PlayerEngine
ModLet custom mobs carry items, break blocks, and use them.
- Security
- Passed
- Privacy
- Sends data
- Runs on
- Varies by version
- Loaders
- Fabric, Forge, NeoForge
- Minecraft versions
- Up to 1.21.10
Why gradeB
How grades workStrengths
Points lost
- Many modpacks removed it−10 points
- Under 5 million downloads−1 point
All 11 criteria
Maintenance
Full points27 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.3 months ago (19 Jul 2026) 12 / 12Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.21.10 on NeoForge, 1.21.1 on Fabric and Forge. 65% of the 993 popular NeoForge mods updated in the last 6 months also have files for 1.21.1. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 9 of the last 24 months 6 / 6Stability
10 points lost12 / 22Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.6 of the 11 modpacks with two or more versions removed it in a later one (55%) See the 6 modpacks0 / 10Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.2 of its 27 releases in 2 years needed a quick fix (7%) 7 / 7Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · Goodbird-git/PlayerEngine 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · shakey2/PlayerEngine 3 / 3Popularity
1 point lost3 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.260,321 3 / 4Track record
Full points8 / 8AgeHow long the project has existed. It counts less when no new file came out recently.15 months, 70 releases 8 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 7 latest files for recent Minecraft versions. See Security
59.7 of the 71 points that apply = 84 out of 100. The points above are rounded to whole numbers.
Images
About
PlayerEngine is a server-side framework for developers who want custom Minecraft mobs to act as embodied AI agents, rather than simply chat as NPCs. It attaches player-like capabilities to a modder’s own living entities, including persistent inventories, world interaction, block breaking, item use, pathfinding, and task execution. With an AI brain such as the Player2 API providing goals, the framework supplies the action layer for agents to carry them out in the world, supporting tasks such as mining, gathering resources, managing tools, and interacting with objects. Its navigation is powered by Automatone, and its task system draws on ChatClef; complex building is not supported by the described framework features.
Written from Modrinth and CurseForge . How we write it
In-game changes
Changes the game's code in 6 areas, as a library other mods build on: Inventory and itemsChanges 3 game code files in this area: items, chests and other containers, crafting and enchanting., PlayerChanges 2 game code files in this area: your character: movement, abilities, hunger and controls., Mobs and their behaviorChanges 2 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Chunk loading and storageChanges 1 game code file in this area: how the game loads, tracks, saves and unloads chunks., Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses. and Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Details
- License
- MIT License
- Downloads
- 260K
- Created
- 7 Aug 2025
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Discord
Security
No harmful code found
We checked its files and read their code, without running it.
What it can do on your computer
- Starts other programs
- It can start another program on your computer. It can show a system notification.
- Records from your microphone
- It can record sound from a microphone. Voice chat mods do this. Only in its files for NeoForge 1.21.10.
- Connects to the internet
- It has code that can go online, for example to check for updates, load skins or send crash reports. Found in the mod's own code and in schematic4j, a library it includes. See Privacy
- Creates settings files
- The mod keeps its settings in the config folder of your game, where you can change or delete them. 1 file in your config folder.
- Sends the text you write to Player2
- The code calls an AI service over the internet, for example to write text or make images. You provide your own key.
- Uses folders outside the game
- It can read or write files outside your Minecraft folder, on the rest of your computer. Only in its files for Fabric 1.20.1 to 1.21.1; NeoForge 1.21.1; Forge 1.20.1.
Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.
How we checked
- FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.8 latest files: the newest file for each Minecraft version and loader. The answer above is about the 7 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
- Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.Read without running it
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
- Records from your microphoneRecords with the sound tools built into Java.
- Sends the text you write to Player2
api.player2.game - Uses folders outside the gameUses the system folder for application data.
- Looked for, not foundWe looked for these in the file and did not find them.Updating itself.
Privacy
Sends text to an AI service, your player name and data we could not identify
Sent to 127.0.0.1, api.player2.game and an address built while the game runs.
Only some of its files send your player name and data we could not identify.
We found this in its code, read without running it.
It can record from your microphone. See Security
Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.The code of all 7 files, for recent Minecraft versions. See each file in Releases
- 127.0.0.1Sends text to Player2 (AI service for games, desktop app or hosted) for a purpose not known.Unencrypted (http)Plain http: what is sent to this address is not encrypted on the way.Text to an AI service
- api.player2.gameSends your player name to OpenAI-compatible endpoint (address chosen by the user or the author) to generate replies of characters in the game. Sends text to Player2 (AI service for games, desktop app or hosted) for a purpose not known.Your player name
- Address built while the game runsThe code builds this address while the game runs: it is not written in the file.Sends text to an AI service for a purpose not known. Sends text to an AI service to turn text into speech or speech into text.Data we could not identify: the code sends something, but not a kind of data our checks can name
- Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.Nothing declared about crash reports, usage data or advertisements.
AI
AI was used to make it
The author writes that AI was used.
We looked for AI tools in its texts, files, images and code history and found none.
Can use AI in the game
Can send the text you write to Player2 (you provide your own key).
We found this in its code, read without running it.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content or AI features declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Possible signThe tool was seen around the project. This does not show that it was used to make the files you download.: Claude Code files listed in its ignore list
.claude/ - Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.The author writes: “ChatClef: The robust task and command system is adapted from the original ChatClef mod by Player2, which proved the potential of AI agents in Minecraft.”40 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Nothing found
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Nothing found
- Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.Can use AI in the game:958 code files read
- Can send the text you enter to Player2 (AI service for games, desktop app or hosted). The address is written in the code of the mod.
- Can talk to AI services that work like OpenAI's. You or the author choose which one.
- You provide your own API key.
Compatibility
See all 70 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need PlayerEngine to work.
Modpacks using this project
Find modpacks with itModpacks that include PlayerEngine in at least one of their versions, most downloaded first.
Player2 AI NPC Pack20K downloadslast version with it 19 Jul 2026
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greyskyshy278 downloadslast version with it 26 Apr 2026
VanillaCraft Renewd238 downloadslast version with it 25 Jan 2026
TerraFirma Redemption226 downloadslast version with it 24 May 2026
Lucky or Not191 downloadslast version with it 15 Aug 2026
Fatebound186 downloadslast version with it 9 Feb 2026Latest files
The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.
70 releases
Quick fixes
In the last 2 years, 2 releases needed a quick fix: a new release within 3 days to fix a problem. This counts in the grade, but it is too few to lose points.
See them, newest first
- playerengine-fabric-1.21.1-1.1.4.jar
- PlayerEngine-1.0.29.jarFixed a bug with player2 game id