MCP, REST, and GraphQL: How the Three Key API Protocols Compare

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Enterprise data architecture is evolving with the rise of AI-native systems, bringing the Model Context Protocol (MCP) alongside established standards REST and GraphQL. REST, dominant since the early 2010s, is built on HTTP verbs and suits traditional client-server applications and simple CRUD operations. GraphQL, introduced by Facebook in 2015, allows clients to request precisely the data they need, making it ideal for complex, nested data relationships across multiple platforms. Anthropic launched MCP in late 2024 as an open standard designed specifically for AI agent-tool interactions, enabling models to discover and invoke external tools through structured calls. Each protocol serves a distinct purpose, and choosing the right one depends on whether the use case involves traditional APIs, flexible data querying, or AI-driven tool orchestration.

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