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Vertical storytelling

A webtoon API for vertical story workflows.

A webtoon API request combines tall output dimensions, serialized page structure, character references, and scene instructions for vertical reading products.

The API generates original assets. It does not provide a catalog of hosted webtoons, chapters, or creator metadata.

Generate a vertical example

Account, API key, usage, and billing open on LlamaGen.AI.

Verifiable request

Two-page vertical episode

cURL
curl -X POST \
  https://api.llamagen.ai/v1/comics/generations \
  -H "Authorization: Bearer $LLAMAGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "A vertical fantasy episode where Mina follows a glowing fox into a subway portal.",
  "size": "1024x1792",
  "pagination": {
    "totalPages": 2,
    "panelsPerPage": 4
  },
  "comicRoles": [
    {
      "name": "Mina",
      "dress": "yellow raincoat",
      "referenceImages": [
        "https://example.com/mina-front.webp"
      ]
    }
  ]
}'

Structured response

State your application can route

response.jsonPROCESSED
{
  "id": "gen_abc123",
  "status": "PROCESSED",
  "comics": [
    {
      "page": 0,
      "panels": [
        {
          "panel": 0,
          "caption": "Mina steps through the portal.",
          "assetUrl": "https://cdn.llamagen.ai/comics/panel-1.webp"
        }
      ]
    }
  ]
}

Output evidence

Inspect the visual result and the machine-readable state.

The visual is evidence of the output category. The JSON is what lets an application correlate the generation, render a preview, store assets, and continue the workflow.

Tall multi-panel comic representing webtoon API output
Representative LlamaGen Comic API output. Exact composition varies by input and generation.

Capability and boundary facts

Facts an integration can verify.

Last verified:

Endpoint
POST /v1/comics/generations
Authentication
Bearer API key
Lifecycle
QUEUED → PROCESSING → PROCESSED or FAILED
Delivery
Poll by generation ID or use a callback URL
Vertical format
Tall canvas plus multi-page pagination

Good fit

Use it when

  • Vertical comic apps
  • Serialized creator workflows
  • Mobile-first visual stories

Wrong fit

Do not use it for

  • Reading or indexing published webtoons
  • One-shot synchronous rendering
  • Unreviewed automated publishing

Production limits

Plan for the boundaries.

  • 01Episode pacing, gutters, and mobile reading rhythm require product-side layout review.
  • 02Do not combine fixed panel count with pagination in one request.
  • 03Generation is asynchronous; production interfaces must handle processing and failure states.
  • 04Outputs should be reviewed against product, brand, safety, and print requirements before delivery.
  • 05You must have the rights to prompts, photos, scripts, and reference assets submitted to the API.

Authoritative sources

LlamaGen API documentationOpenAPI specificationCurrent pricingTermsService status

Related evaluation paths

FormatStory-to-Comic API for Scripts and Story BriefsFormatCharacter Consistency API for Multi-Panel ComicsSolutionComic API for Publishing Workflows

Next step

Move from evidence to a real API request.

LlamaGen provides the playground, API key, usage, billing, and authoritative service documentation.

Generate a vertical example