#FastAPI

A Python service that asks a person on camera to face forward, turn right, and turn left, captures one sharp frame per pose, and keeps the three as private evidence for a human reviewer — proving a live person was present, not who they are.

A Python service that signs PDFs to PAdES B-LTA with a visible stamp — embedding the timestamp, certificates, and revocation proof, then an archive timestamp — so signatures stay verifiable long after their certificates expire, and verifies signed PDFs.

Each endpoint is one procedure that carries a request from start to finish, with its concerns in modules beside it — Fowler's Transaction Script as I shape small one-job Python services, bundled into one binary, until their rules outgrow it.

Each project began with its interface served from inside the borrowed Colab runtime, through Colab's own proxy — until Colab warned against it. Moving the interface out made the runtime a pure worker, and left two codebases held together by nothing but an agreement.