CAIN-42 MCPGate
25CAIN-42 Top 25 › Fail-closed doctrine › Seller 5 · Offer and price

The offer, the price and the close

Use fail-closed to answer "what happens when it breaks?", then sell the offer that fits.

What you sell

Not sold on its own (it is the proof)

Use it to win trust; sell one of the paid offers below it.

free price

Turnaround: free, any time · Payment: none

Price source: not in the price book on purpose. Prices are the founder's proposed list prices, not validated market rates; any discount needs the founder's OK.

Also offer

Agent Policy Red Team

Attack the guardrail, prove the patch closes every breach.

$1,500 standard · $3,500 fleet / larger scope

Turnaround: 72 hours · Payment: 100% up front

What the client receives

What the offer itself says about its limits

Price source: cain_audit/products.py → policy-redteam. Prices are the founder's proposed list prices, not validated market rates; any discount needs the founder's OK.

What you need from the client

How to close

  1. Use it to remove doubt.
  2. Move to the right offer.

Copy you can send

First email

Subject: what happens when your AI gate breaks?

Hi [first name],

Most tools let actions through when their own check fails. Ours block. We sent 1,440
malformed requests to test it: https://cainstudio.online/top25-fail-closed-sweep.html

[your name], FIRME AI CORPORATION

LinkedIn connection note (under 300 characters)

Hi [name], quick question for a security engineer: what do your AI controls do when their own check fails?

Follow-up, three days later

Hi [first name], happy to walk through how we tested failure behaviour.

Fill in the brackets by hand for each person. Never paste the same message to a list.

Hand-off to the founder

Email vincent@firmeai.com with: company, person and role, what they said in their own words, which offer, the price you quoted, and the agreed next date. The founder handles scoping, written authorisation to test, invoices and delivery.

Next: the rules, the glossary and the quiz →

FIRME AI CORPORATION · CAIN-42 is a Byzantine trust fabric. Numbers marked "our own check" were run by us, not by an independent party. Nothing on these pages is a certification.