---
title: "Lettera (@lettera)"
description: "Lettera: API listing imported from its public OpenAPI spec."
account: "lettera"
---

# Lettera

Lettera: API listing imported from its public OpenAPI spec.

## APIs

1 public API with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/lettera/feed.md

- [Lettera Relay API](https://skmtc.dev/lettera/apis/lettera-relay-api.md): Messaging: send signed agent-to-agent messages, read inboxes, and manage Ed25519 agent identities and mail orgs