Knowledge Longform

knowledge-longform

Generate a vertical hand-drawn knowledge card — a topic explained as one crayon-style illustrated long image.

Pricing & runtime

Current price: 25 Credits per run
Timeout: up to 180s
Brand Context: Optional — pass a brand_context_id

Prices are calibrated against real run costs and may change — the credit_cost returned when creating a run is authoritative.

Input parameters

Pass these under the input object of POST /api/v1/runs.

Key	Type	Required	Label & description
topic	short_text	Required	Topic
key_points	long_text	Optional	Key pointsEnter one key point per line, or separate items with commas.
style_request	short_text	Optional	Style request
canvas_language	radio	Optional	Canvas languageThe language rendered on the image.Options: Chinese, English
aspect_ratio	select	Optional	Aspect ratioOptions: 1:1, 3:4, 4:3, 16:9, 9:16
extra_notes	long_text	Optional	Extra notes

Request example

Covers every required field. Optional fields follow the same pattern.

curl -X POST https://api.TODO-APP-DOMAIN/api/v1/runs \
  -H "Authorization: Bearer $SUPAMARKETERS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "app_slug": "knowledge-longform",
  "input": {
    "topic": "example text"
  }
}'

What you get back

A 201 response returns run_no, credit_cost, stream_url and result_url (relative paths). Stream progress from stream_url and fetch the terminal result — summary and output — from result_url. Results stay available for the App's retention window (30 days by default).