diff --git a/README.md b/README.md
index bedf496..4557a22 100644
--- a/README.md
+++ b/README.md
@@ -67,78 +67,8 @@ echo tail([1, 2, 3]); // => [2, 3]
 
 API
 ---
-All functions is unitary, exception when the second argument is optional. It has constants to help you to work with point-free style.
 
-```
-all()
-allPass()
-always()
-any()
-anyPass()
-append()
-contains()
-compose()
-cond()
-divide()
-drop()
-equals()
-filter()
-find()
-flatten()
-gt()
-gte()
-has()
-head()
-id()
-ifElse()
-isEmpty()
-indexOf()
-init()
-join()
-last()
-lt()
-lte()
-map()
-memoize()
-merge()
-multiply()
-none()
-not()
-partial()
-pipe()
-prepend()
-prop()
-props()
-reduce()
-replace()
-slice()
-split()
-tail()
-take()
-toString()
-typeof()
-unless()
-when()
-```
-
-#### Constants from native functions
-
-```
-keys 
-values
-flip 
-sum
-isNull
-isInt
-isFloat
-isNumeric
-isString
-isBool
-isScalar
-isArray
-isObject
-isCallable
-```
+[**Full API Documentation**](docs/index.md)
 
 Thanks
 ------
diff --git a/docs/index.md b/docs/index.md
new file mode 100644
index 0000000..11c662f
--- /dev/null
+++ b/docs/index.md
@@ -0,0 +1,222 @@
+# API
+All functions is unitary, exception when the second argument is optional. It has constants to help you to work with point-free style.
+
++ [`all()`](#all)
++ [`allPass()`](#allpass)
++ [`always()`](#always)
++ [`any()`](#any)
++ [`anyPass()`](#anypass)
++ [`append()`](#append)
++ [`contains()`](#contains)
++ compose()
++ cond()
++ divide()
++ drop()
++ equals()
++ filter()
++ find()
++ flatten()
++ gt()
++ gte()
++ has()
++ head()
++ id()
++ ifElse()
++ isEmpty()
++ indexOf()
++ init()
++ join()
++ last()
++ lt()
++ lte()
++ map()
++ memoize()
++ merge()
++ multiply()
++ none()
++ not()
++ partial()
++ pipe()
++ prepend()
++ prop()
++ props()
++ reduce()
++ replace()
++ slice()
++ split()
++ tail()
++ take()
++ toString()
++ typeof()
++ unless()
++ when()
+
+#### Constants from native functions
+
++ keys 
++ values
++ flip 
++ sum
++ isNull
++ isInt
++ isFloat
++ isNumeric
++ isString
++ isBool
++ isScalar
++ isArray
++ isObject
++ isCallable
+
+-------
+
+### `all()`
+
+```php
+function all(callable $pred): \Closure;
+```
+
+`function => closure([array]) => boolean`
+
+```php
+use const Prelude\isScalar;
+use function Prelude\all;
+
+$even = function ($n) { 
+    return $n % 2 === 0; 
+};
+        
+all($even)([2, 4, 6, 8, 10, 12]); // true
+all(isScalar)([1, 2, 3, 4]); // true
+all(isScalar)([1, 2, [], 4]); // false
+```
+
+### `allPass()`
+
+ ```php
+ function allPass(array $preds): \Closure;
+ ```
+
+ function => closure => boolean
+
+ ```php
+use function Prelude\partial;
+use function Prelude\allPass;
+use function Prelude\get;
+use function Prelude\has;
+
+$placeholders = [
+    'to' => 'xxx@xxx.com',
+    'from' => 'xxx@xxx.com'
+];
+
+$propEq = partial(function ($k, $v, array $xss) {
+    return ($xss[$k] ?? false) === $v;
+});
+
+$y = allPass([has('from'), has('to')]);        
+$y($placeholders); // true
+
+$x = allPass([$propEq('rank', 'Q'), $propEq('suit', '♠︎')]);
+
+$x(['rank' => 'Q', 'suit' => '♠︎']); // true
+$x(['rank' => 'Q', 'suit' => '♣︎︎']); // false
+```
+
+### `always()`
+
+```php
+function always($x): \Closure
+{
+    return function () use ($x) {
+        return $x;
+    };
+}
+```
+
+### `any()`
+
+```php
+function any(callable $pred): \Closure;
+```
+
+`function => closure([array]) => boolean`
+
+```php
+use function Prelude\any;
+
+$isEven = function ($n) { return $n % 2 === 0; };
+$isOdd = function ($n) { return $n % 2 === 1; };
+
+any($isEven)([1, 3, 4, 5, 7]); // true
+any($isEven)([1, 3, 5, 7]); // false
+
+any($isOdd)([1, 3, 5, 7]); // true
+any($isOdd)([2, 4, 6]); // false
+
+any('is_array')([2, []]); // true
+any('is_array')(['s', 'x']); // false
+```
+
+### `anyPass()`
+
+```php
+function anyPass(array $preds): \Closure;
+```
+[array] => closure(callable) => boolean
+
+```php
+use function Prelude\anyPass;
+use function Prelude\partial;
+use function Prelude\equals;
+use function Prelude\has;
+
+$gt = partial(function ($a, $b) { return $a > $b; });
+$gte = anyPass([$gt(3), equals(3)]);
+
+$gte(2); // true
+$gte(3); // true
+$gte(4); // false
+
+$has = anyPass([has('user'), has('mobile')]);
+$has(['user' => '']); // true
+$has(['mobile' => '']); // true
+$has([]); // false
+
+```
+
+### `append()`
+
+```php
+function append($x): \Closure;
+```
+
+`any => closure([array]) => [array]`
+
+```php
+use function Prelude\append;
+
+append('tests')(['write', 'more']); // => ['write', 'more', 'tests'];
+
+$append = append(['tests']);
+$append(['write', 'more']); // => ['write', 'more', ['tests']];
+```
+
+### `contains()`
+
+```php
+function contains($x): \Closure;
+```
+
+`any => closure([array]) => bool`
+
+```php
+use function Prelude\Contains;
+
+$ls = ['name' => 'James'];
+contains('James')($ls); // true
+contains('Kirk')($ls); // false
+
+$nums = [10, 20, 30];
+contains(10)($nums); // true    
+```
\ No newline at end of file