What the reviewer found
A read-only environment checker for *plain projects: it only checks whether CODEPLAIN_API_KEY is set via printenv, explicitly instructed to never echo the value, and tells the agent to avoid curl|sh installs when a package manager exists. It never installs anything or modifies project files.
What was read
The file as it ships in plainlang/plain-forge:
forge/skills/check-plain-env/SKILL.md
What the static scan said
The scan flagged 4things. The reviewer kept 0 and dismissed 4 as false.
E2Harvests environment variables — false positivePE2Asks for root — false positiveSC2Downloads and executes remote code — false positiveNETMakes network calls — false positive
How this review was made
Sonnet 5 read the files above on 7 September 2026 and answered three questions: is it dangerous to whoever installs it, is each scanner finding real, and what should the installer know. The verdict is bound to the file's hash; when the file changes, it is scanned afresh and reviewed again. A script that changes while the definition does not is not re-reviewed — that is a known gap. How the scan and the review work.