<p>The huge <ahref="/constructor/config">config</a> constructor contains lots of useful information, from chat and message size limitations, to privacy settings, online status refresh interval and timeout, VoIP configuration, default inline bot usernames for GIF, image and venue lookup, and lots of other global and user-specific information, check out the <ahref="/constructor/config">constructor page</a> for more information.</p>
While <ahref="/method/help.getConfig">help.getConfig</a> returns MTProto-specific configuration with information about server-side limitations and other MTProto-related information, <ahref="/method/help.getAppConfig">help.getAppConfig</a> returns configuration parameters useful for graphical Telegram clients.</p>
<p>When first invoking <ahref="/method/help.getAppConfig">help.getAppConfig</a>, pass <code>0</code> to hash; in future calls, use the <code>hash</code> contained in the previously returned <ahref="/constructor/help.appConfig">help.appConfig</a>; if the configuration hasn't changed, a <ahref="/constructor/help.appConfigNotModified">help.appConfigNotModified</a> will be returned instead of <ahref="/constructor/help.appConfig">help.appConfig</a>.</p>
<p>Example value of <ahref="/constructor/help.appConfig">help.appConfig</a>.<code>config</code>: </p>
<p><ahref="/api/animated-emojis">Animated emojis</a> and <ahref="/api/dice">animated dice</a> should be scaled by this factor before being shown to the user (float)</p>
<p>For <ahref="/api/dice">animated dice</a> emojis other than the basic <imgclass="emoji"src="//telegram.org/img/emoji/40/F09F8EB2.png"width="20"height="20"alt="🎲"/>, indicates the winning dice value and the final frame of the animated sticker, at which to show the fireworks <imgclass="emoji"src="//telegram.org/img/emoji/40/F09F8E86.png"width="20"height="20"alt="🎆"/> (object with emoji keys and object values, containing <code>value</code> and <code>frame_start</code> float values)</p>
<p>A map of soundbites to be played when the user clicks on the specified <ahref="/api/animated-emojis">animated emoji</a>; the <ahref="/api/file_reference">file reference field</a> should be base64-decoded before <ahref="/api/files">downloading the file</a> (map of <ahref="/api/files">file IDs</a> (<ahref="/constructor/inputDocument">inputDocument</a>.id), with emoji string keys)</p>
<p>Specifies that the app should not display <ahref="/api/stickers#sticker-suggestions">local sticker suggestions »</a> for emojis at all and just use the result of <ahref="/method/messages.getStickers">messages.getStickers</a> (bool)</p>
<p>Specifies the validity period of the local cache of <ahref="/method/messages.getStickers">messages.getStickers</a>, also relevant when generating the <ahref="/api/offsets#hash-generation">pagination hash</a> when invoking the method. (integer)</p>
<p>Whether the login screen should show a <ahref="/api/qr-login">QR code login option</a>, possibly as default login method (string, "disabled", "primary" or "secondary")</p>
<p>Whether clients should actively show a tooltip, inviting the user to configure <ahref="/api/folders">dialog filters AKA folders</a>; typically this happens when the chat list is long enough to start getting cluttered. (boolean)</p>
<p>Whether clients <em>can</em> invoke <ahref="/method/account.setGlobalPrivacySettings">account.setGlobalPrivacySettings</a> with <ahref="/constructor/globalPrivacySettings"><code>globalPrivacySettings.archive_and_mute_new_noncontact_peers = boolTrue</code></a>, to automatically archive and mute new incoming chats from non-contacts. (boolean)</p>
<p>Contains a list of suggestions that should be actively shown as a tooltip to the user. (Array of strings, possible values shown <ahref="#suggestions">in the suggestions section »</a>. </p>
<p>The ID of the official <ahref="/api/antispam">native antispam bot</a>, that will automatically delete spam messages if enabled as specified in the <ahref="/api/antispam">native antispam documentation »</a>.<br>
When fetching the admin list of a supergroup using <ahref="/method/channels.getParticipants">channels.getParticipants</a>, if native antispam functionality in the specified supergroup, the bot should be manually added to the admin list displayed to the user. (numeric string that represents a Telegram user/bot ID, should be casted to an int64)</p>
<p>Minimum number of participants required to hide the participants list of a supergroup using <ahref="/method/channels.toggleParticipantsHidden">channels.toggleParticipantsHidden</a>. (integer)</p>
<p>A list of domains that support automatic login with manual user confirmation, <ahref="/api/url-authorization#link-url-authorization">click here for more info on URL authorization »</a>. (array of strings)</p>
<p>A list of Telegram domains that support automatic login with no user confirmation, <ahref="/api/url-authorization#link-url-authorization">click here for more info on URL authorization »</a>. (array of strings)</p>
<p>A list of Telegram domains that can always be opened without additional user confirmation, when clicking on in-app links where the URL is not fully displayed (i.e. <ahref="/constructor/messageEntityTextUrl">messageEntityTextUrl</a> entities). (array of strings)</p>
<p>Note that when opening <ahref="/api/links#named-bot-web-app-links">named bot web app links</a> for the first time, confirmation should still be requested from the user, even if the domain of the containing deep link is whitelisted (i.e. <code>t.me/<bot_username>/<short_name>?startapp=<start_parameter></code>, where <code>t.me</code> is whitelisted). </p>
<p>Confirmation should <strong>always</strong> be asked, even if we already opened the <ahref="/api/links#named-bot-web-app-links">named bot web app</a> before, if the link is not visible (i.e. <ahref="/constructor/messageEntityTextUrl">messageEntityTextUrl</a> text links, inline buttons etc.). </p>
<p>Per-user read receipts, fetchable using <ahref="/method/messages.getMessageReadParticipants">messages.getMessageReadParticipants</a>, will be available in groups with an amount of participants less or equal to <code>chat_read_mark_size_threshold</code>. (integer)</p>
<p>To protect user privacy, read receipts are only stored for <code>chat_read_mark_expire_period</code> seconds after the message was sent. (integer)</p>
<p>Maximum number of unique reactions for any given message: for example, if there are 2000 <imgclass="emoji"src="//telegram.org/img/emoji/40/F09F918D.png"width="20"height="20"alt="👍"/> and 1000 custom emoji <imgclass="emoji"src="//telegram.org/img/emoji/40/F09F9881.png"width="20"height="20"alt="😁"/> reactions and reactions_uniq_max = 2, you can't add a <imgclass="emoji"src="//telegram.org/img/emoji/40/F09F918E.png"width="20"height="20"alt="👎"/> reaction, because that would raise the number of unique reactions to 3 > 2. (integer)</p>
<p>Maximum number of reactions that can be marked as allowed in a chat using <ahref="/constructor/chatReactionsSome">chatReactionsSome</a>. (integer)</p>
<p>Defines how many <ahref="/api/premium">Premium stickers</a> to show in the sticker suggestion popup when entering an emoji into the text field, see the <ahref="/api/stickers#sticker-suggestions">sticker docs for more info</a> (integer, defaults to 0)</p>
<p>For <ahref="/api/premium">Premium users</a>, used to define the suggested sticker list, see the <ahref="/api/stickers#sticker-suggestions">sticker docs for more info</a> (integer, defaults to 2)</p>
<p>The user can't purchase <ahref="/api/premium">Telegram Premium</a>. The app must also hide all Premium features, including stars for other users, et cetera. (boolean)</p>
<p>The maximum number of stickers a non-<ahref="/api/premium">Premium</a> user may <ahref="/api/stickers#favorite-stickersets">add to Favorites »</a> (integer)</p>
<p>The maximum number of stickers a <ahref="/api/premium">Premium</a> user may <ahref="/api/stickers#favorite-stickersets">add to Favorites »</a> (integer)</p>
<p>The maximum number of public <ahref="/api/channel">channels or supergroups</a> a non-<ahref="/api/premium">Premium</a> user may create (integer)</p>
<p>The maximum number of file parts uploadable by non-<ahref="/api/premium">Premium</a> users (integer, the maximum file size can be extrapolated by multiplying this value by <code>524288</code>, the biggest possible chunk size)</p>
<p>The maximum number of file parts uploadable by <ahref="/api/premium">Premium</a> users (integer, the maximum file size can be extrapolated by multiplying this value by <code>524288</code>, the biggest possible chunk size)</p>
<p>Array of string identifiers, indicating the order of <ahref="/api/premium">Telegram Premium</a> features in the Telegram Premium promotion popup, <ahref="/api/premium#telegram-premium-features">see here for the possible values »</a></p>
<p>Contains the username of the official <ahref="/api/premium">Telegram Premium</a> bot that may be used to buy a <ahref="/api/premium">Telegram Premium</a> subscription, see <ahref="/api/premium">here for detailed instructions »</a> (string)</p>
<p>Contains an <ahref="/api/payments">invoice slug</a> that may be used to buy a <ahref="/api/premium">Telegram Premium</a> subscription, see <ahref="/api/premium">here for detailed instructions »</a> (string)</p>
<p>Whether a gift icon should be shown in the attachment menu in private chats with users, offering the current user to gift a <ahref="/api/premium">Telegram Premium</a> subscription to the other user in the chat. (boolean)</p>
<p>Whether a gift icon should be shown in the text bar in private chats with users (ie like the <code>/</code> icon in chats with bots), offering the current user to gift a <ahref="/api/premium">Telegram Premium</a> subscription to the other user in the chat. Can only be true if <code>premium_gift_attach_menu_icon</code> is also true. (boolean)</p>
<p>Users that import a folder using a <ahref="/api/links#chat-folder-links">chat folder deep link »</a> should retrieve additions made to the folder by invoking <ahref="/method/chatlists.getChatlistUpdates">chatlists.getChatlistUpdates</a> at most every <code>chatlist_update_period</code> seconds. (integer)</p>
<p>Maximum number of per-folder <ahref="/api/links#chat-folder-links">chat folder deep links »</a> that can be created by non-<ahref="/api/premium">Premium</a> users. (integer)</p>
<p>Maximum number of per-folder <ahref="/api/links#chat-folder-links">chat folder deep links »</a> that can be created by <ahref="/api/premium">Premium</a> users. (integer)</p>
<p>A soft limit, specifying the maximum number of files that should be downloaded in parallel from the same DC, for files smaller than 20MB. (integer)</p>
<p>A soft limit, specifying the maximum number of files that should be downloaded in parallel from the same DC, for files bigger than 20MB. (integer)</p>
A full list of these parameters can be seen in the <ahref="#client-configuration">Client Configuration section »</a>, but we're mostly interested in the <code>pending_suggestions</code> and <code>autoarchive_setting_available</code> fields of the returned JSON object: </p>
<ul>
<li><code>autoarchive_setting_available</code> - Whether clients <em>can</em> invoke <ahref="/method/account.setGlobalPrivacySettings">account.setGlobalPrivacySettings</a> with <ahref="/constructor/globalPrivacySettings"><code>globalPrivacySettings.archive_and_mute_new_noncontact_peers = boolTrue</code></a>, to automatically archive and mute new incoming chats from non-contacts. (boolean)</li>
<li><code>pending_suggestions</code> - Contains a list of suggestions that should be actively shown as a tooltip to the user. Array of strings, possible values shown below:<ul>
<li><code>"AUTOARCHIVE_POPULAR"</code> - Users <em>should</em> invoke <ahref="/method/account.setGlobalPrivacySettings">account.setGlobalPrivacySettings</a> with <ahref="/constructor/globalPrivacySettings"><code>globalPrivacySettings.archive_and_mute_new_noncontact_peers = boolTrue</code></a>, to automatically archive and mute new incoming chats from non-contacts.</li>
<li><code>"VALIDATE_PASSWORD"</code> - Users should make sure they still remember their <ahref="/api/srp">2-step verification password</a>.</li>
<li><code>"VALIDATE_PHONE_NUMBER"</code> - Users should check whether their <ahref="/api/auth">authorization phone number</a> is correct and change the phone number if it is inaccessible.</li>
<li><code>"NEWCOMER_TICKS"</code> - Show the user a hint about the meaning of one and two ticks on sent messages.</li>
<p>Some <ahref="/api/channel">channel/supergroup</a>-related suggestions can also be contained in the <code>pending_suggestions</code> field of the <ahref="/constructor/channelFull">channelFull</a> constructor, returned by <ahref="/method/channels.getFullChannel">channels.getFullChannel</a>.<br>
Here's a list of possible suggestions: </p>
<ul>
<li><code>CONVERT_GIGAGROUP</code> - The <ahref="/api/channel">supergroup</a> has many participants: the admin should call <ahref="/method/channels.convertToGigagroup">channels.convertToGigagroup</a> to convert it to a gigagroup.</li>
<p><ahref="/method/help.dismissSuggestion">help.dismissSuggestion</a> can be used to dismiss a suggestion.<br>
Pass <ahref="/constructor/inputPeerEmpty">inputPeerEmpty</a> to <code>peer</code> for <ahref="#basic-suggestions">basic suggestions</a> and the <ahref="/api/channel">channel/supergroup</a>'s peer for <ahref="#channel-suggestions">channel suggestions</a>.</p>
<li><ahref="/method/help.getAppUpdate">help.getAppUpdate</a> - Get info about an application update, can contain the updated application binary in the attached document</li>
<li><ahref="/method/help.getAppChangelog">help.getAppChangelog</a> - Get a list of service messages with app-specific changelogs</li>
<li><ahref="/method/help.getInviteText">help.getInviteText</a> - Returns a localized invitation message that can be sent via SMS to contacts that haven't signed up to Telegram yet</li>
</ul>
<h3><aclass="anchor"href="#terms-of-service"id="terms-of-service"name="terms-of-service"><iclass="anchor-icon"></i></a>Terms of service</h3>
<p>These methods can be used for managing consent to Telegram's <ahref="https://telegram.org/tos">Terms Of Service</a>. </p>
<p>Typically, before a user <ahref="/api/auth#sign-insign-up">signs up</a> by invoking <ahref="/method/auth.signUp">auth.signUp</a>, apps should show a pop-up (if the <code>popup</code> flag of the <ahref="/constructor/help.termsOfService">help.termsOfService</a> method is set), asking the user to accept Telegram's terms of service; in case of denial, the user is to be returned to the initial page of the login flow. </p>
<p>When signing up for the first time, the <ahref="/constructor/help.termsOfService">help.termsOfService</a> is to be obtained from the <ahref="/constructor/auth.authorizationSignUpRequired">auth.authorizationSignUpRequired</a> constructor returned by the <ahref="/method/auth.signIn">auth.signIn</a>. </p>
<p>After signing up, or when logging in as an existing user, apps are supposed to call <ahref="/method/help.getTermsOfServiceUpdate">help.getTermsOfServiceUpdate</a> to check for any updates to the Terms of Service; this call should be repeated after <code>expires</code> seconds have elapsed.<br>
If an update to the Terms Of Service is available, clients are supposed to show a consent popup; if accepted, clients should call <ahref="/method/help.acceptTermsOfService">help.acceptTermsOfService</a>, providing the <ahref="/constructor/help.termsOfService">termsOfService <code>id</code> JSON object</a>; in case of denial, clients are to delete the account using <ahref="/method/account.deleteAccount">account.deleteAccount</a>, providing <code>Decline ToS update</code> as deletion <code>reason</code>. </p>
<h3><aclass="anchor"href="#telegram-support-info"id="telegram-support-info"name="telegram-support-info"><iclass="anchor-icon"></i></a>Telegram support info</h3>
<p>These methods can be used for fetching info about Telegram's support user, that users can use to get support and ask questions about the app. </p>
<ul>
<li><ahref="/method/help.getSupport">help.getSupport</a> - Will return the <ahref="/constructor/user">user</a> object that can be used for contacting support.</li>
<li><ahref="/method/help.getSupportName">help.getSupportName</a> - Will return a localized name for the support chat.</li>
</ul>
<h3><aclass="anchor"href="#country-information-and-login-phone-patterns"id="country-information-and-login-phone-patterns"name="country-information-and-login-phone-patterns"><iclass="anchor-icon"></i></a>Country information and login phone patterns</h3>
<p><ahref="/method/help.getCountriesList">help.getCountriesList</a> can be used to fetch a list of localized names for all available countries and phone code patterns for logging in. </p>
<p>The phone code pattern should be used when showing the <ahref="/api/auth">login</a> screen, or when changing phone number: for example, a pattern value of <code>XXX XXX XXX</code> with <code>country_code</code><code>+39</code> indicates that the phone field for login should accept a spaced pattern like <code>+39 123 456 789</code>.<br>
Also, the beginning of the national part of the phone number (<code>123 456 789</code>) should match one of the <code>prefixes</code>, if any were returned. </p>
<p>Additionally, the <code>fragment_prefixes</code><ahref="/api/config#client-configuration">client configuration parameter</a> contains a list of phone number prefixes for anonymous <ahref="https://fragment.com">Fragment</a> phone numbers.</p></div>
