Premier Letters
Send real pen-written letters, cards and postcards: quote, preview, order and track by mail.
likely compatible
Declares API key header (Authorization); use Copilot Studio 'API key' → Header.
Rule R2b · what this means · Not tested in Copilot Studio.
| Registry name | com.premierletters/mcp |
| Endpoint used for verdict | https://www.premierletters.com/api/mcp |
| Transports | streamable-http |
| Auth (Copilot Studio setting) | API key (header) |
| Last endpoint check | 2026-10-20T18:12:16Z · initialize OK |
| Website | https://www.premierletters.com/developers |
| Version | 1.0.0 |
| Registry updated | 2026-09-21 |
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Is this wrong or out of date? Email us. Data built 2026-10-20.