Letting Users Trust Their Own MCP Clients Without Creating a Phishing Risk

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A StreamVessel blog post discusses how to let users trust their own MCP (Model Context Protocol) clients without opening a phishing vulnerability. The article focuses on handling trusted redirect URIs, a mechanism that determines where authorization flows send users after they grant access. It frames the problem as balancing user convenience against the risk that attackers could exploit loose redirect rules to steal credentials. The piece was shared on Hacker News, where it had received 5 points and no comments at the time of capture. The source text provided is limited to the headline and metadata, so the specific technical proposals are not detailed here.

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