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Langflow Workflow API

The Workflow API from Langflow — 2 operation(s) for workflow.

Langflow Workflow API is one of 15 APIs that Langflow publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 5 JSON Schema definitions.

Tagged areas include Workflows. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, authentication docs, a JSON-LD context, and 5 JSON Schemas.

This API exposes 3 operations across 2 paths, and defines 8 schemas. It is described by OpenAPI 3.1.0, at version 1.9.0.

Requests are made against the base URL http://localhost:7860/api.

3 operations 2 paths 8 schemas 1 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
1.9.0
Base URL
http://localhost:7860/api
Authentication
API Key, API Key, OAuth 2.0
Resource Areas
1

Authentication & Security 3

Langflow Workflow API declares 3 security schemes for authenticating requests. An API key is passed in the header as x-api-key (API key header). An API key is passed in the query as x-api-key (API key query). It supports OAuth 2.0 (OAuth2PasswordBearerCookie) using the password flow.

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 1 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Workflow 3
GET
/api/v2/workflows
Get Workflow Status
get_workflow_status_api_v2_workflows_get 1 param → 200422
POST
/api/v2/workflows
Execute Workflow
execute_workflow_api_v2_workflows_post body → 200422
POST
/api/v2/workflows/stop
Stop Workflow
stop_workflow_api_v2_workflows_stop_post body → 200422

Schemas 8

The contract defines 8 schemas that model the data the API accepts and returns. The most detailed are ValidationError (5 properties), ComponentOutput (4 properties), WorkflowExecutionRequest (4 properties), ErrorDetail (3 properties). Each schema is shown below with its type and property counts.

ComponentOutput
object
Component output schema.
4 properties 2 required
HTTPValidationError
object
1 property
ErrorDetail
object
Error detail schema.
3 properties 1 required
ValidationError
object
5 properties 3 required
WorkflowExecutionRequest
object
Request schema for workflow execution.
4 properties 1 required
WorkflowStopRequest
object
Request schema for stopping workflow.
1 property 1 required
JobStatus
string
Job execution status.
WorkflowStopResponse
object
Response schema for stopping workflow.
2 properties 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

langflow-workflow-api-openapi.yml Raw ↑

Other APIs Langflow publishes across the network.

Langflow Base API
Langflow Chat API
Langflow Files API
Langflow Flow Events API
Langflow Flows API
Langflow Health Check API
Langflow Log API
Langflow MCP API
Langflow mcp_projects API
Langflow Monitor API
Langflow OpenAI Responses API API
Langflow Projects API
Where this information came from

This is an independent, third-party profile of Langflow Workflow API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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