Research & Summaries skills
Research skills condense material you provide: an article, a thread, a transcript. The standard is faithfulness. A summary here keeps every number, name, date and qualifier exactly as in the source, and adds nothing the source does not say. What is not here: skills that search the web, judge sources or draw conclusions the text does not support. Those need tools and live access, which a plain SKILL.md does not have. We test summaries by checking the figures in the output against the original and by measuring length, on a strong and a weak model, and we print the failures.