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MCP vs OpenAPI Tooling: When to Standardize on Which (ANSWERED)

Project BasedMCPMedium14 min read

This question tests integration strategy, not religious protocol loyalty.

TL;DR — Quick Answer

OpenAPI excels at describing existing HTTP APIs for generic tool generators; MCP adds a host-native protocol for resources, prompts, capability negotiation, and consistent agent UX. Many enterprises wrap OpenAPI backends behind MCP servers for governance.

The Interview Question

Compare exposing capabilities to LLMs via MCP servers versus OpenAPI-described REST tools. When would an enterprise choose MCP, OpenAPI, or both?

Deep Explanation

This question tests integration strategy, not religious protocol loyalty.

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