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Original source1 min read

Quoting Sean Lynch

Summary

Sean Lynch comments on Hacker News about the value of MCP (Model Context Protocol), highlighting its ability to isolate the auth flow outside the agent's context window and potentially out of the harness entirely. He suggests the idealized MCP might just be an auth gateway, but that alone would be a win.

Quoting Sean Lynch
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A quote from Sean Lynch

Simon Willison’s Weblog

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19th June 2026

The real valuable capability MCP offers over skills/CLI is isolating the auth flow outside of the agent’s context window, and potentially out of the harness completely. [...]

Maybe the idealized form of MCP is just an auth gateway for the API and nothing else. That’d still be a win.

— Sean Lynch, comment on Hacker News

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This is a quotation collected by Simon Willison, posted on 19th June 2026.

ai 2,081

generative-ai 1,838

llms 1,806

model-context-protocol 27

skills 13

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Key points and analysis

Article intelligence

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Key points

  • MCP's key advantage is isolating auth flow, addressing context window limitations.
  • The idealized MCP could be solely an auth gateway for APIs, still a win.
  • This perspective emphasizes security and decoupling in AI integration.

Highlights and analysis are generated automatically and may contain errors. Check the original source.