Agent environments (OpenClaw, Claude Code, Codex) assume users delegate
credentials to the agent. sops+age added setup friction without real
security benefit since the agent decrypts on every call anyway.
New model: skills declare required env var names; how they are supplied
is up to the agent (own vault, shell env, or ~/.config/k-skill/secrets.env
as the default fallback with 0600 permissions).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>