Analysis · curated 30 Jul 2026
Security Best Practices
First reported · updated · 2 reports modelcontextprotocol.io
Coverage timeline
Why it matters
MCP is the connective tissue for agentic AI tool-calling, so reference guidance on its OAuth and proxy attack surfaces helps developers and defenders harden agent deployments against consent-bypass and token abuse.
The official Model Context Protocol security best practices document catalogs attack vectors and mitigations for MCP implementations, including the confused deputy problem in MCP proxy servers that connect to third-party APIs via OAuth. It describes how static client IDs, dynamic client registration, and consent cookies can be combined to obtain authorization codes without user consent, and references OAuth 2.0 and SSRF prevention guidance.