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<p align="center"> <img width="560" src="https://github.com/yetibot/yetibot/raw/master/img/yetibot_final.png?raw=true" /> </p> <p align="center"> <i>A chat bot written in Clojure, at your service.</i> </p>

Yetibot

<p align="center"> <a href="http://slack.yetibot.com"><img src="https://img.shields.io/badge/Yetibot%20Slack-%E2%9C%8C%EF%B8%8F-55C4D4.svg?style=for-the-badge" alt="Slack" data-canonical-src="https://img.shields.io/badge/Yetibot%20Slack-%E2%9C%8C%EF%B8%8F-55C4D4.svg?style=for-the-badge" style="max-width:100%;"></a> <a href="https://github.com/yetibot/yetibot/actions/workflows/test.yml"><img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/yetibot/yetibot/test.yml?style=for-the-badge"></a> <a href="https://clojars.org/yetibot"><img src="https://img.shields.io/clojars/v/yetibot.svg?style=for-the-badge" alt="Yetibot" data-canonical-src="https://img.shields.io/clojars/v/yetibot.svg?style=for-the-badge" style="max-width:100%;"></a> <a href="https://versions.deps.co/yetibot/yetibot"><img src="https://img.shields.io/badge/dynamic/json.svg?label=deps&url=https%3A%2F%2Fversions.deps.co%2Fyetibot%2Fyetibot%2Fstatus.json&query=%24.stats..[%22out-of-date%22]&suffix=%20out%20of%20date&style=for-the-badge&colorB=lightgrey" alt="Outdated dependencies"></a> <a href="https://hub.docker.com/r/yetibot/yetibot/"><img src="https://img.shields.io/badge/Docker-%F0%9F%90%B3-FDDE68.svg?style=for-the-badge" alt="Yetibot on Docker Hub" data-canonical-src="https://img.shields.io/badge/Docker-%F0%9F%90%B3-FDDE68.svg?style=for-the-badge" style="max-width:100%;"></a> <a href="https://codecov.io/gh/yetibot/yetibot"><img src="https://img.shields.io/codecov/c/github/yetibot/yetibot.svg?style=for-the-badge" alt="Codecov" data-canonical-src="https://img.shields.io/codecov/c/github/yetibot/yetibot.svg?style=for-the-badge" style="max-width:100%;"></a> </p>

You can think of Yetibot as a communal command line. It excels at:

Features that make Yetibot powerful and great, which is to say fun:

Take a look at the usage examples to see some fun useful things it can do.

<p>This project is supported by:</p> <p> <a href="https://www.digitalocean.com/"> <img src="https://opensource.nyc3.cdn.digitaloceanspaces.com/attribution/assets/SVG/DO_Logo_horizontal_blue.svg" width="201px"> </a> </p>

New contributors

Welcome new contributors!

Use it right now

Get an invite to the official Yetibot slack at slack.yetibot.com. There's Yetibot running on a Droplet generously provided by DigitalOcean that you can play with in Slack.

Getting started

To quickly try out Yetibot with minimal config:

Yetibot users

Already using Yetibot? Please add yourself to the list of Yetibot users!

Contributing

See CONTRIBUTING.

Road map

Yetibot has been undergoing continuous improvement since its inception. These are the immediate priorities, in addition to any bug fixes. Feedback and contributions are very welcome!

Installation

There are a few ways to run Yetibot:

  1. Follow the Docker instructions: the fastest way if you're already using Docker.

  2. yetibot-helm: the official Helm Chart for quickly running Yetibot on Kubernetes.

  3. Clone this repo: this gives you a standard Yetibot installation and provides a git-ignored place to store configuration. Run from the root dir with lein run.

  4. Make your own repo and depend on Yetibot: this gives you ultimate customizability, allowing you to depend on custom Yetibot plugins or define your own commands in-project, and gives you control over where you store your config (manual management, commit to private git repo, etc...)

    Yetibot

Configuration

See Configuration docs.

Usage

For more docs see the User Guide.

All commands are prefixed by !.

Pipes

Output from one command can be piped to another, like Unix pipes.

!complete does IE support | xargs echo %s? No, it is sucky.

does ie support html5? No, it is sucky.
does ie support css3? No, it is sucky.
does ie support svg? No, it is sucky.
does ie support media queries? No, it is sucky.
does ie support ftps? No, it is sucky.
does ie support png? No, it is sucky.
does ie support canvas? No, it is sucky.
does ie support @font-face? No, it is sucky.
does ie support webgl? No, it is sucky.
does ie support ttf? No, it is sucky.

Backticks

Backticks provide a lightweight syntax for sub-expressions, but they can't be nested.

!meme grumpy cat: `catfact` / False
<img src="http://cdn.memegenerator.net/instances/500x/33734863.jpg" />

Nested sub-expressions

For arbitrarily-nested sub-expressions, use $(expr) syntax, which disambiguates the open and closing of an expressions.

!meme philos: $(complete how does one $(users | random | letters | random) | random)
<img src="http://i.imgflip.com/z4d45.jpg" />

Combo

!echo `repeat 4 echo i don't always repeat myself but | unwords`…StackOverflowError | meme interesting:
<img src="http://i.imgflip.com/z4d6f.jpg" />

Aliases

You can build your own aliases at runtime. These are stored in the configured database, so upon restart they are restored.

!alias nogrid = repeat 3 echo `repeat 3 meme grumpy: no | join`

Pipes can be used, but the right-hand side must be quoted in order to treat it as a literal instead of being evaluated according to normal pipe behavior.

!alias i5 = "random | echo http://icons.wunderground.com/webcamramdisk/w/a/wadot/324/current.jpg?t=%s&.jpg"

You can specify placeholder arguments on the right-hand side using $s to indicate all arguments, or $n (where n is a 1-based index of which arg).

!alias temp = "weather $s | head 2 | tail"
!temp 98104
=> 33.6 F (0.9 C), Overcast

Adapter config

IRC: Yetibot can listen on any number of channels. You configure channels in config.edn. You can also invite Yetibot to a channel at runtime using the IRC /invite command:

/invite yetibot #whoa

When you invite Yetibot to a new channel, config.edn is overwritten, so next time you restart Yetibot, it will re-join the same channels.

You can also use the !room command to tell yetibot to join or leave a channel.

!help room
room join <room> # join <room>
room leave <room> # leave <room>
room list # list rooms that yetibot is in
room set <key> <value> # configure a setting for the current room
room settings # show all chat settings for this room
room settings <key> # show the value for a single setting

Slack: bots can't join a channel on their own, they must be invited, so room configuration doesn't apply. Instead, /invite @yetibot to any channel that you're in, and /kick @yetibot if you want it to leave. NB: you might need special privileges in order to kick.

Campfire is no longer supported. If you use Campfire, open an issue and we can add it back in!

Other chat platforms: If your chat platform of choice is not supported, open an issue. Adding adapters is quite easy.

Broadcast

If a room has broadcast set to true, Tweets will be posted to that room. By default all rooms have it set to false. To enable:

!room set broadcast true

Help

Yetibot self-documents itself using the docstrings of its various commands. Ask it for !help to get a list of help topics. !help all shows fully expanded command list for each topic.

!help | join ,
Use help <topic> for more details, !, <gen>that, alias, ascii, asciichart,
attack, buffer, catfact, chat, chuck, classnamer, clj, cls, complete, config,
count, curl, ebay, echo, eval, features, gh, giftv, grep, haiku, head, help,
history, horse, hs, http, image, info, jargon, jen, join, js, keys, list, log,
mail, meme, memethat, mustachefact, number, order, poke, poms, random, raw,
react, reload, repeat, rest, reverse, rhyme, scala, scalex, sed, set, sort, source,
split, ssh, status, tail, take, tee, twitter, update, uptime, urban, users,
vals, weather, wiki, wolfram, wordnik, words, xargs, xkcd, zen

Plugins

Yetibot has a plugin-based architecture. Its core which all plugins depend on is yetibot.core.

yetibot.core

Yetibot will load all commands and observers with namespaces on the classpath matching these regexes.

This lets you build any number of independent plugin projects and combine them via standard Leiningen dependencies.

How it works

Curious how the internals of Yetibot works? At a high level:

  1. commands are run through a parser built on InstaParse:
  2. an InstaParse transformer is configured to evaluate expressions through the interpreter, which handles things like nested sub-expressions and piped commands
  3. command namespaces are hooked into the interpreter's handle-cmd function using a cmd-hook macro and triggered via regex prefix matching

Getting help

If the docs or implementation code don't serve you well, please open a pull request and explain why so we can improve the docs. Also feel free to open an issue for feature requests!

Yetibot in the wild

License

Copyright © 2012-2019 Trevor Hartman. Distributed under the Eclipse Public License 1.0, the same as Clojure.

Logo designed by Freeform Design Co.