Do AI agents still need MCP if they can read API docs?
MCP was designed to give AI a standard way to use outside tools and APIs. Newer AI agents can sometimes skip a dedicated , read a website or as needed, and work out how to call an API. This direct approach can work well with a clearly documented REST API.
It can struggle when is poor, calls must share state, or are complicated. It remains unresolved whether MCP will keep an advantage in , , token use, and , or serve mainly as a temporary bridge until agents become better at understanding on their own.
Key points
- MCP standardizes how AI connects to outside tools and APIs.
- Agents can directly read for a well-documented REST API.
- Poor , shared state, and complex make direct access harder.
- No measured evidence shows which approach uses fewer tokens or works more reliably.