Aegis

About

Aegis is a secure, high-level networking layer for Roblox, designed to make client–server communication reliable, structured, and safe by default.

Aegis is a spiritual successor to Tether with a stronger focus on correctness, security, and developer ergonomics.

This package uses Serio for binary serialization, so to find more info on schemas, check it out!

[!CAUTION] Depends on rbxts-transformer-flamework!

[!WARNING] This package is a prototype. Nothing is battle-tested, nothing is benchmarked, nothing is final. Another thing to note, I don't know if this library is even practical or necessary at all.

Features

• Zero-boilerplate serialization
  Automatically encodes and decodes structured data into an efficient binary format.

• Built-in type safety
  Enforces runtime validation to ensure data integrity across the network boundary.

• Authenticated encryption
  Secures all traffic using modern AEAD primitives (ChaCha20-Poly1305), providing confidentiality and tamper protection.

• Replay protection
  Prevents duplicate or out-of-order packet abuse using nonce/sequence tracking.

• Seamless handshake protocol
  Handles connection setup, key exchange, and session initialization transparently.

Example

Shared

import { String, u8 } from "@rbxts/serio";

export const enum Message {
  Test
}

interface TestData {
  readonly message: String<u8>;
  readonly status: u8;
}

export interface MessageData {
  [Message.Test]: TestData;
}

Server

import { AegisServer as Aegis } from "@rbxts/aegis";

import { Message, type MessageData } from "shared/messaging"

const aegis = new Aegis<MessageData>;
aegis.on(Message.Test, (player, data) => {
  print("server received data", data, "from", player);
});

Client

import { AegisClient as Aegis } from "@rbxts/aegis";

import { Message, type MessageData } from "shared/messaging"

const aegis = new Aegis<MessageData>;
aegis.dispatch(Message.Test, { message: "hi, server!", status: 69 });