A2A Guard: selling tools

Evidence for A2A Guard: 1. Evidence pack · 2. Answers to buyer questions · 3. Figures & benchmarks · 4. Selling tools · IHVRK kit · Learn it

The evidence is your best sales tool: a buyer can check it without trusting you. Press Copy on any box, fill in the [brackets] and send it, one person at a time.

What to send, and when

When	Send this
First message	A short personal note with the kit page
They reply, "show me"	The live demo on a call, using the script below
"Send it to our engineer"	The kit and the evidence pack
Security review or questionnaire	The answers page. Never upgrade a NO to a YES.
Finance or procurement wants records	The figures page and figures.tsv
Ready to go ahead	The hand-off below. The founder does the contract, price and setup.

Who to approach

Head of AI platform: Trusting outside agents.

Questions to ask them

Which agents talk to outside agents?
How is trust decided today?

30-second pitch

A2A Guard makes AI agents' business cards tamper-proof: change one word and the card is rejected.

We recorded 5 live checks, including 4 attack cases it had to refuse or flag, and every one matched. You can re-run them yourself without an account.

Don't trust us. Check it: https://cainstudio.online/ihvrk-a2a-guard.html

First email

Subject: is your agent's card tamper-proof?

Hi [first name],

AI agents trust each other based on their A2A Agent Cards, which anyone can copy and edit.
A2A Guard signs cards and rejects any edited copy.

Live demo: https://cainstudio.online/guide-a2a-guard-lab.html

The evidence: We recorded 5 live checks, including 4 attack cases it had to refuse or flag, and every one matched. You can re-run them yourself without an account.
Check it yourself: https://cainstudio.online/ihvrk-a2a-guard.html

[your name], working with FIRME AI CORPORATION
[your postal address]
If you'd rather not hear from me again, just say so and I won't write again.

LinkedIn connection note (under 300 characters)

Hi [name], we make A2A agent cards tamper-proof: one edited word and the card is rejected. Happy to show it.

One follow-up, three days later (then stop)

Hi [first name], demo: https://cainstudio.online/guide-a2a-guard-lab.html

Live demo call script

1. Show the normal case
   Do: Open https://cainstudio.online/guide-a2a-guard-lab.html and run: The original, untouched card verifies
   Say: The registered card matches its signature.

2. Now the attack
   Do: Run: Copy with 'transfer_funds' added
   Say: One added capability breaks the signature.

3. Now the attack
   Do: Run: Copy with 'wire_transfer_unlimited' added
   Say: Same: rejected.

4. Let them check you
   Do: Send the kit link and ask them to run python3 verify.py --live on their own computer.
   Say: They don't have to take your word for any of this. That's the point.

5. Say the limit yourself
   Do: It proves a card was not changed since it was signed; it does not prove the agent behind it is honest.
   Say: Say it before they ask. It costs nothing and it earns trust.

When they push back

Does it prove the agent is honest?

No, it proves the card wasn't changed. Honesty needs the other controls.

Why should I believe your numbers?

You shouldn't have to. Run the kit on your own computer: https://cainstudio.online/ihvrk-a2a-guard.html. It re-sends every request and compares the answers, using no code of ours.

What doesn't it do?

Written down here: https://cainstudio.online/guide-a2a-guard-limits.html

Are you SOC 2 or ISO certified?

No, we hold no certification. What we offer instead is evidence you can check yourself.

Has anyone independent tested it?

No third-party audit has been completed. The attack cases in the kit are our own. I'd rather tell you that now.

Who else uses it?

We are an early company. I can show you the product working and the evidence, not a customer list.

It found nothing. So we're safe?

No. It means none of its checks fired. It doesn't prove something is safe.

How much is it?

Sell A2A Guard as the $500 30-day pilot.

One-page summary (paste into a document or email)

A2A Guard
by FIRME AI CORPORATION, a California corporation

What it does
A2A Guard makes AI agents' business cards tamper-proof: change one word and the card is rejected.

The evidence
We recorded 5 live checks, including 4 attack cases it had to refuse or flag, and every one matched. You can re-run them yourself without an account.
Recorded 2026-11-03. 5 live checks. Median round trip 97 ms including network; this is not a load test or an SLA.

Check it yourself
https://cainstudio.online/ihvrk-a2a-guard.html
Zip SHA-256: 8d2cea06283d5058a99414bd6eb2deb77e3f4b432de72a085b79583ed1d19705
Signing key fingerprint: 1cacdfc1fc2024b6bb4f8fb02c7c80f4a57f44c5adb11c507190781b5d613de3
Run: python3 verify.py --live  (Python 3, no account, no code of ours)

What it does not do
Written down here: https://cainstudio.online/guide-a2a-guard-limits.html

What this is not
Not a third-party audit, a certification or a guarantee. No SOC 2 or ISO certification is held.

Contact
[your name], working with FIRME AI CORPORATION, [your email]

After the call: the proposal email

Hi [first name],

Thanks for your time. As discussed, here is what I suggest for A2A Guard.

What you told me: [their problem, in their words]

What we'd do: Sell A2A Guard as the $500 30-day pilot.

Evidence you can check before deciding: https://cainstudio.online/ihvrk-a2a-guard.html
Answers for your security review: https://cainstudio.online/evidence-a2a-guard-answers.html
Figures for your files: https://cainstudio.online/evidence-a2a-guard-figures.html
Limits: Written down here: https://cainstudio.online/guide-a2a-guard-limits.html

Next step: [date], [who]. The founder, Vincent Noriega, handles contract and setup.

[your name], working with FIRME AI CORPORATION
[your postal address]
If you'd rather not hear from me again, just say so and I won't write again.

Hand-off to the founder

To: vincent@firmeai.com
Subject: Lead: A2A Guard - [company]

Company: [company]
Person: [name], [job title], [email]
What they said: [paste their reply]
Evidence already sent: https://cainstudio.online/ihvrk-a2a-guard.html
Price mentioned: [what you quoted, or none]
Next date: [date]

The rules

Send each message yourself, one person at a time. No bulk lists and no automated sending.
Commercial email needs your real name, a real postal address and a way to opt out, and you stop when someone asks (US CAN-SPAM; many countries are stricter, so check yours).
Never change a number, invent a customer, or say certified, audited or guaranteed.
Only test a system the client owns or operates, after they confirm it in writing.
Your share is agreed in writing with FIRME AI CORPORATION before your first message (email vincent@firmeai.com). Nothing here promises income. Most messages get no reply; that is normal.