diff --git a/docs/examples.md b/docs/examples.md
index 55e0466..574a04b 100644
--- a/docs/examples.md
+++ b/docs/examples.md
@@ -32,7 +32,7 @@ const yaml = buildKitfile({
   model: {
     name: 'sentiment-classifier',
     path: './model/weights.pt',
-    format: 'pytorch',
+    framework: 'pytorch',
   },
   datasets: [
     { name: 'training-set', path: './data/train.csv', license: 'CC-BY-4.0' },
diff --git a/docs/types.md b/docs/types.md
index 6afd77a..b29c0f7 100644
--- a/docs/types.md
+++ b/docs/types.md
@@ -427,31 +427,49 @@ type Package = {
 
 ---
 
+### `LayerCommons`
+
+Base interface extended by all Kitfile layer types. Provides the common `path` and `description` fields.
+
+```typescript
+interface LayerCommons {
+  path: string;
+  description?: string;
+}
+```
+
+| Property | Type | Description |
+|---|---|---|
+| `path` | `string` | Path to the artifact file or directory. |
+| `description` | `string` | Human-readable description. |
+
+---
+
 ### `Model`
 
-Model artifact definition in a Kitfile.
+Model artifact definition in a Kitfile. Extends [`LayerCommons`](#layerbase).
 
 ```typescript
-interface Model {
+interface Model extends LayerCommons {
   name?: string;
-  path?: string;
-  parts?: ModelPart[];
+  framework?: string;
+  version?: string;
   license?: string;
-  description?: string;
-  format?: string;
-  parameters?: Record<string, string | number>;
+  parts?: ModelPart[];
+  parameters?: unknown;
 }
 ```
 
 | Property | Type | Description |
 |---|---|---|
+| `path` | `string` | Path to the model file or directory. *(from `LayerCommons`)* |
+| `description` | `string` | Human-readable description. *(from `LayerCommons`)* |
 | `name` | `string` | Display name for the model. |
-| `path` | `string` | Path to the model file or directory. |
-| `parts` | [`ModelPart[]`](#modelpart) | Sub-parts of a composite model (e.g. split weight files). |
+| `framework` | `string` | ML framework (e.g. `'pytorch'`, `'tensorflow'`). |
+| `version` | `string` | Model version. |
 | `license` | `string` | SPDX license identifier. |
-| `description` | `string` | Human-readable description. |
-| `format` | `string` | Model format (e.g. `'gguf'`, `'safetensors'`). |
-| `parameters` | `Record<string, string \| number>` | Arbitrary model parameters (e.g. context length, quantization). |
+| `parts` | [`ModelPart[]`](#modelpart) | Sub-parts of a composite model (e.g. split weight files). |
+| `parameters` | `unknown` | Arbitrary model parameters. |
 
 ---
 
@@ -461,67 +479,88 @@ A sub-part of a composite model.
 
 ```typescript
 interface ModelPart {
+  name?: string;
   path?: string;
   type?: string;
-  license?: string;
 }
 ```
 
+| Property | Type | Description |
+|---|---|---|
+| `name` | `string` | Display name for this part. |
+| `path` | `string` | Path to the part file. |
+| `type` | `string` | Part type identifier. |
+
 ---
 
 ### `Dataset`
 
-Dataset artifact definition in a Kitfile.
+Dataset artifact definition in a Kitfile. Extends [`LayerCommons`](#layerbase).
 
 ```typescript
-interface Dataset {
+interface Dataset extends LayerCommons {
   name?: string;
-  path?: string;
-  description?: string;
   license?: string;
   parameters?: unknown;
 }
 ```
 
+| Property | Type | Description |
+|---|---|---|
+| `path` | `string` | Path to the dataset file or directory. *(from `LayerCommons`)* |
+| `description` | `string` | Human-readable description. *(from `LayerCommons`)* |
+| `name` | `string` | Display name for the dataset. |
+| `license` | `string` | SPDX license identifier. |
+| `parameters` | `unknown` | Arbitrary dataset parameters. |
+
 ---
 
 ### `Code`
 
-Source code artifact definition in a Kitfile.
+Source code artifact definition in a Kitfile. Extends [`LayerCommons`](#layerbase).
 
 ```typescript
-interface Code {
-  path: string;
-  description: string;
+interface Code extends LayerCommons {
+  license?: string;
 }
 ```
 
+| Property | Type | Description |
+|---|---|---|
+| `path` | `string` | Path to the source code file or directory. *(from `LayerCommons`)* |
+| `description` | `string` | Human-readable description. *(from `LayerCommons`)* |
+| `license` | `string` | SPDX license identifier. |
+
 ---
 
 ### `Doc`
 
-Documentation artifact definition in a Kitfile.
+Documentation artifact definition in a Kitfile. Extends [`LayerCommons`](#layerbase).
 
 ```typescript
-interface Doc {
-  path: string;
-  description: string;
-}
+interface Doc extends LayerCommons {}
 ```
 
+| Property | Type | Description |
+|---|---|---|
+| `path` | `string` | Path to the documentation file or directory. *(from `LayerCommons`)* |
+| `description` | `string` | Human-readable description. *(from `LayerCommons`)* |
+
 ---
 
 ### `Prompt`
 
-Prompt artifact definition in a Kitfile.
+Prompt artifact definition in a Kitfile. Extends [`LayerCommons`](#layerbase).
 
 ```typescript
-interface Prompt {
-  path?: string;
-  description?: string;
-}
+interface Prompt extends LayerCommons {}
 ```
 
+| Property | Type | Description |
+|---|---|---|
+| `path` | `string` | Path to the prompt file or directory. *(from `LayerCommons`)* |
+| `description` | `string` | Human-readable description. *(from `LayerCommons`)* |
+
 ---
 
 ## Manifest Types
diff --git a/package.json b/package.json
index 8135b15..a5e9ae9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kitops/kitops-ts",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "TypeScript library for KitOps CLI",
   "type": "module",
   "main": "./dist/index.js",
diff --git a/src/index.ts b/src/index.ts
index 63b15d0..56f3872 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -62,6 +62,7 @@ export type {
 export type {
   Kitfile,
   Package,
+  LayerCommons,
   Model,
   ModelPart,
   Dataset,
diff --git a/src/types/kitfile.ts b/src/types/kitfile.ts
index 72ac8cc..692a578 100644
--- a/src/types/kitfile.ts
+++ b/src/types/kitfile.ts
@@ -1,5 +1,3 @@
-import { Layer } from "./kitops.js";
-
 export type Package = {
   name?: string,
   authors?: string[],
@@ -12,57 +10,55 @@ export type Package = {
  * OCI layer identity fields populated after a pack or inspect operation.
  * These are read-only from the registry; you don't set them when authoring a Kitfile.
  */
-interface LayerInfo {
+interface LayerIdentity {
   digest?: string;
   diffId?: string;
 }
 
+// Base interface for all layer types, which includes the common `path` and optional `description` fields.
+export interface LayerCommons {
+  path: string;
+  description?: string;
+}
+
 export interface ModelPart {
+  name?: string,
   path?: string,
-  type?: string,
-  license?: string;
+  type?: string
 }
 
-export interface Model {
+export interface Model extends LayerCommons {
   name?: string,
-  path?: string,
-  parts?: ModelPart[],
+  framework?: string;
+  version?: string;
   license?: string,
-  description?: string,
-  format?: string,
-  parameters?: Record<string, string | number>
+  parts?: ModelPart[],
+  parameters?: unknown;
 }
 
-export interface Dataset {
+export interface Dataset extends LayerCommons {
   name?: string,
-  path?: string,
-  description?: string;
   license?: string;
   parameters?: unknown;
 }
 
-export interface Code {
-  path: string,
-  description: string
+export interface Code extends LayerCommons {
+  license?: string;
 }
 
-export interface Doc {
-  path: string,
-  description: string
-}
+export interface Doc extends LayerCommons {}
 
-export interface Prompt {
-  path?: string;
-  description?: string;
-}
+export interface Prompt extends LayerCommons {}
 
 // Internal types for the kitfile definition, which include the OCI layer info fields
-interface KitfileModelPart extends ModelPart, LayerInfo { }
-interface KitfileModel extends Model, LayerInfo { }
-interface KitfileDataset extends Dataset, LayerInfo { }
-interface KitfileCode extends Code, LayerInfo { }
-interface KitfileDoc extends Doc, LayerInfo { }
-interface KitfilePrompt extends Prompt, LayerInfo { }
+interface KitfileModelPart extends ModelPart, LayerIdentity { }
+interface KitfileModel extends Model, LayerIdentity {
+  parts?: KitfileModelPart[];
+}
+interface KitfileDataset extends Dataset, LayerIdentity { }
+interface KitfileCode extends Code, LayerIdentity { }
+interface KitfileDoc extends Doc, LayerIdentity { }
+interface KitfilePrompt extends Prompt, LayerIdentity { }
 
 /**
  * Typed representation of a Kitfile.