
Worked on security hardening for the modelcontextprotocol repository, focusing on enforcing explicit issuer claim validation in MCP Authorization flows. Developed and integrated logic to require and validate the iss parameter, aligning with RFC 9207 to mitigate authorization mix-up attacks and supporting secure multi-identity provider environments. Updated documentation and metadata handling to comply with RFC 8414, ensuring clear issuer identification and robust metadata discovery. Delivered these changes in a single commit cycle, including comprehensive documentation regeneration and cross-repo reference updates. Utilized JavaScript and Markdown, applying API development and OAuth expertise to improve interoperability and reduce token mis-issuance risks.
Concise monthly summary for 2026-05 focused on MCP security hardening and standard-aligned issuer validation in the modelcontextprotocol repo.
Concise monthly summary for 2026-05 focused on MCP security hardening and standard-aligned issuer validation in the modelcontextprotocol repo.

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