ModsFinder

Captcha

by Mrbysco

Captcha puts a verification step in front of players, asking them to prove they are human before continuing with their session.

FabricForgeNeoForgeClient and serverMIT LicenseOpen source1.18.2 – 26.3

What it does

Before play can continue, the mod presents a Captcha challenge such as a checkbox prompt or a math question. Captchas of several types are used. Requests repeat on a default cooldown of 15 minutes, and the default setting requires the user to finish the challenge before carrying on. Fabric API and Forge Config API Port are required. Client and server, the environment for Captcha, means both the server and every player need it. The code is open source under the MIT License, and files are published for Fabric, Forge and NeoForge, with 21 release versions across 1.18.2 – 26.3.

Key features

  1. Checkbox challenge

    A checkbox prompt asks the player to confirm they are not a bot before continuing.

  2. Math questions

    Some challenges ask the player to solve a math question instead of clicking a box.

  3. Adjustable cooldown

    Requests come back after a 15 minute wait by default, and the interval can be changed in the config.

Compatibility

Latest build for each game version and loader.

26.x3 of 3 versions with builds
26.317.0.1Not available17.0.1
26.216.0.0Not available16.0.0
26.1.115.0.0Not available15.0.0
1.21.x7 of 7 versions with builds
1.21.1114.0.0Not available14.0.0
1.21.1013.0.0Not available13.0.0
1.21.812.0.0Not available12.0.0
1.21.511.0.0Not available11.0.0
1.21.410.0.0Not available10.0.0
1.21.19.0.1Not available9.0.1
1.219.0.0Not available9.0.0
1.20.x5 of 5 versions with builds
1.20.68.0.0Not available8.0.0
1.20.47.2.0Not available7.2.0
1.20.2Not availableNot available6.0.0
1.20.15.2.15.2.15.2.1
1.20Not available5.1.0Not available
1.19.x5 of 5 versions with builds
1.18.x1 of 1 version with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required
Forge Config API PortNeoForge's & Forge's config systems provided to other modding ecosystems. Designed for a multiloader architecture.
Required

Questions

Does Captcha need Fabric API?

Yes. Fabric API is a required dependency on Fabric, and Forge Config API Port is required as well.

Does the server need Captcha as well?

Yes. A server running it needs every connecting player to have it too.

In the catalog

Captcha is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 8,071 mods support Minecraft 26.3.

More from Mrbysco

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What the author says

If you've been around the internet you know all about Captcha's. This mod adds them to Minecraft! By default the mod will require the user to finish a Captcha to continue doing what they were doing. The default cooldown between Captcha requests is 15 minutes.
Mrbysco, on the Modrinth page

Official listing

Owner
Mrbysco
Published
2022-12-28
Updated on Modrinth
2026-09-30
Facts verified
2026-10-15

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