Contact

For all inquiries please email **[email protected]**. To help us route quickly, prefix the subject line with the relevant category below.

Mailing address

RMBld. 701, Minami 2-jo Nishi 5-chome 31-1, Chuo-ku, Sapporo, Hokkaido 060-0062, Japan

（〒060-0062 北海道札幌市中央区南2条西五丁目31-1 RMBld. 701）

Content corrections — `[correction]`

For factual errors (wrong stars, outdated description, miscategorised project, broken link). Please include:

• The URL of the page
• A short description of what is wrong
• The correct value, with a link to a primary source if possible

We process verified corrections within 14 days, usually faster.

Removal / takedown — `[removal]`

If you are the maintainer of an indexed project and you want your entry removed:

• Email from a domain or address that demonstrates ownership of the project (e.g. an email listed on the project's GitHub profile or website)
• Include the page URL
• We will remove the entry within 14 days of verification

If you believe content infringes copyright, send a DMCA-style notice with all required elements (identification of the work, the infringing URL, your contact information, a good-faith statement, and a signature).

Data and licensing questions — `[data]`

For questions about data sources, AI model usage, refresh frequency, or content licensing.

Partnership and press — `[partnership]` / `[press]`

For collaboration, sponsorship, or media inquiries.

Bug reports — `[bug]`

For anything broken on the site itself (rendering issues, broken pagination, accessibility problems).

Response time

We aim to respond within 5 business days for routine inquiries and within 14 days for content corrections and removals.