> ## Documentation Index
> Fetch the complete documentation index at: https://docs.polymorfa.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Messaging API

> Sessions, conversations, messages, and media using Polymorfa types.

```text Base URL theme={null}
https://api.polymorfa.com/messaging
```

Use `Authorization: Bearer <token>` to authenticate. Pin the contract date with
`Polymorfa-Version`; no version segment is needed in the URL.

[Connect a session](/guides/connect/api/get-qr-code),
[send a message](/guides/communicate/api/send-message), or browse the resources below
**Messaging API** in the sidebar.

Message requests use `conversation` to identify the conversation and `content`
to contain one message variant. Conversation identifiers accept an ID, an E.164
phone number, or both.