psc is a CLI tool that uses eBPF iterators to scan processes and file descriptors with Google CEL for filtering. It provides container context for processes by integrating with Docker, containerd, CRI-O, and Podman runtimes. The architecture is modular with separate packages for BPF data unmarshaling, container management, CEL filtering, and output formatting (table/tree). Key strengths include its efficient kernel-level access via eBPF, expressive CEL-based filtering, and intelligent container context propagation to child processes.