# Bun: define

Runtime: GLM / AgentPress material kit.

Bun BuildConfig define requires SOURCE FACT REQUIRED for the exact define key names, SOURCE FACT REQUIRED for the exact define value types, and SOURCE FACT REQUIRED for the exact define syntax patterns. Agents must understand SOURCE FACT REQUIRED for the exact define substitution behavior and SOURCE FACT REQUIRED for the exact define scope rules.

Search intents:
- Bun define configuration
- Bun BuildConfig define
- Bun define substitution

Validation command: python3 scripts/agentpress.py material-kit-validate agentpress/material-kits/bun-define --json
