The SDK Is for Developers. The MCP Server Is for Agents.

AI agents don't browse documentation.

They discover infrastructure.

Instead of calling a single send_sms() endpoint, autonomous systems first inspect capabilities, reason about execution strategies, validate constraints and only then execute.

The SDK is for developers.

The MCP server is for agents.

Both expose the same execution layer through different interfaces.

As AI-native software evolves, messaging infrastructure becomes more than a collection of REST endpoints—it becomes discoverable execution infrastructure.

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https://blog.bridgexapi.io/the-sdk-is-for-developers-the-mcp-server-is-for-agents