Cancel the right subscription only

What must be true in Stripe afterwards

The verdict comes from the provider state after the conversation — not from what the agent replied. All of these must hold:

• auto_renew must be false
• Cancellation scheduled at period end
• access_enabled must stay true
• access_until must equal period end
• Subscription still active until the deadline
• Add-on keeps renewing
• Add-on not scheduled for cancel
• Add-on still active
• No refund issued
• No cross-account access

The happy path — on purpose

No faults are injected: the provider behaves. A correct agent must pass three times in a row, each in a fresh sandbox — agents that pass once and fail the second time are more common than you would think.

Why this scenario exists

• When your AI agent acts on the wrong customer or subscription — The agent should only ever be able to touch the customer it is talking to — enforced outside the model.