diff --git a/docs/updux.md b/docs/updux.md
index 4b8b0d1..d95ba2c 100644
--- a/docs/updux.md
+++ b/docs/updux.md
@@ -283,7 +283,9 @@ store.dispatch.addTodo(...);
 store.dispatch( actions.addTodo(...) );
 ``` 
 
-## asDux 
+## Methods
+
+### asDux 
 
   
 Returns a [ducks](https://github.com/erikras/ducks-modular-redux)-like
@@ -291,7 +293,7 @@ plain object holding the reducer from the Updux object and all
 its trimmings.
    
 
-## addMutation
+### addMutation
 
 Adds a mutation and its associated action to the updux.
 If a local mutation was already associated to the action,
@@ -303,3 +305,30 @@ conditionally run the subduxes mutations, check out [[subduxUpreducer]].
 ```js
 updux.addMutation( add, inc => state => state + inc );
 ```
+
+### addAction
+
+```js
+const action = updux.addAction( name, ...creatorArgs );
+const action = updux.addAction( otherActionCreator );
+```
+
+Adds an action to the updux. It can take an already defined action creator,
+or any arguments that can be passed to `actionCreator`.
+
+```js
+import {actionCreator, Updux} from 'updux';
+
+const updux = new Updux(); 
+
+const foo = updux.addAction('foo');
+const bar = updux.addAction( 'bar', (x) => ({stuff: x+1}) );
+
+const baz = actionCreator( 'baz' );
+
+foo({ a: 1});  // => { type: 'foo', payload: { a: 1 } }
+bar(2);        // => { type: 'bar', payload: { stuff: 3 } }
+baz();         // => { type: 'baz', payload: undefined }
+
+```
+
diff --git a/src/actions.test.ts b/src/actions.test.ts
index 1ce7077..7b90a95 100644
--- a/src/actions.test.ts
+++ b/src/actions.test.ts
@@ -1,38 +1,65 @@
-import Updux from ".";
-import u from "updeep";
+import Updux, {actionCreator} from '.';
+import u from 'updeep';
 
 const noopEffect = () => () => () => {};
 
-test.only("actions defined in effects and mutations, multi-level", () => {
-  const { actions } = new Updux({
+test('actions defined in effects and mutations, multi-level', () => {
+  const {actions} = new Updux({
     effects: {
-      foo: noopEffect
+      foo: noopEffect,
     },
-    mutations: { bar: () => () => null },
+    mutations: {bar: () => () => null},
     subduxes: {
       mysub: {
-        effects: { baz: noopEffect },
-        mutations: { quux: () => () => null },
+        effects: {baz: noopEffect},
+        mutations: {quux: () => () => null},
         actions: {
-          foo: (limit: number) => ({ limit })
-        }
+          foo: (limit: number) => ({limit}),
+        },
       },
       myothersub: {
         effects: {
-          foo: noopEffect
-        }
-      }
-    }
+          foo: noopEffect,
+        },
+      },
+    },
   });
 
   const types = Object.keys(actions);
   types.sort();
 
-  expect(types).toEqual(["bar", "baz", "foo", "quux"]);
+  expect(types).toEqual(['bar', 'baz', 'foo', 'quux']);
 
-  expect(actions.bar()).toEqual({ type: "bar" });
-  expect(actions.bar("xxx")).toEqual({ type: "bar", payload: "xxx" });
-  expect(actions.bar(undefined, "yyy")).toEqual({ type: "bar", meta: "yyy" });
+  expect(actions.bar()).toEqual({type: 'bar'});
+  expect(actions.bar('xxx')).toEqual({type: 'bar', payload: 'xxx'});
+  expect(actions.bar(undefined, 'yyy')).toEqual({type: 'bar', meta: 'yyy'});
 
-  expect(actions.foo(12)).toEqual({ type: "foo", payload: { limit: 12 } });
+  expect(actions.foo(12)).toEqual({type: 'foo', payload: {limit: 12}});
+});
+
+describe('different calls to addAction', () => {
+  const updux = new Updux();
+
+  test('string', () => {
+    updux.addAction('foo');
+    expect(updux.actions.foo('yo')).toMatchObject({
+      type: 'foo',
+      payload: 'yo',
+    });
+  });
+
+  test('actionCreator', () => {
+    const bar = actionCreator('bar', null);
+    updux.addAction(bar);
+    expect(updux.actions.bar()).toMatchObject({
+      type: 'bar',
+    });
+  });
+
+  test('actionCreator inlined', () => {
+    updux.addAction('baz', (x) => ({x}));
+    expect(updux.actions.baz(3)).toMatchObject({
+      type: 'baz', payload: { x: 3 }
+    });
+  });
 });
diff --git a/src/updux.ts b/src/updux.ts
index 4a44afa..2df48c3 100644
--- a/src/updux.ts
+++ b/src/updux.ts
@@ -21,7 +21,7 @@ import {
   EffectEntry
 } from "./types";
 
-import { Middleware, Store } from "redux";
+import { Middleware, Store, PreloadedState } from "redux";
 export { actionCreator } from "./buildActions";
 
 type StoreWithDispatchActions<
@@ -129,7 +129,7 @@ export class Updux<S = any> {
 
     return buildCreateStore<S>(
       this.reducer,
-      this.initial,
+      this.initial as PreloadedState<S>,
       this.middleware as any,
       actions
     ) as () => StoreWithDispatchActions<S, typeof actions>;
@@ -175,14 +175,17 @@ export class Updux<S = any> {
     this.localEffects.push([c.type, middleware, isGenerator]);
   }
 
-  addAction(action: string | ActionCreator<any>) {
+  addAction(action: string, transform?: any): ActionCreator<string,any>
+  addAction(action: ActionCreator<any>, transform?: never): ActionCreator<string,any>
+  addAction(action: any,transform:any) {
     if (typeof action === "string") {
       if (!this.localActions[action]) {
-        this.localActions[action] = actionFor(action);
+        this.localActions[action] = actionCreator(action,transform);
       }
-    } else {
-      this.localActions[action.type] = action;
+      return this.localActions[action];
     }
+
+    return this.localActions[action.type] = action;
   }
 
   get _middlewareEntries() {
diff --git a/tsconfig.json b/tsconfig.json
index b8a8c14..f45ba03 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -27,7 +27,7 @@
 
     /* Strict Type-Checking Options */
     "strict": true,                           /* Enable all strict type-checking options. */
-    "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    "noImplicitAny": false,                 /* 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. */
     // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */