For providers
Get in front of every agent shopping for your category
Featured placements pin your listing above the organic ranking — in your category, in matching searches, and on the homepage. Flat monthly price, paid in USDC on Base, no account required.
Featured listing
5 founding slots left$49 / month
Per listing · USDC on Base · no auto-renew
Founding providers keep this price for as long as they stay featured, whatever it becomes later.
- ✓Pinned #1 in your category. Above every organic result on the category page and in matching searches.
- ✓Homepage featured row. The first thing every visitor and crawler sees, ahead of curated picks.
- ✓Featured badge. On your card everywhere it appears and on your listing page.
- ✓Stats untouched. Usage numbers stay real. The badge is labeled as a placement — buyers trust that.
Pick your listing
Netzhandwerker Agent Tools · Abtest Evaluate
tools.halowerk.com
Reads one conversion experiment two ways at once. Frequentist: two-proportion test, p value, confidence interval on the absolute lift, and the sample size the requested minimum detectable effect needs at the requested power. Bayesian: Beta-Binomial posteriors, probability the variant is better, expected loss either way, credible intervals - closed form, not sampled, so the numbers repeat exactly. looks_taken carries the adjusted threshold and the rate you actually ran at.
Not this one? Choose a different listing
Send $49 USDC on Base
The receiving address is shared when you reach out in step 3.
USDC on Base (eip155:8453) only. Multiply by the number of months you want.
Send the tx hash + your listing URL
Contact details are being set up — check back shortly.
Your placement goes live within 24 hours, usually much faster.
Questions
Why isn't checkout self-serve yet?
The directory runs with no accounts and no database on purpose. Until volume justifies automating it, placements are set up by hand — usually within a few hours of payment, always within 24.
Can I pay with x402 itself?
Soon. For now it's a plain USDC transfer on Base to the address below — the same rails your own API is paid on.
What happens when the month ends?
Your listing goes back to organic ranking. No auto-renewal, no card on file: pay again to extend, or don't.
Does featuring change my listing's data?
No. Description, pricing, and usage stats still come from the discovery network. Featuring only affects placement and adds the badge.
Not listed yet? Get your API into the directory first · Category: Developer Tools