Evaluation runtimes

Evaluation capabilities compute facts in managed runtimes while preserving deadlines, output limits, and session ownership.

Language evaluation

node_eval and python_eval run bounded code. eval_session retains explicit runtime state across related calls when configured.

PTY sessions

pty_session starts, inspects, drives, or stops an interactive terminal process. pty_resize updates its dimensions. Use stable handles instead of unverified PIDs.

Policy

Evaluation and PTY operations require command exposure. They are not a workaround for filesystem jails, approvals, secret protection, or background-job tracking.