# Need explanation of invite URI parameters **URL:** \ **Category:** Mutual Help\ **Tags:** solved, documentation, security\ **Created:** [August 31, 2026, 3:48pm UTC](https://forum.delta.chat/t/need-explanation-of-invite-uri-parameters/5727 "2026-08-31T15:48:11Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![ian](https://forum.delta.chat/user_avatar/forum.delta.chat/ian/32/3164_2.png) [@ian](https://forum.delta.chat/u/ian)\ **Post date:** [August 31, 2026, 4:13pm UTC](https://forum.delta.chat/t/need-explanation-of-invite-uri-parameters/5727/2 "2026-08-31T16:13:20Z")
> > **[Alice\_FP - 2. Securing communications against network adversaries — SecureJoin...](https://securejoin.delta.chat/en/latest/new.html#setup-contact-protocol)** > > To withstand network adversaries, peers must verify each other’s keys to establish guaranteed e2e-encrypted communication. In this section we describe protocols to securely setup a contact and to securely add a user to a group. - [interface/uri-schemes.md at main · deltachat/interface · GitHub](https://github.com/deltachat/interface/blob/main/uri-schemes.md#user-content-invite-links-httpsideltachat-) - right after the hashmark: hexadecimal public key fingerprint of user who invited you, same as used in `openpgp4fpr:` URI - `n`: name of user who invited you - `i`, `j`: invitenumber - `s`: authcode - `x`: group ID and broadcast channel ID - `g`: type is group, its name - `b`: type is broadcast channel, its name - `z`: type is [ArcaneChat](https://github.com/ArcaneChat/core/pull/438) moderated [group](https://github.com/ArcaneChat/core/blob/main/src/qr.rs#L516), its name - its type is a direct chat invite if `x`, `g`, `b` and `z` are missing When you reset an invite link, it invalidates the previous value and creates a new pair of `i` and `s`. --- _[View the full topic](https://forum.delta.chat/t/need-explanation-of-invite-uri-parameters/5727)._