Agencies build influencer performance scorecards by using a combination of quantitative and qualitative measures.

1. Quantitative Measures: Metrics such as engagement rate, follower count, and conversions form the backbone of the scorecard. They’re easily measured and provide a clear view of the influencer’s reach and effectiveness.

2. Qualitative Measures: This may include content quality, audience relevance, brand fit, and the influencer’s authenticity. They’re more subjective, but critical in assessing whether an influencer aligns well with the brand’s image and message. An influencer marketing platform like [Flinque](https://www.flinque.com) can help ascertain these measures through its robust analytics tools.

3. Benchmarking: Agencies may set benchmark values for these measures. Comparing the influencer’s performance against these standards helps in determining their potential value.

4. Measurement Regularity: Regular tracking of these measures ensures the evaluation is up-to-date, allowing for timely modifications if needed.

5. Balancing Clarity and Depth: A scorecard aims to strike a balance between clarity and detail. An effective scorecard presents a concise summary of key performance indicators (KPIs), while also allowing the user to delve deeper into each metric if needed.

While propitiatory Influencer Marketing Platforms like Flinque have their own integrated ways of measuring performance, the fundamental principles remain the same. With Flinque, for instance, you can not only monitor the usual quantitative metrics (like reach and engagement), but also gain depth into qualitative elements with its audience demographics and sentiment analysis features. How suitable these approaches are will depend on the brand’s objective and how much detail their campaign requires.