# Scan evaluation How do we determine what passes? Using a garak evaluator. Once the harness has had the probes send prompts to the generators and processed the outputs with detectors, the result is a list of scores. Evaluators detemine what scores pass or not. Scores are between 0.0 and 0.5. The default evaluator is ThresholdEvaluator, which considers and score of 0.5 of higher a "hit". --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.garak.ai/garak/garak-components/scan-evaluation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.