APIs Reimagined: Why Agents Need MCP Instead of REST

As AI systems transition from assisting humans to autonomously reasoning through multi-step workflows, the decades-old REST API interface becomes a friction point. MCP standardizes how agents discover and invoke tools by abstracting away transport details (HTTP verbs, pagination, auth) and exposing capabilities directly—much like REST/OpenAPI did for human developers. This shift signals a fundamental change in the API economy: tomorrow's integrations will be optimized for machine reasoning, not human comprehension.