Karidayori
Karidayori · Tidings Borne by Geese
Like geese returning with the season, words arrive from far horizons, and distant strangers slowly become names you wait for.
A worldwide penpal platform for text-only letters. Browse by country, discover thoughtful profiles, and write through a safety-first mailbox shaped around 13+ age-tier isolation, optional moderated photos, contact-info scanning, reports, and letters that naturally expire. Built as a Rust + Datastar + Maud web app, open to all countries but careful with every border between people.
Technology
The Vessel
Karidayori is a global letter-writing directory. It lets people browse by country, discover thoughtful profiles, and send text-only letters through a mailbox guarded by age tiers, moderation, and data minimization, an exchange shaped by care rather than speed.
Core Principles
- All countries welcome; no geo gates, no cultural bias
- Text-only letters; writing first, no attachments
- Optional photos; profiles can be anonymous or expressive
- Directory model; discover by country, scan, and choose
- Age-tier walls; minors and adults never cross the letter boundary
- Safety-first; reports, content scanning, and audit logs baked in
Operational Capabilities
| Capability | Engine |
|---|---|
| Global discovery | Country pages, profile filters, and age-tiered search |
| Timezone-aware presence | IANA timezone activity with reduced precision for minors |
| Safe correspondence | Server-side age policy + text-only letter composer |
| Guardian consent | Minor accounts activate only after a verified adult signs consent |
| Profile depth | Bios, hobbies, city-level location, optional moderated photos |
| Moderation flow | Contact-info scanner, reports, auto-suspension, audit log |
| Letter lifecycle | Inbox, archive, thread, report, and 12-month expiry |