Context

@vercel/detect-agent checks AI_AGENT as the universal agent variable, then falls back to 9+ tool-specific vars.

Meanwhile, a parallel convention is emerging around AGENT=<agent-name>:

• Goose ships AGENT=goose (PR)
• Amp ships AGENT=amp (docs)
• Bun checks AGENT=1 in its isAIAgent() detection (PR #21135)

There's a community proposal to standardize on AGENT (similar to CI=true): agentsmd/agents.md#136

Question

Would it make sense for detect-agent to also check AGENT alongside AI_AGENT? Converging early would help avoid two competing conventions gaining traction independently.

Happy to open a PR if there's interest.