More up-to-date IRC Definition Lists
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IRC Defs

These are IRC definition lists. Things like lists of IRC numerics, channel modes, user modes, and other things that are implemented in various bits of IRC software.

Base data was taken from, converted to YAML via the tools in the _legacy_data folder, and adapted for use with the Jekyll static site generator (used by Github Pages).

Pull requests to correct or update these lists are welcomed.

Online Site

Available Pages


The following license information is from the website:

You may be interested in using the definition files in your own project;
There are no license restrictions, other than to retain the copyright information.

Copyright information is listed in the specific converted spec files in the _data folder (as in the original .def files downloaded from

Discovering Numerics

I've written a script called discover_numerics that helps me search for numerics that aren't currently listed in our list. It's helpful to use this to search new releases of Hybrid, Insp, Chary, Unreal, etc.

It requires the pyyaml and docopt modules and uses Python3. To install the required modules, install Python3, then run:

pip3 install pyyaml docopt

Usage Examples

Searching a typical numeric.h file

Searching a single numeric.h file, such as in IRCD-Hybrid, Charybdis, Unreal, etc:

./discover_numerics search /path/to/ircd/include/numerics.h

Searching InspIRCd

Because Insp scatters its numeric definitions all over its source directory, you can't just search a single file. Because of this, you need to search multiple files in the directory like this:

find /path/to/inspircd/ -type f | xargs ./discover_numerics search

This also does not find every numeric, thanks to how InspIRCd likes to use numerics directly rather than #define-ing them.

Numerics will output as lines like this, which makes it simple to grep through the source directory to discover the format and usage of these numerics:

Could not find numeric: RPL_STATSCLONE (225)
Could not find numeric: RPL_USINGSSL (275)
Could not find numeric: RPL_EXEMPTLIST (348)
Could not find numeric: RPL_ENDOFEXEMPTLIST (349)
Could not find numeric: RPL_RWHOREPLY (354)
Could not find numeric: ERR_TARGETTOFAST (439)
Could not find numeric: ERR_NOSSL (488)
Could not find numeric: ERR_NOSHAREDCHAN (493)
Could not find numeric: ERR_LAST_ERR_MSG (504)