# Environment Variables

> Progressive-disclosure route to the root canonical environment-variable registry. Use the registry for names, defaults, behavior, ownership, and security notes.

- Skill: `lingtai-ai/environment-variables` (Agent Skill)
- Install (CLI): `npx skillmds@latest add lingtai-ai/environment-variables`
- Raw SKILL.md: https://api.skillmd.com/api/skills/lingtai-ai/environment-variables/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- Author: lingtai-ai (https://skillmd.com/u/lingtai-ai)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/lingtai-ai/environment-variables

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# Environment-variable registry router

The canonical environment-variable reference is the repository-root
repo-root `ENVIRONMENT_VARIABLES.md`.

Use that registry for the complete table, defaults, accepted values, scope,
read/reload timing, invalid-value behavior, implementation owners, and security
notes. This page exists only as a progressive-disclosure route from the system
manual; runtime source remains the behavioral authority.