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Patching the MCP SDK Doesn't Fix It. Pin the OAuth Issuer in TypeScript.

by Bobby Hall Jr

A malicious MCP server could steer an official SDK's OAuth client into sending its secret to the wrong place. Build a tiny MCP client in TypeScript that pins the issuer before it fetches anything. No API key.

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API MCP

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Devto Id
4797601
Reading Time Minutes
10

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