum number of files per workflow execution. securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: API_KEY description: >- API Key authentication. For all API requests, include your API Key in the `Authorization` HTTP Header, prefixed with `Bearer `. Example: `Authorization: Bearer {API_KEY}`. **Strongly recommend storing your API Key on the server-side, not shared or stored on the client-side, to avoid possible API-Key leakage that can lead to serious consequences.** Requests with a missing or invalid API key fail with HTTP `401` and error code `unauthorized`. ````