User j4ck.xyz has announced the development of an experimental personalized feed on Bluesky that leverages OpenAI's GPT-OSS model. The feed generates clusters of followed accounts based on the user's likes, creating a curated timeline. This project, described as "vibe coded" with Claude 4 Sonnet and GPT-5 in Visual Studio Code, utilizes the atproto MCP server. This development highlights a growing trend of user-driven innovation within the AT Protocol ecosystem, where individuals are building sophisticated tools to enhance their own social media experience. The use of multiple large language models for development and the focus on "vibe" suggest a qualitative, rather than purely algorithmic, approach to feed curation.