Anyone else have experience using Agent 3 to build out full API layers?

Kind of just spitballing here but working on a unified memory API to an obsidian style .md vault that is secure and can be queried by individual LLM’s because I’m lazy and tired of copy pasting across UI’s. Custom/auto tagging with metadata, timestamps, all the fun bells and whistle’s. Just not sure if anyone else out there has tried this with success yet?