diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
new file mode 100644
index 0000000..f44d298
--- /dev/null
+++ b/.github/workflows/publish.yaml
@@ -0,0 +1,79 @@
+name: generate and publish manifest
+
+on:
+  push:
+    tags: [ 'v*' ]
+
+permissions:
+  contents: write
+
+jobs:
+  generate-manifest-json:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set repo name
+        run: |
+          echo "REPO_NAME=$(echo ${{ github.repository }} | cut -d'/' -f2)" >> $GITHUB_ENV
+          echo "VERSION=$(echo ${{ github.ref }} | cut -d'/' -f3 | cut -c2-)" >> $GITHUB_ENV
+      - uses: actions/checkout@v2
+
+      - name: Set up Lua
+        uses: leafo/gh-actions-lua@v8
+        with:
+          luaVersion: '5.3.5'
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get install luarocks
+          sudo luarocks install dkjson
+
+      - name: Generate manifest
+        run: |
+          sudo lua -e '
+          require("metadata"); 
+          local dkjson = require("dkjson"); 
+          PLUGIN.downloadUrl = "https://github.com/${{ github.repository }}/releases/download/v${{ env.VERSION }}/${{ env.REPO_NAME }}-${{ env.VERSION }}.zip"; 
+          local str = dkjson.encode(PLUGIN); 
+          print(str)' > manifest.json
+          cat manifest.json
+      - name: Upload JSON file
+        uses: actions/upload-artifact@v2
+        with:
+          name: manifest
+          path: manifest.json
+  release-plugin-and-manifest:
+      needs: generate-manifest-json
+      runs-on: ubuntu-latest
+      steps:
+      - name: Set repo name
+        run: |
+          echo "REPO_NAME=$(echo ${{ github.repository }} | cut -d'/' -f2)" >> $GITHUB_ENV
+          echo "VERSION=$(echo ${{ github.ref }} | cut -d'/' -f3 | cut -c2-)" >> $GITHUB_ENV
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Download JSON file
+        uses: actions/download-artifact@v2
+        with:
+          name: manifest
+      - name: Compress build files
+        uses: thedoctor0/zip-release@0.7.6
+        with:
+          type: "zip"
+          directory: "./"
+          filename: "${{ env.REPO_NAME }}-${{ env.VERSION }}.zip"
+          exclusions: "*.git* manifest.json"
+      - name: Publish release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: ./${{ env.REPO_NAME }}-${{ env.VERSION }}.zip
+          tag: v${{ env.VERSION }}
+          file_glob: true
+      - name: Publish manifest
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: ./manifest.json
+          tag: "manifest"
+          overwrite: true
+          file_glob: true
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..723ef36
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea
\ No newline at end of file
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..e69de29
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..f609fd2
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+  "Lua.diagnostics.globals": [
+    "fetchVersions"
+  ]
+}
\ No newline at end of file
diff --git a/Injection.lua b/Injection.lua
new file mode 100644
index 0000000..a18c044
--- /dev/null
+++ b/Injection.lua
@@ -0,0 +1,17 @@
+--[[
+Do not change any thing in the current file,
+it's just there to show what objects are injected by vfox and what they do.
+
+It's just handy when developing plugins, IDE can use this object for code hints!
+ --]]
+RUNTIME = {
+    --- Operating system type at runtime (Windows, Linux, Darwin)
+    osType = "",
+    --- Operating system architecture at runtime (amd64, arm64, etc.)
+    archType = "",
+    --- vfox runtime version
+    version = "",
+    --- Plugin directory
+    pluginDirPath = "",
+}
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..025aeda
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2020-present, Andreas Weber
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0b82774
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# Introduction
+vfox-mani is a plugin for [vfox](https://vfox.lhan.me/).
+# Install
+After installing vfox, run the following command to add the plugin:
+```bash
+vfox add mani
+```
\ No newline at end of file
diff --git a/hooks/available.lua b/hooks/available.lua
new file mode 100644
index 0000000..2cf46cb
--- /dev/null
+++ b/hooks/available.lua
@@ -0,0 +1,6 @@
+--- Return all available versions provided by this plugin
+--- @param ctx table Empty table used as context, for future extension
+--- @return table Descriptions of available versions and accompanying tool descriptions
+function PLUGIN:Available(ctx)
+    return fetchVersions()
+end
diff --git a/hooks/env_keys.lua b/hooks/env_keys.lua
new file mode 100644
index 0000000..c5602e2
--- /dev/null
+++ b/hooks/env_keys.lua
@@ -0,0 +1,23 @@
+--- Each SDK may have different environment variable configurations.
+--- This allows plugins to define custom environment variables (including PATH settings)
+--- Note: Be sure to distinguish between environment variable settings for different platforms!
+--- @param ctx table Context information
+function PLUGIN:EnvKeys(ctx)
+    --- this variable is same as ctx.sdkInfo['plugin-name'].path
+    local mainPath = ctx.path
+    local mainSdkInfo = ctx.main
+    local mpath = mainSdkInfo.path
+    local mversion = mainSdkInfo.version
+    local mname = mainSdkInfo.name
+    local sdkInfo = ctx.sdkInfo['sdk-name']
+    local path = sdkInfo.path
+    local version = sdkInfo.version
+    local name = sdkInfo.name
+    return {
+        {
+            key = "PATH",
+            value = mainPath .. "/bin"
+        },
+
+    }
+end
diff --git a/hooks/parse_legacy_file.lua b/hooks/parse_legacy_file.lua
new file mode 100644
index 0000000..df56b0d
--- /dev/null
+++ b/hooks/parse_legacy_file.lua
@@ -0,0 +1,12 @@
+--- Parse the legacy file found by vfox to determine the version of the tool.
+--- Useful to extract version numbers from files like JavaScript's package.json or Golangs go.mod.
+function PLUGIN:ParseLegacyFile(ctx)
+    local filename = ctx.filename
+    local filepath = ctx.filepath
+    --- You can get a list of installed versions of the current plugin by this function.
+    local versions = ctx:getInstalledVersions()
+
+    return {
+        version = "xxx"
+    }
+end
\ No newline at end of file
diff --git a/hooks/post_install.lua b/hooks/post_install.lua
new file mode 100644
index 0000000..4bf262a
--- /dev/null
+++ b/hooks/post_install.lua
@@ -0,0 +1,12 @@
+--- Extension point, called after PreInstall, can perform additional operations,
+--- such as file operations for the SDK installation directory or compile source code
+--- Currently can be left unimplemented!
+function PLUGIN:PostInstall(ctx)
+    --- ctx.rootPath SDK installation directory
+    local rootPath = ctx.rootPath
+    local sdkInfo = ctx.sdkInfo['sdk-name']
+    local path = sdkInfo.path
+    local version = sdkInfo.version
+    local name = sdkInfo.name
+    local note = sdkInfo.note
+end
\ No newline at end of file
diff --git a/hooks/pre_install.lua b/hooks/pre_install.lua
new file mode 100644
index 0000000..9d09f60
--- /dev/null
+++ b/hooks/pre_install.lua
@@ -0,0 +1,38 @@
+--- Returns some pre-installed information, such as version number, download address, local files, etc.
+--- If checksum is provided, vfox will automatically check it for you.
+
+--- @return table Version information
+function PLUGIN:PreInstall(ctx)
+    local version = ctx.version
+    return {
+        --- Version number
+        version = "xxx",
+        --- remote URL or local file path [optional]
+        url = "xxx",
+        --- SHA256 checksum [optional]
+        sha256 = "xxx",
+        --- md5 checksum [optional]
+        md5 = "xxx",
+        --- sha1 checksum [optional]
+        sha1 = "xxx",
+        --- sha512 checksum [optional]
+        sha512 = "xx",
+        --- additional need files [optional]
+        addition = {
+            {
+                --- additional file name !
+                name = "xxx",
+                --- remote URL or local file path [optional]
+                url = "xxx",
+                --- SHA256 checksum [optional]
+                sha256 = "xxx",
+                --- md5 checksum [optional]
+                md5 = "xxx",
+                --- sha1 checksum [optional]
+                sha1 = "xxx",
+                --- sha512 checksum [optional]
+                sha512 = "xx",
+            }
+        }
+    }
+end
diff --git a/hooks/pre_uninstall.lua b/hooks/pre_uninstall.lua
new file mode 100644
index 0000000..f78866f
--- /dev/null
+++ b/hooks/pre_uninstall.lua
@@ -0,0 +1,9 @@
+
+--- This is called before the SDK is uninstalled.
+--- @param ctx table Context information
+function PLUGIN:PreUninstall(ctx)
+    local mainSdkInfo = ctx.main
+    local mpath = mainSdkInfo.path
+    local mversion = mainSdkInfo.version
+    local mname = mainSdkInfo.name
+end
\ No newline at end of file
diff --git a/hooks/pre_use.lua b/hooks/pre_use.lua
new file mode 100644
index 0000000..daf6d36
--- /dev/null
+++ b/hooks/pre_use.lua
@@ -0,0 +1,27 @@
+--- When user invoke `use` command, this function will be called to get the
+--- valid version information.
+--- @param ctx table Context information
+function PLUGIN:PreUse(ctx)
+    --- user input version
+    local version = ctx.version
+    --- user current used version
+    local previousVersion = ctx.previousVersion
+
+    --- installed sdks
+    local sdkInfo = ctx.installedSdks['version']
+    local path = sdkInfo.path
+    local name = sdkInfo.name
+    local version = sdkInfo.version
+
+    --- working directory
+    local cwd = ctx.cwd
+
+    --- user input scope
+    --- could be one of global/project/session
+    local scope = ctx.scope
+
+    --- return the version information
+    return {
+        version = version,
+    }
+end
\ No newline at end of file
diff --git a/lib/client.lua b/lib/client.lua
new file mode 100644
index 0000000..cd35be2
--- /dev/null
+++ b/lib/client.lua
@@ -0,0 +1,45 @@
+local http = require("http")
+local json = require("json")
+local util = require("./util")
+
+function fetchVersions()
+  local result = {}
+  local headers = {
+    ["Accept"] = "application/vnd.github+json",
+  }
+  if isGithubToken(util.githubToken) then
+    headers = {
+      ["Accept"] = "application/vnd.github+json",
+      ["Authorization"] = "Bearer " .. util.githubToken,
+    }
+  end
+  local resp, err = http.get({
+    -- Authenticate to get higher rate limit
+    headers = headers,
+    url = "https://api.github.com/repos/alajmo/mani/releases?per_page=60",
+  })
+  if err ~= nil then
+    error("Failed to get information: " .. err)
+  end
+  if resp.status_code ~= 200 then
+    error("Failed to get information: " .. err .. "\nstatus_code => " .. resp.status_code)
+  end
+  local releases = json.decode(resp.body)
+
+  for i, release in ipairs(releases) do
+    if i == 1 then
+      table.insert(result, {
+        version = release.tag_name,
+        note = "latest",
+      })
+    else
+      table.insert(result, {
+        version = release.tag_name,
+      })
+    end
+    ::continue::
+  end
+
+
+  return result
+end
diff --git a/lib/util.lua b/lib/util.lua
new file mode 100644
index 0000000..04f5ddd
--- /dev/null
+++ b/lib/util.lua
@@ -0,0 +1,66 @@
+local strings = require("vfox.strings")
+
+function getDate()
+    local current_date = os.date("*t")
+    local formatted_date = string.format("%04d%02d%02d", current_date.year, current_date.month, current_date.day)
+    return formatted_date
+end
+
+function compareVersion(currentVersion, targetVersion)
+    local currentVersionArray = strings.split(currentVersion, ".")
+    local compareVersionArray = strings.split(targetVersion, ".")
+
+    for i, v in ipairs(currentVersionArray) do
+        if tonumber(v) > tonumber(compareVersionArray[i]) then
+            return 1
+        elseif tonumber(v) < tonumber(compareVersionArray[i]) then
+            return -1
+        end
+    end
+    return 0
+end
+
+function generateURL(version, osType, archType)
+    local file
+    local githubURL = os.getenv("GITHUB_URL") or "https://github.com/"
+    local baseURL = githubURL:gsub("/$", "") .. "/crystal-lang/crystal/releases/download/%s/crystal-%s-"
+
+    if osType == "darwin" then
+        -- new filename since 1.2.0
+        if compareVersion(version, "1.2.0") >= 0 then
+            file = baseURL .. "1-darwin-universal.tar.gz"
+        elseif archType == "amd64" then
+            file = baseURL .. "1-darwin-x86_64.tar.gz"
+        else
+            error("Crystal does not provide darwin-" .. archType .. " v" .. version .. " release")
+        end
+    elseif osType == "linux" and archType == "amd64" then
+        file = baseURL .. "1-linux-x86_64.tar.gz"
+    elseif osType == "windows" and archType == "amd64" then
+        file = baseURL .. "windows-x86_64-msvc-unsupported.zip"
+    else
+        error("Crystal does not provide " .. osType .. "-" .. archType .. " release")
+    end
+    file = file:format(version, version)
+
+    return file
+end
+
+function isGithubToken(token)
+    local character = "[a-zA-Z0-9]"
+    -- Personal Access Token (Classic)
+    if token:match("^ghp_" .. character:rep(36) .. "$") then
+        return true
+    -- Personal Access Token (Fine-Grained)
+    elseif token:match("^github_pat_" .. character:rep(22) .. "_" .. character:rep(59) .. "$") then
+        return true
+    end
+
+    return false
+end
+
+return {
+    -- Authenticate to get higher rate limit   ↓ Add your GitHub Token here
+    githubToken = os.getenv("GITHUB_TOKEN") or "",
+    dataVersion = getDate(),
+}
\ No newline at end of file
diff --git a/metadata.lua b/metadata.lua
new file mode 100644
index 0000000..b73786e
--- /dev/null
+++ b/metadata.lua
@@ -0,0 +1,44 @@
+--- !!! DO NOT EDIT OR RENAME !!!
+PLUGIN = {}
+
+--- !!! MUST BE SET !!!
+--- Plugin name
+PLUGIN.name = "mani"
+--- Plugin version
+PLUGIN.version = "0.0.1"
+--- Plugin homepage
+PLUGIN.homepage = "https://github.com/anweber/vfox-mani"
+--- Plugin license, please choose a correct license according to your needs.
+PLUGIN.license = "MIT"
+--- Plugin description
+PLUGIN.description = "mani - CLI tool to help you manage repositories"
+
+
+--- !!! OPTIONAL !!!
+--[[
+NOTE:
+    Minimum compatible vfox version.
+    If the plugin is not compatible with the current vfox version,
+    vfox will not load the plugin and prompt the user to upgrade vfox.
+ --]]
+PLUGIN.minRuntimeVersion = "0.3.0"
+--[[
+NOTE:
+    If configured, vfox will check for updates to the plugin at this address,
+    otherwise it will check for updates at the global registry.
+
+    If you want use the global registry to distribute your plugin, you can remove this field.
+
+    If you develop a plugin based on the template, which will automatically generate a manifest file by CI,
+    you can set this address to the manifest file address, so that the plugin can be updated automatically.
+
+ --]]
+PLUGIN.manifestUrl = "https://github.com/anweber/vfox-mani/releases/download/manifest/manifest.json"
+-- Some things that need user to be attention!
+PLUGIN.notes = {
+}
+
+--- List legacy configuration filenames for determining the specified version of the tool.
+--- such as ".node-version", ".nvmrc", etc.
+PLUGIN.legacyFilenames = {
+}