Marketing skill for Claude with 26 evals – +20pp over baseline (github.com)

A new skill for Claude has been introduced, significantly enhancing marketing capabilities by utilizing a progressive disclosure approach. This innovative skill features a lightweight routing layer that selectively loads nine specialized reference modules relevant to specific marketing tasks, eliminating unnecessary context and streamlining output. This method has achieved a notable performance improvement, increasing the mean pass rate to 82.7%, up 20.4 percentage points over the baseline. It effectively responds to various prompts, such as generating targeted marketing copy and reviewing existing assets, while remaining adaptable across different platforms that support the open SKILL.md format. The significance of this development lies in its structured approach to copywriting, which emphasizes outcome-driven communication rather than generic marketing language. By enforcing quality checks known as Gate A and Gate B, the skill ensures that it first clarifies audience needs and goals before generating content, fostering specificity and honesty in messaging. This detailed framework not only aids marketers in crafting compelling copy but also addresses critical branding and strategy aspects, making it a valuable asset for AI/ML practitioners invested in enhancing marketing automation and effectiveness.