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Developer analysis reveals OAuth slows Claude Code connections 5.8x

A developer analyzed connection logs from Claude Code, revealing that OAuth token refreshes significantly increase connection latency, making them up to 5.8 times slower. The analysis, based on 35 days of data from a single machine, also found that while stdio transport is faster on average, HTTP servers offer more predictable performance. Furthermore, the study highlighted that sessions often connect to multiple servers, leading to cumulative connection times that can exceed 35 seconds for 90% of sessions, with nearly a third of sessions spending over 10 seconds just establishing connections. AI

IMPACT Highlights performance bottlenecks in developer tools integrating LLMs, suggesting areas for optimization in client-server communication.

RANK_REASON Analysis of personal usage data and technical findings, not a formal release or research paper.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Developer analysis reveals OAuth slows Claude Code connections 5.8x

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4 / 100
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Analysis of personal usage data and technical findings, not a formal release or research paper.
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infra, product
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Breaking (< 6h)
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  1. dev.to — MCP tag TIER_1 English(EN) · אחיה כהן ·

    I Measured 27,257 MCP Connections. The p90 Session Waits 35s.

    <p>In July I wrote a 56-line shell script called <code>mcp-optional</code> whose entire job was to <strong>remove</strong> two MCP servers from my config.</p> <p>Not fix them. Remove them.</p> <p>Both were stdio servers, so each one spawns its own Node process <em>per session</em…