AI agents often need domain-specific knowledge to complete tasks. Rather than writing custom prompts or building MCP tools from scratch, leveraging existing API documentation is a practical approach - and OpenAPI is the de facto standard with battle-tested specifications maintained over years.

However, feeding raw OpenAPI specs to agents has limitations. Complex specifications can exceed LLM context limits, and even when they fit, loading the entire document for every request wastes valuable context.

Agent Skills solves this by structuring documentation for on-demand reading. Agents load only what they need - starting with an overview, then drilling into specific operations or schemas. Since file reading is a universal capability across agent frameworks, this approach works everywhere without special integrations.