🛠️ Combine Ollama Tools 🛠️

Small, boring, necessary. OllamaAgent takes exactly one tools input, but tool-calling only gets interesting once your agent has options - web search and a file reader and a custom Python function, say. This node's whole job is merging up to four separate OLLAMA_TOOL outputs (Web Search, Read File, Custom Python Code, or any combination) into the single bundle the agent expects.

Think of it as a junction box, not a feature. If you only ever give your agent one tool, you don't need this node at all - just wire that tool straight into OllamaAgent's tools input. It only earns a place in your graph the moment you're stacking two or more.

How it works

Each of the pack's tool nodes (OllamaTool_WebSearch, OllamaTool_FileSearch, OllamaTool_PythonCode) outputs an OLLAMA_TOOL value describing that tool - its name, its function signature, whatever the agent needs to decide when and how to call it. This node just concatenates however many of those you've plugged in and re-emits them as one OLLAMA_TOOL value the agent can consume. There's no ordering logic, priority, or dedup to think about - it's a merge, not a router.

The inputs and outputs that matter

• tool_1 is required - you need at least one tool going in for this node to do anything.
• tool_2, tool_3, tool_4 are optional - fill in as many as you're actually using, up to four total. Leave the rest disconnected.
• Output is a single tools value, type OLLAMA_TOOL - wire it directly into OllamaAgent's optional tools input.

That's the entire interface. No widgets, no settings, nothing to tune.

How to install it

Part of the same pack as everything else here - install once, get every node including this one. Via ComfyUI Manager, search "ComfyUI-Ollama-Describer" and install. Manually:

cd ComfyUI/custom_nodes
git clone https://github.com/alisson-anjos/ComfyUI-Ollama-Describer.git
pip install -r requirements.txt   # or install.bat on Windows

Restart ComfyUI. Nothing about this node itself needs Ollama running - it's pure graph plumbing - but the tools you're feeding it, and the agent consuming its output, absolutely do.

Common issues & troubleshooting

The only real trap is forgetting this node exists at all and trying to wire two tool outputs into one input slot - ComfyUI won't let you, and that's the signal you need this combiner in between. Past that, there isn't much to go wrong here: if your agent isn't calling a tool you expect it to, the problem is almost always upstream - either that tool wasn't actually connected to a tool_N slot on this node, or the agent's model just isn't strong enough at tool-calling to reliably decide to use it (see the OllamaAgent article for which models actually handle that well).