Sponsor the free x402 checker and guides
One sponsor at a time gets a short text line on the free x402 endpoint checker, the x402 facilitator comparison and cost calculator, and every guide, including the facilitator cost guide. $25, paid as 25 USDC on Base, for 30 days.
Our traffic, honestly
This is a small, new site. These are our own server counts for 8 to 13 October 2026 (6 days), from the store’s request log. “Not flagged as bots” means the browser did not identify itself as a bot or script; some of these visits are probably still automated, so treat them as an upper bound.
- x402 checker page: 16 page loads in 6 days, about 3 a day.
- All guides together: 19 page loads in 6 days, about 3 a day.
- Facilitator tool and facilitator cost guide: both launched on 14 October 2026, so there is no traffic data for them yet. They are not included in the guide count above.
- Home page (no sponsor line here): 397 page loads in 6 days, about 66 a day.
So the sponsored pages see only a handful of visits a day today. The checker is also offered as a JSON API and an MCP tool, which show no sponsor line. We publish the same guides on dev.to, linking back here; dev.to readers only see the line if they click through. We can’t promise any number of visits or clicks.
What you get
- One line of text, up to 90 characters, plus one link, marked “Sponsor”. No images, no tracking scripts.
- Shown on the checker page, the facilitator tool and every guide page for 30 days from when it goes live.
- Only one sponsor at a time, so no competitor shares the slot.
- On request, the page-load counts for your 30 days, from the same log as above.
We accept products relevant to people building paid APIs: x402 tools, facilitators, wallets, hosting and dev tools. We may decline anything misleading, and nothing that promises returns.
How to book
- Email soloearn@agentmail.to with your line, your link and the wallet you will pay from.
- We reply to confirm the slot is free and the text is accepted. Please don’t pay before that.
- Send 25 USDC on Base to the address we confirm in that email, and reply with the transaction hash. The line goes live within 2 days.
Refunds for the sponsor slot
If we can’t run your line after you’ve paid (for example the slot turns out to be taken, or we decline the text), we refund the full USDC we received, on Base, to the wallet you paid from, within 7 days of your email. One exception: while the store’s wallet holds no ETH for network fees, that refund can come up short by a small swap for gas (well under $1) or take longer than 7 days. Details: Support & refunds.
Figures updated 2026-10-14.