Langflow

Langflow Flows API

The Flows API from Langflow — 8 operation(s) for flows.

GitHub OpenAPI

Documentation

📖
Documentation
https://docs.langflow.org/api-reference-api-examples
📖
Authentication
https://docs.langflow.org/api-keys-and-authentication
📖
Documentation
https://docs.langflow.org/concepts-flows
📖
Documentation
https://docs.langflow.org/mcp-server
📖
Documentation
https://docs.langflow.org/api-keys-and-authentication

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/openapi/langflow-flows-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/json-schema/langflow-flow-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/json-schema/langflow-project-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/json-schema/langflow-message-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/json-schema/langflow-user-schema.json
📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/json-schema/langflow-mcp-server-schema.json

Other Resources

🔗
JSONLD
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/json-ld/langflow-context.jsonld
🔗
Vocabulary
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/vocabulary/langflow-vocabulary.yml
🔗
SpectralRuleset
https://raw.githubusercontent.com/api-evangelist/langflow/refs/heads/main/rules/langflow-rules.yml

OpenAPI Specification

langflow-flows-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Langflow Base Flows API
  version: 1.9.0
tags:
- name: Flows
paths:
  /api/v1/flows/:
    delete:
      description: Delete multiple flows by their IDs.
      operationId: delete_multiple_flows_api_v1_flows__delete
      requestBody:
        content:
          application/json:
            schema:
              items:
                format: uuid
                type: string
              title: Flow Ids
              type: array
        required: true
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Delete Multiple Flows
      tags:
      - Flows
    get:
      description: Retrieve a list of flows with optional pagination, filtering, and header-only mode.
      operationId: read_flows_api_v1_flows__get
      parameters:
      - in: query
        name: remove_example_flows
        required: false
        schema:
          default: false
          title: Remove Example Flows
          type: boolean
      - in: query
        name: components_only
        required: false
        schema:
          default: false
          title: Components Only
          type: boolean
      - in: query
        name: get_all
        required: false
        schema:
          default: true
          title: Get All
          type: boolean
      - in: query
        name: folder_id
        required: false
        schema:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: Folder Id
      - in: query
        name: header_flows
        required: false
        schema:
          default: false
          title: Header Flows
          type: boolean
      - in: query
        name: page
        required: false
        schema:
          default: 1
          minimum: 1
          title: Page
          type: integer
      - in: query
        name: size
        required: false
        schema:
          default: 50
          maximum: 100
          minimum: 1
          title: Size
          type: integer
      responses:
        '200':
          content:
            application/json:
              schema:
                anyOf:
                - items:
                    $ref: '#/components/schemas/FlowRead'
                  type: array
                - $ref: '#/components/schemas/Page_FlowRead_'
                - items:
                    $ref: '#/components/schemas/FlowHeader'
                  type: array
                title: Response Read Flows Api V1 Flows  Get
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Read Flows
      tags:
      - Flows
    post:
      operationId: create_flow_api_v1_flows__post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FlowCreate'
        required: true
      responses:
        '201':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FlowRead'
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Create Flow
      tags:
      - Flows
  /api/v1/flows/basic_examples/:
    get:
      description: Retrieve a list of basic example flows.
      operationId: read_basic_examples_api_v1_flows_basic_examples__get
      responses:
        '200':
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/FlowRead'
                title: Response Read Basic Examples Api V1 Flows Basic Examples  Get
                type: array
          description: Successful Response
      summary: Read Basic Examples
      tags:
      - Flows
  /api/v1/flows/batch/:
    post:
      description: Create multiple new flows.
      operationId: create_flows_api_v1_flows_batch__post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FlowListCreate'
        required: true
      responses:
        '201':
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/FlowRead'
                title: Response Create Flows Api V1 Flows Batch  Post
                type: array
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Create Flows
      tags:
      - Flows
  /api/v1/flows/download/:
    post:
      description: Download all flows as a zip file.
      operationId: download_multiple_file_api_v1_flows_download__post
      requestBody:
        content:
          application/json:
            schema:
              items:
                format: uuid
                type: string
              title: Flow Ids
              type: array
        required: true
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Download Multiple File
      tags:
      - Flows
  /api/v1/flows/public_flow/{flow_id}:
    get:
      description: Read a public flow.
      operationId: read_public_flow_api_v1_flows_public_flow__flow_id__get
      parameters:
      - in: path
        name: flow_id
        required: true
        schema:
          format: uuid
          title: Flow Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FlowRead'
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      summary: Read Public Flow
      tags:
      - Flows
  /api/v1/flows/upload/:
    post:
      description: Upload flows from a JSON or ZIP file (upsert semantics for flows with stable IDs).
      operationId: upload_file_api_v1_flows_upload__post
      parameters:
      - in: query
        name: folder_id
        required: false
        schema:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: Folder Id
      requestBody:
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/Body_upload_file_api_v1_flows_upload__post'
      responses:
        '201':
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/FlowRead'
                title: Response Upload File Api V1 Flows Upload  Post
                type: array
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Upload File
      tags:
      - Flows
  /api/v1/flows/{flow_id}:
    delete:
      description: Delete a flow.
      operationId: delete_flow_api_v1_flows__flow_id__delete
      parameters:
      - in: path
        name: flow_id
        required: true
        schema:
          format: uuid
          title: Flow Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Delete Flow
      tags:
      - Flows
    get:
      description: Read a flow.
      operationId: read_flow_api_v1_flows__flow_id__get
      parameters:
      - in: path
        name: flow_id
        required: true
        schema:
          format: uuid
          title: Flow Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FlowRead'
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Read Flow
      tags:
      - Flows
    patch:
      description: Update a flow.
      operationId: update_flow_api_v1_flows__flow_id__patch
      parameters:
      - in: path
        name: flow_id
        required: true
        schema:
          format: uuid
          title: Flow Id
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FlowUpdate'
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FlowRead'
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Update Flow
      tags:
      - Flows
    put:
      description: Create or update a flow with a specific ID (upsert).<br><br>Returns 201 for creation, 200 for update.  Returns 404 if owned by another user.
      operationId: upsert_flow_api_v1_flows__flow_id__put
      parameters:
      - in: path
        name: flow_id
        required: true
        schema:
          format: uuid
          title: Flow Id
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FlowCreate'
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FlowRead'
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Upsert Flow
      tags:
      - Flows
  /api/v1/starter-projects/:
    get:
      description: Get a list of starter projects.
      operationId: get_starter_projects_api_v1_starter_projects__get
      responses:
        '200':
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/GraphDumpResponse'
                title: Response Get Starter Projects Api V1 Starter Projects  Get
                type: array
          description: Successful Response
      security:
      - OAuth2PasswordBearerCookie: []
      - API key query: []
      - API key header: []
      summary: Get Starter Projects
      tags:
      - Flows
components:
  schemas:
    FlowHeader:
      description: Model representing a header for a flow - Without the data.
      properties:
        access_type:
          anyOf:
          - $ref: '#/components/schemas/AccessTypeEnum'
          - type: 'null'
          description: The access type of the flow
        action_description:
          anyOf:
          - type: string
          - type: 'null'
          description: The description of the action associated with the flow
          title: Action Description
        action_name:
          anyOf:
          - type: string
          - type: 'null'
          description: The name of the action associated with the flow
          title: Action Name
        data:
          anyOf:
          - additionalProperties: true
            type: object
          - type: 'null'
          description: The data of the component, if is_component is True
          title: Data
        description:
          anyOf:
          - type: string
          - type: 'null'
          description: A description of the flow
          title: Description
        endpoint_name:
          anyOf:
          - type: string
          - type: 'null'
          description: The name of the endpoint associated with this flow
          title: Endpoint Name
        folder_id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          description: The ID of the folder containing the flow. None if not associated with a folder
          title: Folder Id
        id:
          description: Unique identifier for the flow
          format: uuid
          title: Id
          type: string
        is_component:
          anyOf:
          - type: boolean
          - type: 'null'
          description: Flag indicating whether the flow is a component
          title: Is Component
        mcp_enabled:
          anyOf:
          - type: boolean
          - type: 'null'
          description: Flag indicating whether the flow is exposed in the MCP server
          title: Mcp Enabled
        name:
          description: The name of the flow
          title: Name
          type: string
        tags:
          anyOf:
          - items:
              type: string
            type: array
          - type: 'null'
          description: The tags of the flow
          title: Tags
      required:
      - id
      - name
      title: FlowHeader
      type: object
    AccessTypeEnum:
      enum:
      - PRIVATE
      - PUBLIC
      title: AccessTypeEnum
      type: string
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          title: Detail
          type: array
      title: HTTPValidationError
      type: object
    FlowCreate:
      properties:
        access_type:
          $ref: '#/components/schemas/AccessTypeEnum'
          default: PRIVATE
        action_description:
          anyOf:
          - type: string
          - type: 'null'
          description: The description of the action associated with the flow
          title: Action Description
        action_name:
          anyOf:
          - type: string
          - type: 'null'
          description: The name of the action associated with the flow
          title: Action Name
        data:
          anyOf:
          - additionalProperties: true
            type: object
          - type: 'null'
          title: Data
        description:
          anyOf:
          - type: string
          - type: 'null'
          title: Description
        endpoint_name:
          anyOf:
          - type: string
          - type: 'null'
          title: Endpoint Name
        folder_id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: Folder Id
        fs_path:
          anyOf:
          - type: string
          - type: 'null'
          title: Fs Path
        gradient:
          anyOf:
          - type: string
          - type: 'null'
          title: Gradient
        icon:
          anyOf:
          - type: string
          - type: 'null'
          title: Icon
        icon_bg_color:
          anyOf:
          - type: string
          - type: 'null'
          title: Icon Bg Color
        id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: Id
        is_component:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          title: Is Component
        locked:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          title: Locked
        mcp_enabled:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          description: Can be exposed in the MCP server
          title: Mcp Enabled
        name:
          title: Name
          type: string
        tags:
          anyOf:
          - items:
              type: string
            type: array
          - type: 'null'
          title: Tags
        updated_at:
          anyOf:
          - format: date-time
            type: string
          - type: 'null'
          title: Updated At
        user_id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: User Id
        webhook:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          description: Can be used on the webhook endpoint
          title: Webhook
      required:
      - name
      title: FlowCreate
      type: object
    FlowListCreate:
      properties:
        flows:
          items:
            $ref: '#/components/schemas/FlowCreate'
          title: Flows
          type: array
      required:
      - flows
      title: FlowListCreate
      type: object
    ValidationError:
      properties:
        ctx:
          title: Context
          type: object
        input:
          title: Input
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          title: Location
          type: array
        msg:
          title: Message
          type: string
        type:
          title: Error Type
          type: string
      required:
      - loc
      - msg
      - type
      title: ValidationError
      type: object
    FlowUpdate:
      properties:
        access_type:
          anyOf:
          - $ref: '#/components/schemas/AccessTypeEnum'
          - type: 'null'
        action_description:
          anyOf:
          - type: string
          - type: 'null'
          title: Action Description
        action_name:
          anyOf:
          - type: string
          - type: 'null'
          title: Action Name
        data:
          anyOf:
          - additionalProperties: true
            type: object
          - type: 'null'
          title: Data
        description:
          anyOf:
          - type: string
          - type: 'null'
          title: Description
        endpoint_name:
          anyOf:
          - type: string
          - type: 'null'
          title: Endpoint Name
        folder_id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: Folder Id
        fs_path:
          anyOf:
          - type: string
          - type: 'null'
          title: Fs Path
        locked:
          anyOf:
          - type: boolean
          - type: 'null'
          title: Locked
        mcp_enabled:
          anyOf:
          - type: boolean
          - type: 'null'
          title: Mcp Enabled
        name:
          anyOf:
          - type: string
          - type: 'null'
          title: Name
      title: FlowUpdate
      type: object
    GraphData:
      properties:
        edges:
          items:
            additionalProperties: true
            type: object
          title: Edges
          type: array
        nodes:
          items:
            additionalProperties: true
            type: object
          title: Nodes
          type: array
        viewport:
          anyOf:
          - $ref: '#/components/schemas/ViewPort'
          - type: 'null'
      required:
      - nodes
      - edges
      title: GraphData
      type: object
    ViewPort:
      properties:
        x:
          title: X
          type: number
        y:
          title: Y
          type: number
        zoom:
          title: Zoom
          type: number
      required:
      - x
      - y
      - zoom
      title: ViewPort
      type: object
    FlowRead:
      properties:
        access_type:
          $ref: '#/components/schemas/AccessTypeEnum'
          default: PRIVATE
        action_description:
          anyOf:
          - type: string
          - type: 'null'
          description: The description of the action associated with the flow
          title: Action Description
        action_name:
          anyOf:
          - type: string
          - type: 'null'
          description: The name of the action associated with the flow
          title: Action Name
        data:
          anyOf:
          - additionalProperties: true
            type: object
          - type: 'null'
          title: Data
        description:
          anyOf:
          - type: string
          - type: 'null'
          title: Description
        endpoint_name:
          anyOf:
          - type: string
          - type: 'null'
          title: Endpoint Name
        folder_id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: Folder Id
        gradient:
          anyOf:
          - type: string
          - type: 'null'
          title: Gradient
        icon:
          anyOf:
          - type: string
          - type: 'null'
          title: Icon
        icon_bg_color:
          anyOf:
          - type: string
          - type: 'null'
          title: Icon Bg Color
        id:
          format: uuid
          title: Id
          type: string
        is_component:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          title: Is Component
        locked:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          title: Locked
        mcp_enabled:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          description: Can be exposed in the MCP server
          title: Mcp Enabled
        name:
          title: Name
          type: string
        tags:
          anyOf:
          - items:
              type: string
            type: array
          - type: 'null'
          description: The tags of the flow
          title: Tags
        updated_at:
          anyOf:
          - format: date-time
            type: string
          - type: 'null'
          title: Updated At
        user_id:
          anyOf:
          - format: uuid
            type: string
          - type: 'null'
          title: User Id
        webhook:
          anyOf:
          - type: boolean
          - type: 'null'
          default: false
          description: Can be used on the webhook endpoint
          title: Webhook
      required:
      - name
      - id
      - user_id
      - folder_id
      title: FlowRead
      type: object
    Body_upload_file_api_v1_flows_upload__post:
      properties:
        file:
          anyOf:
          - contentMediaType: application/octet-stream
            type: string
          - type: 'null'
          title: File
      title: Body_upload_file_api_v1_flows_upload__post
      type: object
    Page_FlowRead_:
      properties:
        items:
          items:
            $ref: '#/components/schemas/FlowRead'
          title: Items
          type: array
        page:
          minimum: 1.0
          title: Page
          type: integer
        pages:
          minimum: 0.0
          title: Pages
          type: integer
        size:
          minimum: 1.0
          title: Size
          type: integer
        total:
          minimum: 0.0
          title: Total
          type: integer
      required:
      - items
      - total
      - page
      - size
      - pages
      title: Page[FlowRead]
      type: object
    GraphDumpResponse:
      properties:
        data:
          $ref: '#/components/schemas/GraphData'
        description:
          anyOf:
          - type: string
          - type: 'null'
          title: Description
        endpoint_name:
          anyOf:
          - type: string
          - type: 'null'
          title: Endpoint Name
        is_component:
          anyOf:
          - type: boolean
          - type: 'null'
          title: Is Component
        name:
          anyOf:
          - type: string
          - type: 'null'
          title: Name
      required:
      - data
      title: GraphDumpResponse
      type: object
  securitySchemes:
    API key header:
      in: header
      name: x-api-key
      type: apiKey
    API key query:
      in: query
      name: x-api-key
      type: apiKey
    OAuth2PasswordBearerCookie:
      flows:
        password:
          scopes: {}
          tokenUrl: api/v1/login
      type: oauth2