Solution · Chat and agent products
People rotate emails to keep chatting for free.
Chat and agent products invite long sessions. Darkmeter spots the same person across accounts and meters the whole session, not just one login.
What you are seeing
Why do some free users chat all day?
A long conversation can burn a lot of credits. If every new email resets the allowance, the free tier becomes unlimited for anyone willing to repeat the signup.
- Long conversations burn many credits for one user.
- People rotate emails to keep chatting for free.
- Agent runs and long chats both pile up credits fast.
- A new email resets the allowance if the meter belongs to the account.
Along the whole flow
A conversation
Darkmeter sits at four points along the way. Each one is a call your backend already makes, and a decision you control.
1 · Start
Someone opens the chat with a new email.
Matches the device and look-alike emails.
Signup GuardAllow4 · Ask, then pause
The evidence builds up.
Asks to verify when unsure, and pauses at the cap.
Usage GuardCool down
Case by case
The situations you will actually meet.
Pick one. See the call your backend makes, what Darkmeter answers, and what the person is shown.
Your backend ⇄ Darkmeter
Illustrative situations and wording. Verdicts and reason names are a preview of the planned API.
Before and after
A long chat, twice
An illustration, not a measurement: the same events, with the decision made at the right moment.
Without Darkmeter
- A person chats for hours on a free plan.
- The allowance runs out.
- They sign up with a new email.
- The chat carries on for free.
With Darkmeter
- A person chats for hours on a free plan.
- The meter follows the device.
- A new email joins the same meter.
- The pause lasts as long as you chose.
Questions
Bring us your free tier.
Tell us how your free tier works and where it leaks. We will map it to the four points above.