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Stateless MCP vs. REST: Performance comparison reveals subtle differences

A recent analysis compared the stateless Model Context Protocol (MCP) with REST APIs, running 180 tests to determine if MCP is effectively just REST with extra steps. The experiment involved exposing a backend service through both MCP and REST interfaces to an AI model, using Claude Haiku 4.5 on Amazon Bedrock. Initial findings suggest that for a small set of tools, both protocols perform comparably in terms of correctness, token usage, and latency. AI

IMPACT Provides empirical data on protocol efficiency for AI model interactions, aiding developers in choosing optimal interfaces.

RANK_REASON The item details a comparative analysis and experimental results of two protocols. [lever_c_demoted from research: ic=1 ai=1.0]

Read on dev.to — MCP tag →

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Stateless MCP vs. REST: Performance comparison reveals subtle differences

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The item details a comparative analysis and experimental results of two protocols. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. dev.to — MCP tag TIER_1 English(EN) · Edoardo Dusi ·

    Is stateless MCP just REST? I ran 180 tests to find out

    <p>In July 2026 the Model Context Protocol <a href="https://blog.modelcontextprotocol.io/posts/2026-07-28/" rel="noopener noreferrer">dropped sessions</a>. The handshake is gone, the <code>Mcp-Session-Id</code> header is gone, and every request now stands on its own. Within a wee…