My fresh OpenClaw install kept failing. The model wasn’t the problem.

I hit a failure pattern recently that’s way more common than people admit: install OpenClaw connect it to Ollama pull a decent local model test the model directly and it works run the first real agent turn and everything falls apart At that point, most people do the obvious thing: blame the model. Swap Qwen for Llama. Try a bigger model. Try a smaller model. Re-pull weights. Tweak quantization. Repeat. I think that’s usually the wrong first move. The real issue is often prompt baggage, context budgeting, or backend compatibility. Not the model itself. A direct Ollama prompt is a tiny test. An OpenClaw agent turn is not. The tell: direct Ollama works, OpenClaw fails I was reading a thread on r/openclaw where someone on Ubuntu Server said even a brand-new session with just hello could trigger the recurring error. The strange part was that the same model felt “lightning fast and great” when used directly through Ollama with a 4096 context. That’s the giveaway. If this works: curl http://localhost:11434/v1/chat/completions \ -H "Content-Type: application/json" \ -d '{ "model": "qwen2.5-coder:14b", "messages": [ {"role": "user", "content": "hello"} ] }' but OpenClaw falls over on a normal turn, the model is probably not your first problem. You’re usually dealing with one of these: context blowout oversized system instructions too many skills loaded memory payloads getting injected every turn tool schema overhead output reservation settings that are too aggressive OpenAI-compat quirks in the backend That pattern shows up outside OpenClaw too. I’ve seen the same thing in n8n, Make, Zapier, and custom OpenAI-compatible agent stacks: the hello-world prompt passes, then the real automation fails because the production request is much heavier than anyone realized. A “fresh” OpenClaw install is not actually empty This is the part people miss. By the time your local model sees a real OpenClaw turn, it may already be carrying: system instructions tool definitions skill prompts me