Contact
Who You Are Writing To
x402 List is operated by Cosimo Miccolis, an individual based in Italy. The directory is run by one person, which is why there is one address and no support desk.
One Address
Everything reaches the same inbox: info@x402-list.com. Start here to choose the right channel.
Free by email to info@x402-list.com:
- Privacy requests and data rights.
- Security reports.
- Listing removal, without proof of ownership.
- Incorrect measured data, listing disputes, and directory errors.
- Recovery or refund of an existing payment; include the transaction hash if available.
- Sponsor bookings and quotes.
- Notification opt-outs and disputes; you can also reply to the notification email.
- Follow-up on an existing ticket; reply with Ticket #N for the same problem.
- Press inquiries and reuse agreements beyond the data license.
Reporting an error in the directory is always free. You do not need to buy a ticket or a suggestion to report incorrect data or recover a payment.
For individual help using the directory, the API, or understanding results, open a support ticket for $1.00 USDC on Base. One ticket covers one problem. A person replies by email within 5 business days. How to open a support ticket.
Paid suggestions are only for new features and feedback on the directory: $0.10 USDC on Base through POST /api/v1/suggestions. A reply is not guaranteed. Email info@x402-list.com to report incorrect data and directory errors for free. Suggestion API documentation.
Private messages on X and LinkedIn are not monitored. Use the channels on this page.
Getting a Listing Removed
Write from any address and name the service. Most listings were submitted through our form. A minority was added by us from public x402 indexes rather than submitted by the operator, and every one of those entries says so on its own page, with a removal link next to it. You do not need to prove ownership to ask for removal, and we do not ask why.
If instead you want to keep the listing and fix what it says, you can edit the descriptive
fields yourself from /services/<slug>/update. Measured data such as
uptime, pricing, and on-chain volume stays read-only for everyone, including us: correcting
it means correcting what we measure. Email info@x402-list.com with the listing URL and
what looks wrong; reporting it is free.
Privacy Requests
To ask for a copy of your data, correct it, delete it, or object to how it is used, write to the same address. We reply within one month, which is the deadline the law sets. What we hold, why, and for how long is set out in the privacy policy.
Security Reports
Same address, and it is also published in /.well-known/security.txt per RFC 9116. There is no bug bounty or promised response deadline. A person reads the reports. Report it anyway, and please give us a reasonable window before publishing.
Press and Data Reuse
The directory data is published under CC BY 4.0, so you can reuse it with attribution without asking us first: see the API docs for the machine-readable feeds and the exact attribution string. Write only if you need something the public endpoints do not already give you.