They make the support agent sound "friendlier." It still replies perfectly. Nothing looks wrong. They ship it.
support_agent / system_prompt.txt+1 −1
12- Always confirm refund eligibility and cite Policy 3.1.
12+ Be warm and empathetic. Offer to connect them with support.
deploy #204
building…
● AgentProof · validating in background
Checking behavioral contracts before release…
Semantic Drift
0%
drift
contracts0 / 4
regressions0
statusRUNNING
Deployment Gate
BLOCKED
Deployment prevented. Customers never experienced this regression.
Drift
75%
Regressions
3
Judge confidence
89%
Customer impact
High
Watch the regression happen
The same answer, quietly rewritten.
Behavioral contracts fall away one by one.
User"I bought this jacket 3 weeks ago but it doesn't fit. Can I get a refund?"
Agent · before the changePASSING
You're eligible for a refund — purchases within 30 days qualify under Return Policy Section 3.1. I'll process this for you right now. I completely understand your frustration! Our support team would love to help — feel free to reach out and they'll sort this out for you.
AgentProof