Vercel's deepsec security harness drops to one command with per-step checkpointing.

npx deepsec init now sets up a repo and runs its first review in a single command: creates an isolated .deepsec/ workspace, configures model access via AI Gateway or custom keys, generates a codebase description and attack-surface map, runs pattern scans for coverage gaps, then AI-reviews flagged files. The detail that matters operationally is that it checkpoints after each step, so a run killed by a closed process or a resource limit resumes instead of restarting. Separately, Vercel Connect now configures all 100+ connectors end-to-end from the CLI, making connector setup scriptable in CI and agent workflows.