policy: Marketing "Ad Spend Daily Cap" Gate

[akarlaraytu]

📘 Context

A marketing AI agent managing paid ad campaigns across Google, Meta, LinkedIn
must enforce daily, weekly, and per-channel spend caps to prevent budget
runaway from agent-driven optimization loops or hallucinated bid increases.

This policy acts as a deterministic gate before any bid adjustment or budget
increase action, enforcing finance-aligned spending discipline.

🎯 The Goal

Write an ad spend cap policy for a marketing AI assistant.

Variables you can use:

• channel (Enum): "GOOGLE", "META", "LINKEDIN", "TIKTOK", "OTHER".
• requested_action (Enum): "INCREASE_BID", "INCREASE_BUDGET", "CREATE_CAMPAIGN", "PAUSE".
• proposed_daily_spend_usd (Float): Proposed daily budget.
• current_daily_spend_usd (Float): Current actual daily spend.
• monthly_budget_usd (Float): Approved monthly budget.
• month_to_date_spend_usd (Float): Spend so far this month.
• cpa_target_usd (Float): Target cost-per-acquisition.
• current_cpa_usd (Float): Observed CPA in the last 7 days.
• cmo_approved (Boolean): Whether CMO approved the action.

Requirements:

• BLOCK if proposed_daily_spend_usd > current_daily_spend_usd * 1.5 and cmo_approved is False (cap on day-over-day increase).
• BLOCK if month_to_date_spend_usd + proposed_daily_spend_usd * remaining_days > monthly_budget_usd.
• BLOCK if current_cpa_usd > cpa_target_usd * 2 and requested_action == "INCREASE_BUDGET".
• BLOCK if proposed_daily_spend_usd > 5000 and cmo_approved is False.
• ESCALATE if requested_action == "CREATE_CAMPAIGN" and proposed_daily_spend_usd > 1000.
• ESCALATE if current_cpa_usd > cpa_target_usd * 1.5.

📚 Resources

• Start here: docs/getting-started.md
• Check syntax: quickstart/01_hello_world.csl
• See how examples are structured: examples/community/

✅ Definition of Done

Submit a PR with: examples/community/marketing_ad_spend_cap.csl