PR

Premier Letters API

Mail: send handwritten letters and cards via USPS, with previews, pricing and tracking

22 operations14 schemas1 revision

Changes

Full history

Source

View schema
Spec
OpenAPI 3.1.0
Document
api-docs.premierletters.com · JSON, 24 KB
Retrieved
Oct 20, 2026, 09:52 UTC
Digest
72f072e21947

For agents

Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.

curl https://skmtc.dev/premierletters/apis/premier-letters-api.md
curl https://skmtc.dev/premierletters/apis/premier-letters-api/llms.txt