Worked on the openid/OpenID4VP repository to deliver a targeted security enhancement that prevents VP Tokens from being misused as Access Tokens within the OpenID4VP workflow. The solution introduced a dedicated security guideline, supported by comprehensive metadata files and practical usage examples, to guide correct implementation and improve credential integrity. Leveraging skills in API development, JSON handling, and YAML configuration, the work emphasized adherence to security best practices. The feature was developed collaboratively, receiving strong governance support and being merged during a working group call, reflecting a mature process and cross-team alignment. No major bug fixes were reported during this period.