diff --git a/crowdin.yml b/crowdin.yml
new file mode 100644
index 0000000..2f787ca
--- /dev/null
+++ b/crowdin.yml
@@ -0,0 +1,6 @@
+pull_request_title: 'i18n: update translations'
+pull_request_labels:
+  - i18n
+files:
+  - source: /src/locales/zh-CN.yml
+    translation: /src/locales/%locale%.yml
diff --git a/package.json b/package.json
index f0b4811..07189f9 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "koishi-plugin-market-info",
   "description": "Koishi plugin market information",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",
   "files": [
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..d9c07d1
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,5 @@
+# koishi-plugin-market-info
+
+[![npm](https://img.shields.io/npm/v/koishi-plugin-market-info?style=flat-square)](https://www.npmjs.com/package/koishi-plugin-market-info)
+
+插件市场信息查询与订阅。
diff --git a/src/index.ts b/src/index.ts
index a2480f5..fb7ec69 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -38,6 +38,8 @@ function makeDict(result: MarketResult) {
 }
 
 export function apply(ctx: Context, config: Config) {
+  ctx.i18n.define('zh', require('./locales/zh-CN.yml'))
+
   const getMarket = async () => {
     const data = await ctx.http.get<MarketResult>('https://registry.koishi.chat/market.json')
     return makeDict(data)
@@ -46,14 +48,18 @@ export function apply(ctx: Context, config: Config) {
   ctx.on('ready', async () => {
     let previous = await getMarket()
 
+    ctx.command('market')
+      .action(async ({ session }) => {
+        return session.text('.overview', [Object.keys(previous).length])
+      })
+
     ctx.setInterval(async () => {
       const current = await getMarket()
-      const diff = Object.keys({ ...previous, ...current }).map((name) => {
+      const diff = Object.keys(current).map((name) => {
         const version1 = previous[name]?.version
         const version2 = current[name]?.version
         if (version1 === version2) return
         if (!version1) return '新增：' + name
-        if (!version2) return '移除：' + name
         return `更新：${name} (${version1} → ${version2})`
       }).filter(Boolean).sort()
       previous = current
diff --git a/src/locales/zh-CN.yml b/src/locales/zh-CN.yml
new file mode 100644
index 0000000..3b9f4fc
--- /dev/null
+++ b/src/locales/zh-CN.yml
@@ -0,0 +1,6 @@
+commands:
+  market:
+    description: 插件市场信息
+
+    messages:
+      overview: 当前共有 {0} 个插件。