AI Alt Text API

Send an image URL, get back a concise, accessibility-ready ALT text. One call, one result — no SDK, no dashboard to configure.

Get a free API key

Generate alt text

curl -X POST https://shop.lumnika.com/v1/alt \
  -H "X-Api-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"imageUrl":"https://example.com/photo.jpg"}'

{ "alt": "Golden retriever running across a grass field at sunset" }

Plans

Plan	Price	Calls / month
Free	$0	5
Pro	$4.99/month	200

Checkout runs on Stripe under "Cosmos Automations" — the registered name behind this API.

Errors

Status	Meaning
401	missing or invalid API key
402	monthly quota reached — upgrade to Pro
400	missing or invalid `imageUrl`
502	the image could not be fetched or read

Notes

imageUrl must be publicly reachable (max 8MB, any image/* content-type).
No account dashboard yet — the API key itself is your account. Keep it safe.