diff --git a/lua/spacevim/api/prompt.lua b/lua/spacevim/api/prompt.lua
new file mode 100644
index 000000000..2fbb4e060
--- /dev/null
+++ b/lua/spacevim/api/prompt.lua
@@ -0,0 +1,122 @@
+--=============================================================================
+-- prompt.lua --- prompt api for spacevim
+-- Copyright (c) 2016-2019 Wang Shidong & Contributors
+-- Author: Wang Shidong < wsdjeg@outlook.com >
+-- URL: https://spacevim.org
+-- License: GPLv3
+--=============================================================================
+
+local Key = require('spacevim.api').import('vim.keys')
+
+local M = {}
+
+M.__cmp = require('spacevim.api').import('vim.compatible')
+M.__vim = require('spacevim.api').import('vim')
+
+
+M._keys = {
+    close = "<Esc>"
+}
+
+M._prompt = {
+    mpt = '==>',
+    cursor_begin = '',
+    cursor_char = '',
+    cursor_end = '',
+}
+
+M._function_key = {}
+
+M._quit = true
+
+M._handle_fly = ''
+
+M._onclose = ''
+
+M._oninputpro = ''
+
+function M.open()
+    M._quit = false
+    M._build_prompt()
+    if M.__cmp.fn.empty(M._prompt.cursor_begin) == 0 then
+        M._handle_input(M._prompt.cursor_begin)
+    else
+        M._handle_input()
+    end
+end
+
+function M._c_r_mode_off(timer)
+    M._c_r_mode = false
+end
+
+function M._handle_input(...)
+    local argv = {...}
+    local begin = argv[1] or ''
+    if begin == '' then
+        if type(M._oninputpro) == 'function' then
+            M._oninputpro()
+        end
+        if type(M._handle_fly) == 'function' then
+            M._handle_fly(M._prompt.cursor_begin
+            .. M._prompt.cursor_char
+            .. M._prompt.cursor_end)
+        end
+        M._build_prompt()
+    end
+    M._c_r_mode = false
+    while not M._quit do
+        local char = M.__vim.getchar()
+        if M._function_key[char] ~= nil then
+            pcall(M._function_key[char])
+            goto continue
+        end
+        if M._c_r_mode == 1 then
+        elseif char == Key.t('<c-r>') then
+        elseif char == Key.t('<right>') then
+            M._prompt.cursor_begin = M._prompt.cursor_begin .. M._prompt.cursor_char
+            M._prompt.cursor_char = M.__cmp.fn.matchstr(M._prompt.cursor_begin, '^.')
+            M._prompt.cursor_end = M.__cmp.fn.substitute(M._prompt.cursor_end, '^.', '', 'g')
+            M._build_prompt()
+            goto continue
+        elseif char == "\<Left>" then
+        elseif char == "\<C-w>" then
+        elseif char == "\<C-a>"  or char == "\<Home>" then
+        elseif char == "\<C-e>"  or char == "\<End>" then
+        elseif char == "\<C-u>" then
+        elseif char == "\<C-k>" then
+        elseif char == "\<bs>" then
+        elseif (type(self._keys.close) == 1 add char == self._keys.close)
+            or (type(self._keys.close) == 3 add index(self._keys.close, char) > -1 ) then
+        elseif char == "\<FocusLost>" or char ==# "\<FocusGained>" or char2nr(char) == 128 then
+        else
+        end
+        if type(self._oninputpro) ==# 2
+            call call(self._oninputpro, [])
+            endif
+            if type(self._handle_fly) ==# 2
+                call call(self._handle_fly, [self._prompt.begin . self._prompt.cursor . self._prompt.end])
+                endif
+                ::continue::
+            end
+        end
+
+
+        function M._build_prompt()
+            local ident = M.__cmp.fn['repeat'](' ', M.__cmp.win_screenpos(0)[2] - 1)
+        end
+
+        function M._clear_prompt()
+            M._prompt = {
+                mpt = M._prompt.mpt,
+                cursor_begin = '',
+                cursor_char = '',
+                cursor_end = ''
+            }
+        end
+
+        function M.close()
+
+        end
+
+
+        return M
diff --git a/lua/spacevim/api/vim.lua b/lua/spacevim/api/vim.lua
new file mode 100644
index 000000000..041a50683
--- /dev/null
+++ b/lua/spacevim/api/vim.lua
@@ -0,0 +1,20 @@
+local M = {}
+
+
+function M.getchar(...)
+    local status, ret = pcall(vim.fn.getchar, ...)
+    if not status then
+        ret = 3
+    end
+    if type(ret) == 'number' then return vim.fn.nr2char(ret) else return ret end
+end
+
+function M.getchar2nr(...)
+    local status, ret = pcall(vim.fn.getchar, ...)
+    if not status then
+        ret = 3
+    end
+    if type(ret) == 'number' then return ret else return vim.fn.char2nr(ret) end
+end
+
+return M
diff --git a/lua/spacevim/api/vim/keys.lua b/lua/spacevim/api/vim/keys.lua
new file mode 100644
index 000000000..91b3d2774
--- /dev/null
+++ b/lua/spacevim/api/vim/keys.lua
@@ -0,0 +1,18 @@
+--!/usr/bin/lua
+local M = {}
+
+
+function M.t(str)
+    if vim.api ~= nil and vim.api.nvim_replace_termcodes ~= nil then
+        -- https://github.com/neovim/neovim/issues/17369
+        local ret = vim.api.nvim_replace_termcodes(str, false, true, true):gsub("\128\254X", "\128")
+        return ret
+    else
+        -- local ret = vim.fn.execute('echon "\\' .. str .. '"')
+        -- ret = ret:gsub('<80>', '\128')
+        -- return ret
+        return vim.eval(string.format('"\\%s"', str))
+    end
+end
+
+return M
diff --git a/lua/spacevim/api/vim/regex.lua b/lua/spacevim/api/vim/regex.lua
new file mode 100644
index 000000000..8e6a845e2
--- /dev/null
+++ b/lua/spacevim/api/vim/regex.lua
@@ -0,0 +1,23 @@
+--=============================================================================
+-- regex.lua --- use vim regex in lua
+-- Copyright (c) 2016-2019 Wang Shidong & Contributors
+-- Author: Wang Shidong < wsdjeg@outlook.com >
+-- URL: https://spacevim.org
+-- License: GPLv3
+--=============================================================================
+
+
+-- in viml you can use =~/=~#/=~？
+
+
+local M = {}
+
+M.__cmp = require('spacevim.api').import('vim.compatible')
+
+function M.equal(a, b, ...)
+    local argv = {...}
+    local ignore = argv[1] or false
+    if M.__cmp.fn.matchstr(a, b) == '' then return false else return true end
+end
+
+return M
diff --git a/test/lua/api/prompt.lua b/test/lua/api/prompt.lua
new file mode 100644
index 000000000..61b356569
--- /dev/null
+++ b/test/lua/api/prompt.lua
@@ -0,0 +1,10 @@
+local prompt = require('spacevim.api').import('prompt')
+
+
+local function handle_fly(...)
+    
+end
+
+prompt._handle_fly = handle_fly
+
+prompt.open()
diff --git a/test/lua/api/vim/keys.vader b/test/lua/api/vim/keys.vader
new file mode 100644
index 000000000..c4e0e5285
--- /dev/null
+++ b/test/lua/api/vim/keys.vader
@@ -0,0 +1,9 @@
+Execute ( SpaceVim lua api: vim.keys.t(str) ):
+  if has('nvim-0.5.0') || has('lua')
+    let cmp = SpaceVim#api#import('vim#compatible')
+    lua spacevim_keys = require('spacevim.api').import('vim.keys')
+    AssertEqual cmp.luaeval('spacevim_keys.t("<Right>")'), "\<Right>"
+  else
+    Log 'skip lua test'
+  endif
+