https://github.com/insanusmokrassar/ktgbotapi
Type-safe library for work with Telegram Bot API
https://github.com/insanusmokrassar/ktgbotapi
dev-inmo-tgbotapi hacktoberfest kotlin kotlin-js kotlin-jvm kotlin-library kotlin-multiplatform ktgbotapi telegram telegram-bot-api telegram-bots-api telegrambotapi tgbotapi
Last synced: 5 months ago
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Type-safe library for work with Telegram Bot API
- Host: GitHub
- URL: https://github.com/insanusmokrassar/ktgbotapi
- Owner: InsanusMokrassar
- License: apache-2.0
- Created: 2018-12-26T07:45:11.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2025-09-29T10:10:10.000Z (8 months ago)
- Last Synced: 2025-10-02T12:08:19.942Z (8 months ago)
- Topics: dev-inmo-tgbotapi, hacktoberfest, kotlin, kotlin-js, kotlin-jvm, kotlin-library, kotlin-multiplatform, ktgbotapi, telegram, telegram-bot-api, telegram-bots-api, telegrambotapi, tgbotapi
- Language: Kotlin
- Homepage: https://docs.inmo.dev/tgbotapi/index.html
- Size: 201 MB
- Stars: 411
- Watchers: 3
- Forks: 34
- Open Issues: 23
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# TelegramBotAPI [](https://central.sonatype.com/artifact/dev.inmo/tgbotapi) [](https://core.telegram.org/bots/api-changelog#august-15-2025)
| Docs | [](https://tgbotapi.inmo.dev/index.html) [](https://docs.inmo.dev/tgbotapi/index.html) |
|:----------------------:|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
| Useful repos | [](https://github.com/InsanusMokrassar/TelegramBotAPI-bot_template/generate) [](https://github.com/InsanusMokrassar/TelegramBotAPI-examples/) |
| Misc | [](https://github.com/KotlinBy/awesome-kotlin) [](https://docs.google.com/forms/d/e/1FAIpQLSctdJHT_aEniyYT0-IUAEfo1hsIlezX2owlkEAYX4KPl2V2_A/viewform?usp=sf_link) |
| Platforms |   |
| Experimental Platforms | [](https://kotlinlang.org/docs/native-target-support.html#tier-1) [](https://kotlinlang.org/docs/native-target-support.html#tier-1) |
Hello! This is a set of libraries for working with Telegram Bot API.
## Examples
There are several things you need to do to launch examples below:
* Add `mavenCentral()` to your project repositories
* [Maven variant](https://github.com/InsanusMokrassar/TelegramBotAPI/wiki/Including-in-your-project#pomxml)
* Add dependency `implementation "dev.inmo:tgbotapi:$tgbotapi_version"`
* Replace `tgbotapi_version` with exact version (see last one in the table above) or put variable with this name in project
* Alternative variant for maven [here](https://github.com/InsanusMokrassar/TelegramBotAPI/wiki/Including-in-your-project#telegrambotapi)
More including instructions [available here](https://github.com/InsanusMokrassar/TelegramBotAPI/wiki/Including-in-your-project).
Other configuration examples:
* [For multiplatform](https://github.com/InsanusMokrassar/TelegramBotAPI-examples/tree/master/ResenderBot)
* [For JVM](https://github.com/InsanusMokrassar/TelegramBotAPI-examples/blob/master/GetMeBot/build.gradle)
### Most common example
```kotlin
suspend fun main() {
val bot = telegramBot(TOKEN)
bot.buildBehaviourWithLongPolling {
println(getMe())
onCommand("start") {
reply(it, "Hi:)")
}
}.join()
}
```
In this example you will see information about this bot at the moment of starting and answer with `Hi:)` every time it
gets message `/start`
### Handling only last messages
```kotlin
suspend fun main() {
val bot = telegramBot(TOKEN)
val flowsUpdatesFilter = FlowsUpdatesFilter()
bot.buildBehaviour(flowUpdatesFilter = flowsUpdatesFilter) {
println(getMe())
onCommand("start") {
reply(it, "Hi:)")
}
retrieveAccumulatedUpdates(this).join()
}
}
```
The main difference with the previous example is that bot will get only last updates (accumulated before bot launch
and maybe some updates it got after launch)
### Build a little bit more complex behaviour
```kotlin
suspend fun main() {
val bot = telegramBot(TOKEN)
bot.buildBehaviourWithLongPolling {
println(getMe())
val nameReplyMarkup = ReplyKeyboardMarkup(
matrix {
row {
+SimpleKeyboardButton("nope")
}
}
)
onCommand("start") {
val photo = waitPhoto(
SendTextMessage(it.chat.id, "Send me your photo please")
).first()
val name = waitText(
SendTextMessage(
it.chat.id,
"Send me your name or choose \"nope\"",
replyMarkup = nameReplyMarkup
)
).first().text.takeIf { it != "nope" }
sendPhoto(
it.chat,
photo.mediaCollection,
entities = buildEntities {
if (name != null) regular(name) // may be collapsed up to name ?.let(::regular)
}
)
}
}.join()
}
```
### More examples
You may find examples in [this project](https://github.com/InsanusMokrassar/TelegramBotAPI-examples). Besides, you are
always welcome in our [docs](https://docs.inmo.dev/tgbotapi/index.html) and
[chat](https://t.me/InMoTelegramBotAPIChat).
### Bot API Server Notice
Under the hood, default bots realizations will try to use links
([PathedFile](tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/files/PathedFile.kt)#filePath) as files each
time you are trying to download file from telegram in any way - via saving to file, use stream or download as byte array.
To let bot correctly download files from bot api server, you must:
* Run bot api server locally
to proxy requests for files to the server where bot api server has been hosted
* In case of local bot api server (shared one host machine) you must ensure that access to bot api server has been
granted for your bot. For example, [aiogram/telegram-bot-api](https://hub.docker.com/r/aiogram/telegram-bot-api) image
use `101` UID/GID in linux for user and group as owners. So, your bot must run under user included in `101` group
(like `systemd-journal`) or be `101` UID user (like `systemd-resolve`)
* **OR** Use some reverse proxy (like nginx). It will allow you to broadcast your bots files without linux rights problems
* Set [TelegramAPIUrlsKeeper](tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/TelegramAPIUrlsKeeper.kt)#fileLinkUrlMapper
to map urls to let bot execute requests to your nginx proxy