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Killfear One
The validation step for your GTM agent
Killfear One, by Killfear Engineering, is the validation step for your GTM agent. Nine checks in one API: phone validation, phone intel, email verification, email extras, email depth, IP intel, domain intel, signup risk and contact check. Email checks return SEND / SEND_WITH_CAUTION / DROP with a reason. Credits never expire. Bounce credit-back up to 5% of monthly credits. No live carrier lookup or inbox verification. Free beta: 100 checks per key.
About Killfear One on Product Hunt
“The validation step for your GTM agent”
Killfear One was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #320 on the daily leaderboard. Killfear One, by Killfear Engineering, is the validation step for your GTM agent. Nine checks in one API: phone validation, phone intel, email verification, email extras, email depth, IP intel, domain intel, signup risk and contact check. Email checks return SEND / SEND_WITH_CAUTION / DROP with a reason. Credits never expire. Bounce credit-back up to 5% of monthly credits. No live carrier lookup or inbox verification. Free beta: 100 checks per key.
On the analytics side, Killfear One competes within API and Developer Tools — topics that collectively have 620.3k followers on Product Hunt. The dashboard above tracks how Killfear One performed against the three products that launched closest to it on the same day.
Who hunted Killfear One?
Killfear One was hunted by Sedra Taylor. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Killfear One including community comment highlights and product details, visit the product overview.
I built Killfear One, by Killfear Engineering, as the validation step for a GTM agent. Contact data gets passed between tools with no check on it, and bad numbers and addresses spread. It is one API with nine checks: phone validation, phone intel, email verification, email extras, email depth, IP intel, domain intel, signup risk and contact check. Email checks return SEND / SEND_WITH_CAUTION / DROP with a reason. Credits never expire. Bounce credit-back up to 5% of monthly credits.
What it does not do: live carrier data, or proving an inbox exists. A valid result means well formed, not that a person answers it.
There is a free try-a-check box on the page with no key. The beta gives 100 checks per key. The first request after idle can take about a minute.
If you run lists, forms or automations, tell me which result you want to see and what is missing. I will answer every comment today.