S1API
🟠 Updated over a year agoPreview
🔍 Analysis
- 👍 1.1% endorsement rate — high engagement, a strong quality signal
- 🏆 #19 of 159 Utilities mods in this game by downloads
📋 About This Mod
A Schedule One Mono / Il2Cpp Cross Compatibility Layer
S1API is an open source collaboration project to help standardize Schedule One modding processes.
The goal is to provide a standard place for common functionalities so you can focus on making content versus reverse engineering the game.
Do I need this?
If you're using or plan to use any mods that depend on S1API, then yes.
How do I install this manually?
Download the latest version of S1API.
Place the Plugins folder in the ZIP file inside your Schedule One folder (typically `steamapps/common/Schedule I/`).
This plugin will determine if you're playing the main branch or alternate branch of Schedule One.
Nothing else will need to be done, you're good to go!
How do I use this to make mods?
Go check out the extremely helpful resources on our GitHub page.
I'm getting errors from S1API, what do I do?
Please head over to the GitHub page and create a new issue for us.
You can also post in the modding Discord under our thread 😀.
Drop us an endorsement ❤️
It's not easy being an API. Content is always king, not the backend glue!
Endorsements are free and really helps drive our motivation for this project.
S1API is an open-source collaboration project that standardizes Schedule One modding by providing a common API for shared functionalities, letting modders focus on content creation instead of reverse engineering. With 262 endorsements and 23,397 downloads, it's a community-backed utility for Schedule One mod developers.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Solid community backing with 262 endorsements and over 23k downloads.
- Solves a real pain point—no more reverse engineering for basic stuff.
- Open source means you can dig into the code and even contribute.
⚠️ Cons
- It's a utility mod, so it won't add flashy content—it's for modders, not players.
- Being a framework, it might break when the game updates, so keep an eye on it.
- If you're not making mods, you don't need this—it's purely a dev tool.
For Schedule One mod developers who want a standardized base to build on, saving time on common tasks. If you're a player just looking for gameplay mods, skip this—it's not for you. But if you're diving into modding, this is a solid foundation.
💡 Beginner Tips
- If you're new to Schedule One modding, check if other mods require S1API as a dependency—that's a sign you need it.
- Since it's a framework, make sure to place it in your mods folder and load it before other mods that depend on it.
- Join the Schedule One modding community to see how S1API is used in practice and get support.
📊 Mod Details
- Game
- Schedule1 Mods
- Author
- KaBooMa
- Version
- v1.2.1
- Downloads
- 23,397
- Endorsements
- 262
- Category
- Utilities
- Created
- 4/22/2025
- Updated
- 4/29/2025
🧩 Commonly Used Together
Users add these mods to the same collections — a real compatibility signal, not an AI guess.
🔧 How to Install Schedule I Mods
Download from Nexus Mods.
📖 Full step-by-step install guide for Schedule I →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Schedule I commands, item IDs, and more.
Keep browsing — more Schedule I mods await