Before an isolated run starts, OpenClaw checks reachable local endpoints for configured `api: "ollama"` and `api: "openai-completions"` providers whose `baseUrl` is loopback, private-network, or `.local`. Local-provider preflight checks walk configured fallbacks and only mark the run `skipped` once every candidate is unreachable; `--fallbacks ""` keeps that walk strict to just the primary model. A down endpoint records the run as `skipped` with a clear error instead of starting a model call. The result is cached for 5 minutes per endpoint (not per job or model), so many due jobs sharing a dead local Ollama/vLLM/SGLang/LM Studio server cost one probe instead of a request storm. Skipped preflight runs do not increment execution-error backoff; set `failureAlert.includeSkipped` to opt into repeated skip alerts.