Create an image

POST/v1/images/generations

Create an image.

Compatible with OpenAI's create-image endpoint: the body is forwarded to the provider as sent (with a virtual key, a provider/ prefix on model is removed first) and the generated images are returned. model is required (400 without it). OpenAI credentials only; any other provider is a 422.

Authenticate with a BYOK virtual key or with x-provider and x-api-key; a PLATFORM virtual key is a 400. The key's checks, the plan's limits and the organization's approved-provider policy (403) apply. The call is priced per image from the model, size, quality and n, and the cost is in the x-operation-cost-usd response header. Without x-retry-count a failed call is retried up to 3 times on 429 and 5xx.

Compatible with the OpenAI Images API (create image). The request and response bodies are the provider's own format, passed through by the gateway: see the OpenAI Images API (create image) reference for every field. The credentials and headers below are what VectorAxis adds.

Authorization

AuthorizationBearer <slug>.<secret>
A virtual key's API key (vk-....<secret>), as Authorization: Bearer. What the OpenAI SDK sends from its api_key. Used by the inference endpoints.
orx-virtual-keyheader
A virtual key's API key in the x-virtual-key header, for clients that keep Authorization for something else.
orx-api-keyheader
Direct credentials: the provider's own API key in x-api-key, with the provider named in x-provider (for example openai). On /v1/messages a virtual key is accepted in x-api-key too, which is what the Claude SDK sends.

Headers

x-providerstring
With direct credentials: the provider x-api-key belongs to, for example openai or anthropic (case and dashes are normalised). Not used with a virtual key.
x-retry-countinteger<int32>
How many times to retry a failed provider call, 0 to 5. Without the header, chat completions, Claude Messages and prompt completions do not retry, and the other endpoints retry up to 3 times. Retries back off exponentially from 1 second and honour a numeric Retry-After. The number made is in the x-retry-count response header.
x-retry-status-codesstring
Comma-separated provider status codes to retry on. Default 429,500,502,503,504,529.

Responses

200application/json

Request

curl -X POST "https://api.vectoraxis.ai/v1/images/generations" \
  -H "Authorization: Bearer $VECTORAXIS_VIRTUAL_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "key": {}
}'

VectorAxis is built by GK Labs, a member of NVIDIA Inception.