Agent Letter Desk
Mails paper letters that your AI writes with you: US Certified Mail and 30 European countries.
likely compatible
OAuth with discovery metadata and Dynamic Client Registration; use OAuth 2.0 → Dynamic discovery.
Rule R2c · what this means · Not tested in Copilot Studio.
| Registry name | com.agentletterdesk/letter-desk |
| Endpoint used for verdict | https://agentletterdesk.com/mcp |
| Transports | streamable-http |
| Auth (Copilot Studio setting) | OAuth 2.0 – Dynamic discovery |
| Last endpoint check | 2026-10-20T18:10:37Z · HTTP 401 |
| Website | https://agentletterdesk.com/ |
| Version | 0.5.0 |
| Registry updated | 2026-10-14 |
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Is this wrong or out of date? Email us. Data built 2026-10-20.