diff --git a/app/sdk/jest.config.js b/app/sdk/jest.config.js
new file mode 100644
index 00000000..12057e23
--- /dev/null
+++ b/app/sdk/jest.config.js
@@ -0,0 +1,10 @@
+module.exports = {
+  roots: ['<rootDir>/src'],
+  testMatch: [
+    "**/__tests__/**/*.+(ts|tsx|js)",
+    "**/?(*.)+(spec|test).+(ts|tsx|js)"
+  ],
+  transform: {
+    "^.+\\.(ts|tsx)$": "ts-jest"
+  },
+}
diff --git a/app/sdk/package.json b/app/sdk/package.json
index 867336ab..0936dc03 100644
--- a/app/sdk/package.json
+++ b/app/sdk/package.json
@@ -1,18 +1,47 @@
 {
-  "name": "databag",
+  "name": "databag-client-sdk",
   "version": "0.0.1",
-  "description": "Client SDK for building applications on the Databag network.",
-  "main": "index.js",
-  "scripts": {
-    "test": "test"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/balzack/databag.git/app/sdk"
-  },
+  "description": "Client SDK for Databag Applications",
+  "author": "Roland Osborne <roland.osborne@gmail.com>",
+  "repository": "https://github.com/balzac/databag/app/sdk",
+  "license": "Apache-2.0",
   "keywords": [
-    "decentralized"
+    "typescript",
+    "databag"
   ],
-  "author": "Pierre Balzack",
-  "license": "Apache-2.0"
+  "main": "./dist/tsc/main.js",
+  "types": "./dist/tsc/main.d.ts",
+  "browser": "./dist/esbuild/browser.js",
+  "bin": {
+    "my-cli-tool": "./dist/esbuild/cli.js"
+  },
+  "scripts": {
+    "cli": "ts-node src/cli.ts",
+    "lint": "eslint src/ --ext .js,.jsx,.ts,.tsx",
+    "test": "jest",
+    "clean": "rm -rf dist build package",
+    "ts-node": "ts-node",
+    "docs": "typedoc --entryPoints src/main.ts",
+    "build": "tsc -p tsconfig.json",
+    "build-all": "yarn clean && yarn build && yarn esbuild-node && yarn esbuild-browser",
+    "esbuild-browser": "esbuild src/browser.ts --bundle --minify --sourcemap=external --outfile=dist/esbuild/browser.js",
+    "esbuild-browser:dev": "esbuild src/browser.ts --bundle --outfile=dist/esbuild/browser.js",
+    "esbuild-browser:watch": "esbuild src/browser.ts --bundle --watch --outfile=dist/esbuild/browser.js",
+    "esbuild-node": "esbuild src/cli.ts --bundle --platform=node --minify --sourcemap=external --outfile=dist/esbuild/cli.js",
+    "esbuild-node:dev": "esbuild src/cli.ts --bundle --platform=node --sourcemap=external --outfile=dist/esbuild/cli.js",
+    "esbuild-node:watch": "esbuild src/cli.ts --bundle --platform=node --watch --sourcemap=external --outfile=dist/esbuild/cli.js"
+  },
+  "devDependencies": {
+    "@types/jest": "^27.4.1",
+    "@types/node": "^17.0.26",
+    "@typescript-eslint/eslint-plugin": "^5.20.0",
+    "@typescript-eslint/parser": "^5.20.0",
+    "esbuild": "^0.14.38",
+    "eslint": "^8.14.0",
+    "jest": "27.0.0",
+    "ts-jest": "^27.1.4",
+    "ts-node": "^10.7.0",
+    "typedoc": "^0.22.15",
+    "typescript": "^4.6.3"
+  }
 }
diff --git a/app/sdk/src/browser.ts b/app/sdk/src/browser.ts
new file mode 100644
index 00000000..0e7cef11
--- /dev/null
+++ b/app/sdk/src/browser.ts
@@ -0,0 +1,10 @@
+/**
+ * This file is the entrypoint of browser builds.
+ * The code executes when loaded in a browser.
+ */
+import { foo } from './main'
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+(window as any).foo = foo  // instead of casting window to any, you can extend the Window interface: https://stackoverflow.com/a/43513740/5433572
+
+console.log('Method "foo" was added to the window object. You can try it yourself by just entering "await foo()"')
diff --git a/app/sdk/src/cli.ts b/app/sdk/src/cli.ts
new file mode 100644
index 00000000..543f46d7
--- /dev/null
+++ b/app/sdk/src/cli.ts
@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+import { foo } from './main'
+
+foo()
diff --git a/app/sdk/src/main.test.ts b/app/sdk/src/main.test.ts
new file mode 100644
index 00000000..a93eae26
--- /dev/null
+++ b/app/sdk/src/main.test.ts
@@ -0,0 +1,9 @@
+import { greet } from './main'
+
+test('the data is peanut butter', () => {
+  expect(1).toBe(1)
+});
+
+test('greeting', () => {
+  expect(greet('Foo')).toBe('Hello Foo')
+});
diff --git a/app/sdk/src/main.ts b/app/sdk/src/main.ts
new file mode 100644
index 00000000..5dff870e
--- /dev/null
+++ b/app/sdk/src/main.ts
@@ -0,0 +1,10 @@
+export const delayMillis = (delayMs: number): Promise<void> => new Promise(resolve => setTimeout(resolve, delayMs));
+
+export const greet = (name: string): string => `Hello ${name}`
+
+export const foo = async (): Promise<boolean> => {
+  console.log(greet('World'))
+  await delayMillis(1000)
+  console.log('done')
+  return true
+}
diff --git a/app/sdk/tsconfig.json b/app/sdk/tsconfig.json
new file mode 100644
index 00000000..9ebf6dcf
--- /dev/null
+++ b/app/sdk/tsconfig.json
@@ -0,0 +1,38 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "declaration": true,
+    "strict": true,
+    "noImplicitAny": true /* Raise error on expressions and declarations with an implied 'any' type. */,
+    "strictNullChecks": true /* Enable strict null checks. */,
+    "strictFunctionTypes": true /* Enable strict checking of function types. */,
+    "noUnusedLocals": true /* Report errors on unused locals. */,
+    "noUnusedParameters": true /* Report errors on unused parameters. */,
+    "noImplicitReturns": true /* Report error when not all code paths in function return a value. */,
+    "noFallthroughCasesInSwitch": true /* Report errors for fallthrough cases in switch statement. */,
+    "importHelpers": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "experimentalDecorators": true,
+    "sourceMap": true,
+    "outDir": "./dist/tsc/",
+    "types": [
+      "node",
+      "jest"
+    ],
+    "lib": [
+      "ES6",
+      "DOM"
+    ]
+  },
+  "include": [
+    "src/**/*.ts"
+  ],
+  "exclude": [
+    "node_modules",
+    "**/*.test.ts"
+  ]
+}