Similiar to local LLMs support, through Ollama, there are other txt2img APIs.

Apps such as DrawThings (free local image genration) or packages like AUTOMATIC1111's stable-diffusion-webui use this API.

There's an explanation in https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/API.

This would allow get images locally, fully supporting local LLMs and image generation.