diff --git a/docs/docs/usage/automatic-response-formatting.md b/docs/docs/usage/automatic-response-formatting.md
new file mode 100644
index 0000000..32fd6c7
--- /dev/null
+++ b/docs/docs/usage/automatic-response-formatting.md
@@ -0,0 +1,39 @@
+# Automatic Response Formatting
+
+If you want to automatically format the response of an HTTP request,
+you can use simply add an `accept` header with the desired format.
+
+For example, if you want to receive the response in JSON format, you can add the `accept: application/json` header.
+
+```http title="automatic-response-formatting.http"
+POST https://httpbin.org/post HTTP/1.1
+content-type: application/json
+accept: application/json
+
+{
+  "uuid": "{{$uuid}}",
+  "timestamp": "{{$timestamp}}",
+  "date": "{{$date}}",
+  "randomInt": "{{$randomInt}}",
+}
+
+```
+
+**NOTE:** You need to have external tools to format the response.
+For example, `jq` for JSON, `xmllint` for XML and HTML, etc.
+
+### Supported Formats
+
+- JSON: `application/json`
+- XML: `application/xml`
+- HTML: `text/html`
+
+### Default formatters
+
+```lua title="default-formatters.lua"
+formatters = {
+  json = { "jq", "." },
+  xml = { "xmllint", "--format", "-" },
+  html = { "xmllint", "--format", "--html", "-" },
+}
+```
diff --git a/docs/docs/usage/magic-variables.md b/docs/docs/usage/magic-variables.md
new file mode 100644
index 0000000..0c0ea09
--- /dev/null
+++ b/docs/docs/usage/magic-variables.md
@@ -0,0 +1,28 @@
+# Magic Variables
+
+There is a predefined set of magic variables that you can use in your HTTP requests.
+
+They all start with a `$` sign.
+
+- `{{$uuid}}` - Generates a random UUID.
+- `{{$timestamp}}` - Generates a timestamp.
+- `{{$date}}` - Generates a date (YYYY-MM-DD).
+- `{{$randomInt}}` - Generates a random integer (between 0 and 9999999).
+
+To test this feature, create a file with the `.http` extension and write your HTTP requests in it.
+
+```http title="magic-variables.http"
+
+POST https://httpbin.org/post HTTP/1.1
+content-type: application/json
+accept: application/json
+
+{
+  "uuid": "{{$uuid}}",
+  "timestamp": "{{$timestamp}}",
+  "date": "{{$date}}",
+  "randomInt": "{{$randomInt}}",
+}
+
+###
+```
diff --git a/lua/kulala/parser/dynamic_vars.lua b/lua/kulala/parser/dynamic_vars.lua
index 5df1f02..73bb35c 100644
--- a/lua/kulala/parser/dynamic_vars.lua
+++ b/lua/kulala/parser/dynamic_vars.lua
@@ -1,7 +1,4 @@
-local FS = require("kulala.utils.fs")
-local GLOBALS = require("kulala.globals")
 local CONFIG = require("kulala.config")
-local STRING_UTILS = require("kulala.utils.string")
 local M = {}
 
 local random = math.random
@@ -18,14 +15,6 @@ local function uuid()
   end)
 end
 
-local previous_response_body = function()
-  local previous_response = FS.read_file(GLOBALS.BODY_FILE)
-  if not previous_response then
-    return ""
-  end
-  return STRING_UTILS.trim(previous_response)
-end
-
 ---Retrieve all dynamic variables from both rest.nvim and the ones declared by
 ---the user on his configuration
 ---@return { [string]: fun():string }[] An array-like table of tables which contains dynamic variables definition
@@ -37,9 +26,8 @@ function M.retrieve_all()
       return os.date("%Y-%m-%d")
     end,
     ["$timestamp"] = os.time,
-    ["$previousResponseBody"] = previous_response_body,
     ["$randomInt"] = function()
-      return math.random(0, 1000)
+      return math.random(0, 9999999)
     end,
   }