Conditional-Access on Nitin Kumar Singhhttps://nitinksingh.com/tags/conditional-access/Recent content in Conditional-Access on Nitin Kumar SinghHugo -- gohugo.ioen© 2026 Nitin Kumar Singh. All rights reserved.Tue, 14 Jul 2026 09:00:00 +0530The OBO Chain Through MCP: Passing User Identity from an Agent to Microsoft Graphhttps://nitinksingh.com/posts/obo-chain-through-mcp/Tue, 14 Jul 2026 09:00:00 +0530https://nitinksingh.com/posts/obo-chain-through-mcp/How an AI agent reaches Microsoft Graph as the signed-in user through MCP — why token passthrough fails, and how on-behalf-of, Conditional Access, and RBAC secure the chain.