> ## Documentation Index > Fetch the complete documentation index at: https://docs.pathors.com/llms.txt > Use this file to discover all available pages before exploring further. # Create node > Add a node to the pathway. Returns 409 if a node with the same ID already exists. ## OpenAPI ````yaml https://api.pathors.com/openapi.json post /v1/projects/{projectId}/pathway/nodes openapi: 3.1.0 info: title: Pathors API description: >- Public developer API for the Pathors platform. Authenticate with a developer key (`Authorization: Bearer dk_...`) created from the dashboard. See [docs.pathors.com](https://docs.pathors.com) for guides. version: 1.0.0 contact: name: Pathors Support url: https://app.pathors.com/support servers: - url: https://api.pathors.com description: Production - url: http://localhost:8080 description: Local development security: - developerKey: [] tags: - name: Projects description: CRUD for projects owned by the authenticated developer - name: Agent Config description: Read and update a project's agent configuration and versions - name: Pathway description: Manage a project's pathway graph — nodes and decision edges - name: Chat description: OpenAI-compatible chat completions for a project agent - name: Sessions description: Create, search, terminate, and inspect agent sessions - name: Session History description: Browse and inspect persisted session history - name: Tools description: Manage a project's tools and inspect available tool types - name: Knowledgebases description: Manage knowledgebases and query them for relevant chunks - name: Datasets description: Upload and manage source files embedded into a knowledgebase - name: Test Cases description: CRUD for agent test cases - name: Test Suites description: Group test cases, run them, and read results - name: Webhooks description: Manage webhook subscriptions for project events - name: Calls description: Place outbound voice calls from a project agent paths: /v1/projects/{projectId}/pathway/nodes: post: tags: - Pathway summary: Create node description: >- Add a node to the pathway. Returns 409 if a node with the same ID already exists. operationId: postV1ProjectsByProjectIdPathwayNodes parameters: - name: projectId in: path required: true schema: type: string description: The ID of your project requestBody: required: true content: application/json: schema: $schema: https://json-schema.org/draft/2020-12/schema type: object properties: id: type: string data: oneOf: - type: object properties: type: type: string const: start title: type: string prompt: type: string tools: type: array items: type: string knowledgeBaseId: type: string variableKeys: type: array items: type: string staticTokenCount: type: number required: - type - title - prompt additionalProperties: {} - type: object properties: type: type: string const: prompt title: type: string prompt: type: string tools: type: array items: type: string isGlobalNode: type: boolean globalNodeReason: type: string variableKeys: type: array items: type: string staticTokenCount: type: number required: - type - title - prompt additionalProperties: {} - type: object properties: type: type: string const: goto title: type: string referenceNodeId: anyOf: - type: string - type: 'null' required: - type - title - referenceNodeId additionalProperties: {} required: - id - data additionalProperties: {} responses: '201': description: Created content: application/json: schema: type: object properties: data: type: object properties: id: type: string data: anyOf: - type: object properties: type: type: string const: start title: type: string prompt: type: string tools: type: array items: type: string knowledgeBaseId: type: string variableKeys: type: array items: type: string staticTokenCount: type: number required: - type - title - prompt additionalProperties: {} - type: object properties: type: type: string const: prompt title: type: string prompt: type: string tools: type: array items: type: string isGlobalNode: type: boolean globalNodeReason: type: string variableKeys: type: array items: type: string staticTokenCount: type: number required: - type - title - prompt additionalProperties: {} - type: object properties: type: type: string const: goto title: type: string referenceNodeId: anyOf: - type: string - type: 'null' required: - type - title - referenceNodeId additionalProperties: {} required: - id - data additionalProperties: {} required: - data '400': description: Error response content: application/json: schema: anyOf: - type: object properties: error: type: string required: - error - type: object properties: error: type: object properties: message: type: string code: type: string details: type: object propertyNames: type: string additionalProperties: {} required: - message required: - error '401': description: Error response content: application/json: schema: anyOf: - type: object properties: error: type: string required: - error - type: object properties: error: type: object properties: message: type: string code: type: string details: type: object propertyNames: type: string additionalProperties: {} required: - message required: - error '404': description: Error response content: application/json: schema: anyOf: - type: object properties: error: type: string required: - error - type: object properties: error: type: object properties: message: type: string code: type: string details: type: object propertyNames: type: string additionalProperties: {} required: - message required: - error '409': description: A node with that ID already exists content: application/json: schema: anyOf: - type: object properties: error: type: string required: - error - type: object properties: error: type: object properties: message: type: string code: type: string details: type: object propertyNames: type: string additionalProperties: {} required: - message required: - error components: securitySchemes: developerKey: type: http scheme: bearer bearerFormat: Developer key (dk_...) description: Developer key created from the dashboard (Settings → Developer Keys) ````