Letterin
Tailor a CV to a job posting: score the match, propose a reviewable rewrite, export PDF or Word.
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 | app.letterin/letterin |
| Endpoint used for verdict | https://letterin.app/api/mcp |
| Transports | streamable-http |
| Auth (Copilot Studio setting) | API key (header) |
| Last endpoint check | 2026-10-20T18:10:04Z · HTTP 401 |
| Website | https://letterin.app |
| Version | 1.0.0 |
| Registry updated | 2026-10-01 |
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Is this wrong or out of date? Email us. Data built 2026-10-20.