> ## Documentation Index > Fetch the complete documentation index at: https://docs.melius.com/llms.txt > Use this file to discover all available pages before exploring further. # Update a node ## OpenAPI ````yaml /api/openapi.json patch /api/v1/canvases/{canvasId}/direct/nodes/{nodeId} openapi: 3.0.2 info: title: Melius API version: '1' description: >- The Melius REST API. Authenticate with an API key as a bearer token (`Authorization: Bearer mel_...`) and select the team to act on with the `x-team-id` header. Generations run through the same node + run pipeline as the app: create a node on a canvas, start a run, poll the run, then read the resulting version asset. servers: - url: https://api.melius.com security: - apiKey: [] teamId: [] paths: /api/v1/canvases/{canvasId}/direct/nodes/{nodeId}: patch: tags: - node summary: Update a node operationId: node.update parameters: - name: canvasId in: path required: true schema: type: string format: uuid - name: nodeId in: path required: true schema: type: string format: uuid requestBody: description: Body content: application/json: schema: type: object properties: geometry: type: object properties: x: type: number 'y': type: number w: type: number h: type: number zIndex: type: number required: - x - 'y' - w - h nodeType: type: string enum: - text - image - video - audio - file - group - custom_text - pdf - composite - stitch - magic_resize title: type: string groupId: type: string format: uuid nullable: true modelConfig: type: object properties: model: type: string variant: type: string tier: type: string nullable: true font: type: object properties: source: type: string enum: - custom - google familyName: type: string required: - source - familyName required: - model - variant nullable: true textPrompt: type: string nullable: true text: type: string maxLength: 100000 outputAspectRatio: type: string enum: - '21:9' - '16:9' - '4:3' - '5:4' - '3:2' - '1:1' - '2:3' - '3:4' - '4:5' - '9:16' - '9:21' nullable: true outputDuration: type: integer minimum: 0 exclusiveMinimum: true nullable: true outputResolution: oneOf: - type: string enum: - 360p - 480p - 540p - 580p - 720p - 1080p - 1440p - 2160p - 4k - 0.5K - 1K - 2K - 4K - 1k - 2k - type: string matchAudioToVideoDuration: type: boolean nullable: true seed: type: integer minimum: 0 maximum: 2147483647 nullable: true negativePrompt: type: string nullable: true stitchClipOrder: type: array items: type: string nullable: true stitchScaleFit: type: string enum: - fit - stretch nullable: true stitchAudioOverlays: type: array items: type: object properties: nodeId: type: string startTimeSeconds: type: number minimum: 0 trimStartMs: type: integer minimum: 0 trimEndMs: type: integer minimum: 0 exclusiveMinimum: true required: - nodeId - startTimeSeconds nullable: true stitchClipTrims: type: object additionalProperties: type: object properties: trimStartMs: type: integer minimum: 0 trimEndMs: type: integer minimum: 0 exclusiveMinimum: true nullable: true voiceId: type: string minLength: 1 nullable: true customVoiceId: type: string format: uuid nullable: true elevenLabsVoiceSettings: type: object properties: speed: type: number minimum: 0.25 maximum: 4 stability: type: number minimum: 0 maximum: 1 similarityBoost: type: number minimum: 0 maximum: 1 style: type: number minimum: 0 maximum: 1 speakerBoost: type: boolean removeBackgroundNoise: type: boolean outputFormat: type: string enum: - mp3_44100_128 - mp3_44100_192 - mp3_22050_32 - pcm_16000 - pcm_22050 - pcm_24000 - pcm_44100 nullable: true responses: '200': description: '200' content: application/json: schema: type: object properties: id: type: string format: uuid nodeType: type: string enum: - text - image - video - audio - file - group - custom_text - pdf - composite - stitch - magic_resize geometry: type: object properties: x: type: number 'y': type: number w: type: number h: type: number zIndex: type: number required: - x - 'y' - w - h groupId: type: string format: uuid nullable: true title: type: string autoModel: type: boolean nullable: true fastModel: type: boolean nullable: true modelConfig: type: object properties: model: type: string variant: type: string tier: type: string nullable: true ratios: type: array items: type: string resolution: type: string voiceId: type: string customVoiceId: type: string format: uuid font: type: object properties: source: type: string enum: - custom - google familyName: type: string required: - source - familyName required: - model - variant nullable: true textPrompt: type: string nullable: true outputAspectRatio: type: string enum: - '21:9' - '16:9' - '4:3' - '5:4' - '3:2' - '1:1' - '2:3' - '3:4' - '4:5' - '9:16' - '9:21' nullable: true outputDuration: type: integer minimum: 0 exclusiveMinimum: true nullable: true outputResolution: oneOf: - type: string enum: - 360p - 480p - 540p - 580p - 720p - 1080p - 1440p - 2160p - 4k - 0.5K - 1K - 2K - 4K - 1k - 2k - type: string matchAudioToVideoDuration: type: boolean nullable: true seed: type: integer minimum: 0 maximum: 2147483647 nullable: true negativePrompt: type: string nullable: true stitchClipOrder: type: array items: type: string nullable: true stitchScaleFit: type: string enum: - fit - stretch nullable: true stitchAudioOverlays: type: array items: type: object properties: nodeId: type: string startTimeSeconds: type: number minimum: 0 trimStartMs: type: integer minimum: 0 trimEndMs: type: integer minimum: 0 exclusiveMinimum: true required: - nodeId - startTimeSeconds nullable: true stitchClipTrims: type: object additionalProperties: type: object properties: trimStartMs: type: integer minimum: 0 trimEndMs: type: integer minimum: 0 exclusiveMinimum: true nullable: true voiceId: type: string nullable: true customVoiceId: type: string nullable: true elevenLabsVoiceSettings: type: object properties: speed: type: number minimum: 0.25 maximum: 4 stability: type: number minimum: 0 maximum: 1 similarityBoost: type: number minimum: 0 maximum: 1 style: type: number minimum: 0 maximum: 1 speakerBoost: type: boolean removeBackgroundNoise: type: boolean outputFormat: type: string enum: - mp3_44100_128 - mp3_44100_192 - mp3_22050_32 - pcm_16000 - pcm_22050 - pcm_24000 - pcm_44100 nullable: true src: type: string nullable: true previewSrc: type: string nullable: true mediaType: type: string enum: - image - video - audio - pdf nullable: true generatedText: type: string nullable: true activeVersionId: type: string format: uuid nullable: true assetDurationInMs: type: integer minimum: 0 nullable: true createdByUserId: type: string format: uuid nullable: true required: - id - nodeType - geometry - groupId - title - modelConfig - textPrompt - outputAspectRatio - outputDuration - outputResolution - seed - negativePrompt - src - previewSrc - mediaType - generatedText - activeVersionId - assetDurationInMs - createdByUserId '401': description: Missing, invalid, expired, or revoked API key. content: application/json: schema: type: object properties: statusCode: type: integer error: type: string message: type: string required: - statusCode - message '403': description: The API key's user is not a member of the requested team. content: application/json: schema: type: object properties: statusCode: type: integer error: type: string message: type: string required: - statusCode - message '404': description: '404' content: application/json: schema: type: object properties: message: type: string required: - message '409': description: '409' content: application/json: schema: type: object properties: message: type: string required: - message '429': description: Rate limit reached — retry after the `Retry-After` header. headers: Retry-After: description: Seconds to wait before retrying. schema: type: integer content: application/json: schema: type: object properties: statusCode: type: integer error: type: string message: type: string retryAfterSeconds: type: integer required: - statusCode - message components: securitySchemes: apiKey: type: http scheme: bearer description: 'A Melius API key (`mel_...`), sent as `Authorization: Bearer `.' teamId: type: apiKey in: header name: x-team-id description: The team (workspace) to act on. Defaults to the key's team when omitted. ````