IRCv3
echoIRCd implements a broad set of IRCv3 capabilities. A
client negotiates them with CAP LS / CAP REQ; cap-notify keeps the client
informed as they change. This page groups what's supported.
Message tags & framing
| Capability |
What it adds |
message-tags (+ msgid) |
Arbitrary message tags, and a unique msgid on messages. |
server-time |
A time tag with the server's timestamp on each message. |
account-tag |
The sender's logged-in account as a tag. |
echo-message |
The server echoes your own PRIVMSG/NOTICE back to you. |
labeled-response |
Correlate a response batch to the command that caused it. |
batch |
Group related messages (history playback, netjoins, …). |
standard-replies |
Structured FAIL / WARN / NOTE replies. |
TAGMSG |
A tag-only message (e.g. typing / reactions) with no text body. |
Membership & identity
| Capability |
What it adds |
extended-join |
Account and real name included in JOIN. |
account-notify |
Notified when a user logs in / out of an account. |
away-notify |
Notified when a user's away state changes. |
chghost |
Notified when a user's host/ident changes (instead of a rejoin). |
setname |
Change your real name in-session (SETNAME). |
multi-prefix |
See all of a member's status prefixes at once. |
userhost-in-names |
Full nick!user@host in NAMES. |
invite-notify |
Channel ops see invites to their channel. |
draft/pre-away |
Send AWAY during registration so away state is set before the first JOIN. |
no-implicit-names |
Suppress the automatic NAMES reply on JOIN (the client asks when it wants it). |
draft/channel-rename |
RENAME a channel in place, keeping membership. |
Authentication
| Capability |
What it adds |
sasl |
AUTHENTICATE with PLAIN or EXTERNAL (client-cert / CertFP), relayed to the services server. See linking. |
draft/account-registration |
Create and confirm an account in-band with REGISTER / VERIFY. |
History & messaging
| Capability |
What it adds |
draft/chathistory |
CHATHISTORY — fetch recent messages for a conversation. |
draft/message-redaction |
REDACT — delete/redact a prior message. |
draft/multiline |
Send one logical message spanning multiple lines. |
draft/read-marker |
MARKREAD — set/query the last-read point of a conversation. |
draft/relaymsg |
RELAYMSG — speak under a spoofed relay nick (for bridges). |
Monitoring & notifications
MONITOR (+ extended-monitor), the legacy WATCH list, SILENCE, and
caller-id (ACCEPT + user mode +g) let clients track other users' presence and
control who may message them.
Metadata & misc
| Capability / feature |
What it adds |
draft/metadata-2 |
METADATA key/value data on users and channels. |
draft/extended-isupport |
Re-request the current ISUPPORT tokens on demand. |
draft/json-log |
Stream the server log to an oper as JSON. |
sts |
Strict Transport Security — tell a client to upgrade to TLS and pin that for a duration (opt-in via sts_duration / sts_port / sts_preload). |
EXTJWT |
A short-lived, server-signed HS256 token a client can present elsewhere. |
| network icon / profile link |
Advertise a network icon and per-account profile URLs. |
ISUPPORT
On registration the server advertises its limits and features via RPL_ISUPPORT
(005), including PREFIX, CHANMODES, EXTBAN (see modes), WHOX,
CHATHISTORY, MONITOR / WATCH / SILENCE sizes, NICKLEN / CHANNELLEN,
CASEMAPPING=ascii, UTF8ONLY, and NETWORK.
