> ## Documentation Index > Fetch the complete documentation index at: https://docs.uselamina.ai/llms.txt > Use this file to discover all available pages before exploring further. # Transfer Asset to CDN > Transfer an asset from an external URL to the Lamina CDN for reliable, permanent access. Use this when you need a stable URL for publishing or downstream consumption. Generated assets from executions are often stored on temporary provider URLs that may expire. Transfer them to CDN before publishing or sharing. Returns the permanent CDN URL that can be used with `POST /v1/publishing/publish` or any other system. Transfer a generated asset from an external URL to the Lamina CDN for reliable, long-term access. AI model providers often host generated assets on temporary URLs that expire. Use this endpoint to copy the asset to Lamina's CDN before the source URL goes away. Returns the permanent CDN URL. Supports `image`, `video`, and `audio` assets. ## OpenAPI ````yaml POST /v1/publishing/transfer-asset openapi: 3.1.0 info: title: Lamina Apps API version: 1.0.0 description: > Professional creative content production for AI agents. Create brand-aligned images, videos, and designs from natural-language briefs using 30+ specialized AI pipelines. Unlike raw model APIs (DALL-E, Flux, Kling), Lamina automatically applies brand guidelines, selects the optimal multi-model pipeline, scores output quality, and delivers permanent CDN-hosted URLs with composability metadata for chaining. ## Authentication All endpoints require an API key passed via one of these headers: - `x-api-key: lma_your_key` (recommended) - `Authorization: Bearer lma_your_key` API keys are workspace-scoped. Create them in **Settings -> API Keys**. ## Quick Start (One-Call Path) `POST /v1/create` with `{ "brief": "product photo of sneakers", "sync": true }` — returns completed output inline with CDN URL. ## Quick Start (Advanced) 1. `GET /v1/apps` -- browse 30+ specialized creative apps 2. `GET /v1/apps/{appId}` -- inspect input parameters 3. `POST /v1/apps/{appId}/runs?webhook=` -- run with your inputs 4. Receive results via webhook, poll `GET /v1/runs/{runId}`, or stream via `GET /v1/runs/{runId}/stream` ## Rate Limits All `/v1/*` endpoints are currently limited to 100 requests per minute per IP. On `429`, read the `RateLimit-*` and `Retry-After` headers before retrying. ## How Inputs Work When running an app, provide inputs as a JSON object keyed by parameter **name** (from the app details response). - **text** parameters: send a string value (e.g. a prompt or description) - **options** parameters: send the **label** of the option (e.g. `"Caucasian"`), not an internal value - **url** parameters: send a publicly accessible URL to an image or video Every parameter is returned with `required: true`. Parameters with a `default` can safely be omitted -- the app will use the default value. ## Endpoint Groups | Group | Purpose | |-------|---------| | **Apps** | Discover and inspect available content creation apps | | **Runs** | Run workflows, track progress, and retrieve results | | **Assets** | Browse generated images, videos, and text from past executions | | **Intelligence** | Brand context, performance prediction, recommendations, and trends | | **Publishing** | Publish content to connected social channels | | **Content** | One-call agent operations: create, score, brief, batch | | **Account** | Credit balance and rate limit visibility | | **Templates** | Content creation templates and strategies | | **Webhooks** | Webhook signature verification | servers: - url: https://app.uselamina.ai description: Production security: - apiKey: [] tags: - name: Create description: Create content from briefs, run specific apps, and use templates - name: Discover description: Find and inspect available apps and their input schemas - name: Track description: Monitor execution progress, retrieve results, and browse generated assets - name: Intelligence description: >- Brand context, performance prediction, content recommendations, and trend signals - name: Distribute description: Publish content to social channels and transfer assets to CDN - name: Score description: Evaluate content quality, brand alignment, and engagement potential - name: Account description: Credit balance, rate limits, and health checks - name: Webhooks description: Webhook signature verification for secure callback handling paths: /v1/publishing/transfer-asset: post: tags: - Distribute summary: Transfer Asset to CDN description: > Transfer an asset from an external URL to the Lamina CDN for reliable, permanent access. Use this when you need a stable URL for publishing or downstream consumption. Generated assets from executions are often stored on temporary provider URLs that may expire. Transfer them to CDN before publishing or sharing. Returns the permanent CDN URL that can be used with `POST /v1/publishing/publish` or any other system. operationId: transferAsset requestBody: required: true content: application/json: schema: type: object properties: sourceUrl: type: string format: uri description: >- The URL of the asset to transfer. Must be publicly accessible. mediaType: type: string enum: - image - video - audio description: The type of media being transferred. filename: type: string description: >- Optional filename for the CDN asset. Auto-generated if omitted. required: - sourceUrl - mediaType example: sourceUrl: https://fal.media/files/generated/output-001.png mediaType: image filename: campaign-hero-image.png responses: '200': description: CDN URL for the transferred asset content: application/json: schema: type: object properties: data: type: object properties: url: type: string format: uri description: Permanent CDN URL for the asset. example: data: url: >- https://media.getmason.io/api/assetlib/abc123-campaign-hero-image.png '400': description: >- Invalid request (missing sourceUrl, invalid mediaType, or invalid URL) content: application/json: schema: $ref: '#/components/schemas/Error' example: error: 'mediaType must be one of: image, video, audio' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' components: schemas: Error: type: object description: Standard error response required: - error properties: error: type: string description: Human-readable error message details: type: array items: type: string description: Additional validation error details (present on 400 responses) responses: Unauthorized: description: Missing or invalid API key content: application/json: schema: type: object properties: error: type: string example: error: Invalid API key TooManyRequests: description: >- Rate limit exceeded. All `/v1/*` endpoints are currently limited to 100 requests per minute per IP. headers: RateLimit-Policy: description: Active rate limit policy. schema: type: string example: 100;w=60 RateLimit-Limit: description: Max requests allowed in the current window. schema: type: integer example: 100 RateLimit-Remaining: description: Requests remaining in the current window. schema: type: integer example: 0 RateLimit-Reset: description: Seconds until the current window resets. schema: type: integer example: 60 Retry-After: description: Seconds to wait before retrying. schema: type: integer example: 60 content: text/plain: schema: type: string example: Too many requests from this IP, please try again in a minute securitySchemes: apiKey: type: apiKey in: header name: x-api-key description: 'Workspace API key. Prefix: `lma_`. Example: `lma_abc123...`' ````