AI Agents or Skills? Why the Answer Is ‘Both’

Anthropic introduced Agent Skills, modular bundles of expertise that agents can load as needed, addressing scalability problems in current AI agent systems. Traditional agents struggle when capabilities are added through prompt modifications, leading to bloated context windows, regressions, and confusion, forcing teams to create specialized agents for each use case. Agent Skills allow domain experts to contribute procedural knowledge without touching core agent logic, while progressive loading ensures agents only see relevant skills when needed, preventing context overload and enabling unbounded expertise without compromising reasoning ability.