A simplified node that provides access to Ollama. It allows you to send prompts, system prompts, and images to your Ollama instance and receive text-based responses.

⚠️ Requirements

You must have Ollama installed and running on your local machine for this node to function. You can download it from https://ollama.com/.

🚀 Features

Direct Ollama Integration: Seamlessly connect to your local Ollama instance.
Automatic Image Detection: The node automatically detects if an image is connected and sends it to Ollama for multimodal analysis.
System Prompt Support: Utilize the system parameter in the Ollama API for more control over model behavior.
Dynamic Prompt Templates: Easily load your own system prompts from .txt files in the prompts directory.
Multiple Image Inputs: Input up to five images for analysis.
Easy Configuration: Quickly set up your Ollama URL via a config.json file.

📦 Installation

Clone the Repository: Navigate to your ComfyUI/custom_nodes directory and clone this repository:

    git clone https://github.com/BobRandomNumber/ComfyUI-BasicOllama.git

Install Dependencies: Navigate to the newly cloned directory and install the required packages:

    cd ComfyUI-BasicOllama

    pip install -r requirements.txt

Restart your ComfyUI instance to load the new custom node.

✨ Usage

The BasicOllama node can be found under the Ollama category in the ComfyUI menu. Connect optional image/s to the image inputs to have it automatically included in your prompt if desired.

Inputs

Name	Type	Description
`prompt`	`STRING`	The main text prompt to send to the Ollama model.
`ollama_model`	`COMBO`	A list of available Ollama models on your local instance.
`keep_alive`	`INT`	The duration (in minutes) that the Ollama model should remain loaded in memory after the request is complete.
`saved_sys_prompt`	`COMBO`	A dropdown list of saved system prompts from the `.txt` files in the `prompts` directory. This is used as the system prompt by default.
`use_sys_prompt_below`	`BOOLEAN`	If checked (`True`), the `system_prompt` text box below will be used instead of the dropdown selection. If unchecked (`False`), the `saved_sys_prompt` dropdown is used.
`system_prompt`	`STRING`	A multiline text box for a custom, one-off system prompt. This is only active when `use_sys_prompt_below` is checked.
`image1` - `image5`	`IMAGE`	Up to five optional image inputs for multimodal models. The node will automatically detect and process any connected images.

Outputs

Name	Type	Description
`text`	`STRING`	The text-based response from the Ollama model.

✍️ Adding Custom System Prompts

You can easily add your own reusable system prompts to the saved_sys_prompt dropdown menu.

Navigate to the ComfyUI-BasicOllama/prompts directory.
Create a new text file (e.g., my_prompt.txt).
Write your system prompt inside this file. For example, if you want a system prompt for generating JSON, the content of the file could be:

You are a helpful assistant that only responds with valid, well-formatted JSON.

Save the file.
Refresh your ComfyUI browser window.

The name of your file (without the .txt extension) will now appear as an option in the saved_sys_prompt dropdown. In the example above, you would see my_prompt in the list.

⚙️ Configuration

By default, the BasicOllama node will attempt to connect to your Ollama instance at http://localhost:11434.

If your Ollama instance is running on a different URL/port, you can change it by editing the config.json file located in the ComfyUI-BasicOllama directory:

{
  "OLLAMA_URL": "http://your-ollama-url:11434"
}

🙏 Attribution

A special thank you to @al-swaiti for creating the original ComfyUI-OllamaGemini whose Ollama node served as the foundation and inspiration for this. This project is licensed under the MIT License.