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Agent architectures

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MCP Is Not Your REST API: 5 Principles

· 6 min read
MCPBundles

Most "MCP integrations" ship as thin wrappers over existing REST endpoints because it's the fastest way to get something working, but that convenience often fights how agents actually reason and act. If you want MCP that agents can use reliably, design it like an action‑oriented RPC interface rather than a collection of CRUD‑style endpoints.

Cartoon illustration of a person explaining MCP is not REST API, showing differences, happy expression
Five practical design rules that make MCP servers agent-first instead of REST wrappers. Learn action-oriented RPC patterns for reliable agent use.