MadelineProtoDocs/old_docs/API_docs_v66/methods/channels_readHistory.md

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---
title: channels.readHistory
description: Mark channel/supergroup history as read
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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---
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# Method: channels.readHistory
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[Back to methods index](index.md)
Mark channel/supergroup history as read
### Parameters:
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| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|channel|[Username, chat ID, Update, Message or InputChannel](../types/InputChannel.md) | The channel/supergroup | Optional|
|max\_id|[int](../types/int.md) | Maximum message ID to mark as read | Yes|
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### Return type: [Bool](../types/Bool.md)
### Can bots use this method: **NO**
### MadelineProto Example:
```
if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$Bool = $MadelineProto->channels->readHistory(['channel' => InputChannel, 'max_id' => int, ]);
```
### [PWRTelegram HTTP API](https://pwrtelegram.xyz) example (NOT FOR MadelineProto):
### As a user:
POST/GET to `https://api.pwrtelegram.xyz/userTOKEN/channels.readHistory`
Parameters:
channel - Json encoded InputChannel
max_id - Json encoded int
Or, if you're into Lua:
```
Bool = channels.readHistory({channel=InputChannel, max_id=int, })
```
### Errors this method can return:
| Error | Description |
|----------|---------------|
|CHANNEL_INVALID|The provided channel is invalid|
|CHANNEL_PRIVATE|You haven't joined this channel/supergroup|