DeepSeek Coder V2 fails in OpenCode: No Tooling Support ?!

[SkybuckFlying]

Not sure if ollama or opencode issue:

To re-produce:

1. Download DeepSeek Coder V2:

https://ollama.com/library/deepseek-coder-v2:16b

2. Run:

ollama -serve

3. Run:
   opencode

4. Select model.

Try and talk to it...
What is the issue?

API Call Error ?!
Relevant log output

AI_APICallError: registry.ollama.ai/library/deepseek-coder-v2-16B-20K-ContextWindow-16GB:latest does not support tools

OS

Windows
GPU

Nvidia
CPU

AMD
Ollama version

v0.12.5

Also filed on ollama github:
ollama/ollama#12592

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• llama2 example doesn't work AI_APICallError: registry.ollama.ai/library/llama2:latest does not support tools #303: Same exact error message "AI_APICallError: registry.ollama.ai/library/llama2:latest does not support tools" with Ollama models
• qwen3-coder:latest does not support tools #1619: "qwen3-coder:latest does not support tools" - same underlying tool support issue with Ollama
• Tool use with Ollama models. #1068: "Tool use with Ollama models" - discusses general tool calling problems with Ollama models including tool call failures
• Tool Calling Issues with Open Source Models in OpenCode #234: "Tool Calling Issues with Open Source Models in OpenCode" - comprehensive issue about tool calling problems with various open source models including case sensitivity and compatibility issues
• not being able to write files when using local models #590: "not being able to write files when using local models" - similar issue where tools aren't being executed with local models
• Local Ollama tool calling either not calling or failing outright #1034: "Local Ollama tool calling either not calling or failing outright" - very similar symptoms with Ollama models

The core issue appears to be that certain Ollama models don't support tool calling functionality, which is required for OpenCode's operation. This is a known limitation with various open source models served through Ollama.

Feel free to ignore if none of these address your specific case.

[rekram1-node]

This is ollama telling you the model doesn't support tools, if you wanna talk to it in opencode you need to set tool_call to false so that opencode knows it doesn't support tools

Example:

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "ollama": {
      "models": {
        "deepseek-coder-v2:16b": {
          "tool_call": false
        }
      }
    }
  }
}

[shawal-mbalire]

This worked for me to load deepseek coder
but the no support for tool support means I can not use the agentic functionality
right?

[rekram1-node]

If the model doesn't support tools then it won't be great for agentic work

[shawal-mbalire]

But creating a research agent out of it could be worthwhile
Just let it do it's think and use the results

[rekram1-node]

it could be useful for summarizing or explaining something but it won't be able to acquire new information so it can't really research.

And then any other model that can use tools would be just as good at summarizing / explaining (because u can disable tools to avoid noise)

[shawal-mbalire]

I see I guess I will stick to qwen coder for now. Thanks alot