Understanding Agentic AI: Runtime Skill Catalog
Definition of Runtime Skill Catalog
A runtime skill catalog in Agentic AI is the collection of skills that are available to an AI agent for consideration and use while it is actively performing a task. Each skill represents a defined capability, procedure, workflow, or set of instructions for handling a particular type of requirement or subtask, such as information retrieval, document analysis, data processing, content generation, validation, or interaction with an external tool. The catalog provides the agent with an organized set of possible skills from which relevant ones can be identified and selected according to the current task, rather than requiring every available skill to be applied. It may contain skills that are permanently available in the agent’s environment as well as skills that become available dynamically because of the current configuration, connected tools, user permissions, task context, or other runtime conditions. In this sense, the runtime skill catalog describes the agent’s currently accessible skill space: it indicates what skills the agent can potentially use at a particular point during execution, while the actual skills triggered for a task form only a task-relevant subset of that catalog.
Conditions for the Runtime Skill Catalog to Hold in Agentic AI
A runtime skill catalog holds when the agent has access, during task execution, to a defined and discoverable set of skills whose availability and applicability can be determined from the current runtime environment. For a skill to meaningfully belong to the catalog, the agent should be able to identify the skill and obtain sufficient information about what it does, when it should be used, what inputs or resources it requires, and any constraints governing its use. The skill must also be operationally available under the current conditions; for example, required tools, resources, permissions, dependencies, or execution capabilities must either already be available or be obtainable through an explicitly supported procedure. The catalog does not require every listed skill to be relevant to every task, because skill selection occurs after the agent interprets the current requirements and determines which available skills correspond to them. Its contents may therefore remain fixed for an execution session or change dynamically as tools are connected, permissions change, additional skills are discovered or loaded, or environmental conditions change. If a nominally defined skill cannot be discovered, accessed, interpreted, or executed under the current runtime conditions, it should not normally be treated as an immediately usable member of the agent’s runtime skill catalog, even if that skill exists elsewhere in the broader system.