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Open Protection and choose a filter. Each filter saves its own scope, thresholds and response.

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Set up a filter

1

Choose its scope

Select the channels and members to check, then review exemptions. Protection responses explains how the selections combine.
2

Start with Monitor

Set the thresholds below and choose Monitor. Review its matches before enabling an automatic response.
3

Choose a response

Select Take action, choose the message and member actions, then save.
4

Review a match

Open the recent matches or All matching incidents. The incident shows which steps completed and any failures. Correct the reported cause before retrying a failed step.
A Juniper Club spam-filter incident showing completed message deletion, warning and timeout.
A Juniper Club spam-filter incident showing completed message deletion, warning and timeout.

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Message spam

Set a threshold and rolling time window for Message burst, Duplicate messages, Link rate, Repeated content and Sustained rate. Choose whether counts follow a member in one channel or across the server. Link rate counts how often links are posted. Use Phrases and links to block particular hosts.

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Invite spam

Set Invite burst, Repeated invite and Invite destination rate thresholds and windows. Add allowed invite codes to Approved invite destinations. pup recognizes discord.gg/code, discord.com/invite/code and discordapp.com/invite/code, including invites split up with spaces.

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Excessive uppercase

Set Uppercase threshold, Minimum letters and Minimum message length. Short messages below either minimum are skipped. The filter counts letters with an uppercase or lowercase form; languages without letter case are unaffected.

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Repetition and Zalgo

Set Maximum repeated content, Maximum combining marks and Minimum message length. Combining marks are accents and other marks attached to a character; repeated marks can make text difficult to read. Choose Ignore code blocks where members share code. Use Exempt language codes for writing that needs a different treatment, such as ja for Japanese.

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Emoji and sticker spam

Set Custom emoji limit, Unicode emoji limit, Sticker limit, Reaction count limit, Reaction rate and Reaction window separately. Reaction matches go to review and do not delete the message being reacted to. Use channel, role or member exemptions where the server’s usual expression needs a different limit. The accessibility-pattern setting does not identify a member’s accessibility needs.

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Wall text

Select Protected channels first. Each selected channel gets Characters, Lines and Fragments limits. Leave a support channel out of that list to exempt it. Set Message count and Time window for messages split into fragments, and choose whether to Ignore code blocks. An empty protected-channel list checks no channels, including when the general scope says all channels.

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Files

Attachment spam counts files attached by one member. Set Attachment threshold and Time window. A match occurs when the count reaches the threshold. Dangerous files checks risky extensions, media types and deceptive filenames. To restrict attachments further, add Allowed file extensions, without a dot:
The list accepts up to 100 unique extensions of 1–16 letters or numbers. A populated list blocks other extensions and files without a recognized extension. Leave it empty to use the dangerous-file checks alone. Executable files and deceptive names remain blocked even when their extension is allowed. Monitor records matches without deleting messages.

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Mentions

Mention spam counts member, role, @everyone and @here mentions by one member. Set Mention threshold and Time window. Exempt members and channels are skipped. For supported scopes, mention spam can use Discord AutoMod.

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Other protections

Use Phrases and links for content and domain rules, or Phishing links for malicious destinations. Server emergencies have their own guides: Raid mode, Server lockdown and Anti-nuke. Join admission handles new arrivals. Data and privacy explains what protection matches retain.