diff --git a/.llms-snapshots/llms-full.txt b/.llms-snapshots/llms-full.txt
index e8901fff..739f2dfe 100644
--- a/.llms-snapshots/llms-full.txt
+++ b/.llms-snapshots/llms-full.txt
@@ -11325,7 +11325,7 @@ API reference for writing serverless functions in Rust or TypeScript.
 
 [## 🗃️ TypeScript
 
-5 items](/docs/reference/functions/typescript.md)
+6 items](/docs/reference/functions/typescript.md)
 
 # Plugins
 
@@ -11729,7 +11729,7 @@ API reference for writing serverless functions in Rust or TypeScript.
 
 [## 🗃️ TypeScript
 
-5 items](/docs/reference/functions/typescript.md)
+6 items](/docs/reference/functions/typescript.md)
 
 # Rust
 
@@ -11755,6 +11755,10 @@ This page lists the crate versions for each Juno release, to help you upgrade yo
 
 API reference for writing serverless functions with TypeScript.
 
+[## 📄️ Schema Types
+
+Juno provides a type system built on top of Zod, extended with a few additional types you'll need when working with serverless functions.](/docs/reference/functions/typescript/schema.md)
+
 [## 📄️ SDK
 
 The SDK is provided by the @junobuild/functions library.](/docs/reference/functions/typescript/sdk.md)
@@ -12237,6 +12241,10 @@ pub fn encode_doc_data_to_string<T: Serialize>(    data: &T,) -> Result<String,
 
 API reference for writing serverless functions with TypeScript.
 
+[## 📄️ Schema Types
+
+Juno provides a type system built on top of Zod, extended with a few additional types you'll need when working with serverless functions.](/docs/reference/functions/typescript/schema.md)
+
 [## 📄️ SDK
 
 The SDK is provided by the @junobuild/functions library.](/docs/reference/functions/typescript/sdk.md)
@@ -12698,6 +12706,48 @@ Logging is fully supported. Objects are stringified and logs are routed to the I
 console.log("Hello from the Satellite");console.info("Hello", { type: "info", msg: "Something happened" });
 ```
 
+# Schema Types
+
+Juno provides a type system built on top of [Zod](https://zod.dev/), extended with a few additional types you'll need when working with serverless functions.
+
+All types are available through `j`.
+
+```
+import { j } from "@junobuild/schema";
+```
+
+---
+
+## Juno Types
+
+The following are specific types provided by Juno:
+
+### j.principal()
+
+Validates and represents an Internet Computer Principal.
+
+```
+j.principal();
+```
+
+### j.uint8array()
+
+Validates and represents a `Uint8Array`.
+
+```
+j.uint8array();
+```
+
+---
+
+## Zod Types
+
+All Zod types are available through `j`. Refer to the [Zod documentation](https://zod.dev/) for the full API reference.
+
+**Note:**
+
+`union` is not supported. Use `discriminatedUnion` instead.
+
 # SDK
 
 The following functions are provided to help you work with document and asset data inside your Satellite. They are part of the tools available when writing serverless functions in TypeScript and support common tasks such as interacting with the datastore, storage, and custom hook logic.
diff --git a/.llms-snapshots/llms.txt b/.llms-snapshots/llms.txt
index 1f9ac5fc..3b284586 100644
--- a/.llms-snapshots/llms.txt
+++ b/.llms-snapshots/llms.txt
@@ -218,6 +218,7 @@ Juno is your self-contained serverless platform for building full-stack web apps
 - [Canisters](https://juno.build/docs/reference/functions/typescript/canisters.md): The following functions can be used to interact with well-known Internet Computer canisters from your serverless functions.
 - [IC-CDK](https://juno.build/docs/reference/functions/typescript/ic-cdk.md): Juno exposes a growing set of these features for TypeScript, allowing you to build serverless functions that interact with the IC using a familiar developer experience.
 - [Node.js](https://juno.build/docs/reference/functions/typescript/node.md): The TypeScript runtime used in Juno does not provide full Node.js support. Polyfills are added iteratively to keep the environment stable and predictable.
+- [Schema Types](https://juno.build/docs/reference/functions/typescript/schema.md): Juno provides a type system built on top of Zod, extended with a few additional types you'll need when working with serverless functions.
 - [SDK](https://juno.build/docs/reference/functions/typescript/sdk.md): The SDK is provided by the @junobuild/functions library.
 - [Utils](https://juno.build/docs/reference/functions/typescript/utils.md): All utilities on this page are provided by the @junobuild/functions library.
 
diff --git a/docs/reference/functions/typescript/schema.md b/docs/reference/functions/typescript/schema.md
new file mode 100644
index 00000000..b3f65b89
--- /dev/null
+++ b/docs/reference/functions/typescript/schema.md
@@ -0,0 +1,43 @@
+# Schema Types
+
+Juno provides a type system built on top of [Zod](https://zod.dev/), extended with a few additional types you'll need when working with serverless functions.
+
+All types are available through `j`.
+
+```typescript
+import { j } from "@junobuild/schema";
+```
+
+---
+
+## Juno Types
+
+The following are specific types provided by Juno:
+
+### j.principal()
+
+Validates and represents an Internet Computer Principal.
+
+```typescript
+j.principal();
+```
+
+### j.uint8array()
+
+Validates and represents a `Uint8Array`.
+
+```typescript
+j.uint8array();
+```
+
+---
+
+## Zod Types
+
+All Zod types are available through `j`. Refer to the [Zod documentation](https://zod.dev/) for the full API reference.
+
+:::note
+
+`union` is not supported. Use `discriminatedUnion` instead.
+
+:::
diff --git a/sidebars.ts b/sidebars.ts
index f497cb77..6dfb4336 100644
--- a/sidebars.ts
+++ b/sidebars.ts
@@ -407,6 +407,7 @@ const sidebars: SidebarsConfig = {
               "API reference for writing serverless functions with TypeScript."
           },
           items: [
+            "reference/functions/typescript/schema",
             "reference/functions/typescript/sdk",
             "reference/functions/typescript/utils",
             "reference/functions/typescript/ic-cdk",