Verify first, then speak.
It hands you a number with no source, a quote nobody said, and a warm "great idea" for a plan with a hole in it. All in the same calm voice it uses when it's right. SourceProof gives it standing instructions to check before it speaks.
Standing instructions for your AI assistant · works in Claude, ChatGPT and Gemini · nothing to install
You ask a hard question and get a clean, confident answer. Then you go look, and the study it named doesn't say that. The statistic came from nowhere. The quote was close, but not what anyone said. So you stop trusting the answers you can't check, and you check the ones you can. Which is all of them.
An answer made up to sound right. A source that doesn't exist, a figure nobody measured, a quotation stitched together from memory.
Agreeing with you because you seemed to want it. The weak spot in your plan goes unmentioned, and the "great idea" arrives on time.
Both come out in the same confident tone.
SourceProof writes a set of standing instructions, a guardrail, that you paste into the assistant you already use. With it installed:
Ten of these protections are built into every guardrail and can't be removed. The rest comes from your answers.
Most small businesses now use AI for customer email, according to recent industry studies.
No verified data found for that exact question. I can search for a named survey and give you its title, date, and who paid for it. [MEMORY-UNVERIFIED] I recall vendor surveys on this, but vendor numbers often come from the company selling the tool.
Example, simplified for illustration.
It runs in your browser and hands you text for the assistant you already use.
About a dozen questions, one at a time: what you do, the sources you trust, the rules your work answers to, what must never be claimed in your name, what you never want pasted into an assistant, and how you write. Skip any question and you get a sensible default, marked [DEFAULT: REVIEW THIS] so you can find it later.
You get it for Claude, ChatGPT, or Gemini, with step by step install instructions and five test prompts so you can watch it work. The builder calls no AI model. Your answers go into the guardrail exactly as you wrote them.
It goes into the place your assistant keeps standing instructions. From then on, every conversation starts with it.
Your license includes more than one build, so you can rebuild when your work changes. Your most recent build stays saved for 30 days.
Both are one time purchases on Gumroad. Your license key arrives by email.
Your own guardrail for your own assistant. Answer the interview, get it for Claude, ChatGPT, or Gemini with install steps and five test prompts, and rebuild when your work changes. 2 builds.
Get Individual$39 one time · 2 buildsOne shared guardrail for an organization, set once for everyone: approved sources, the rules your work answers to, what must never be claimed in the company's name, and what staff should never paste into an assistant. Includes a one page Staff Quick Card for the people at their desks and Rollout Notes for whoever puts it in place. 5 builds, and it builds personal guardrails too.
Get Team$149 one time · 5 buildsAlready bought? Open the builder and sign in with the email you used.
No. SourceProof runs in your browser at app.diakryon.com and gives you text to paste.
Claude, ChatGPT, and Gemini. You choose when you build.
With your email. We send you a link that works once and expires in 30 minutes. No password.
They stay in your browser while you answer. When you build, they go to our server to assemble your guardrail. No AI model reads them. Your most recent build is kept for 30 days so you can reopen it, then it's gone.
One finished guardrail. Individual includes 2, Team includes 5. Looking at the sample is free and doesn't use one.
A key works on one account. If someone signs in with a different email and pastes it, the key is refused.
No. It gives your assistant standing instructions to check, label, and admit what it doesn't know. You still read what it gives you. That's the point.
$39 one time for Individual, $149 for Team. Answer the interview, paste the result, and your assistant starts checking.
Already have a key? Open the builderSourceProof is a Diakryon product. Diakryon is the product studio of Dennis Winten, who also runs Bible Morning, and a trade name of Bible Morning LLC. More about Diakryon. Questions: info@diakryon.com
Also from Diakryon: PRIME and BylineProof.