diff --git a/README.md b/README.md
index 5ab5080..369da89 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,14 @@ An [OpenCode](https://opencode.ai) plugin to query account quota usage for multi
 
 ## Supported Platforms
 
-| Platform     | Account Type      | Data Source                                    |
-| ------------ | ----------------- | ---------------------------------------------- |
-| OpenAI       | Plus / Team / Pro | `~/.local/share/opencode/auth.json`            |
-| Zhipu AI     | Coding Plan       | `~/.local/share/opencode/auth.json`            |
-| Z.ai         | Coding Plan       | `~/.local/share/opencode/auth.json`            |
-| GitHub Copilot | Individual / Business | `~/.local/share/opencode/auth.json`            |
-| Google Cloud | Antigravity       | `~/.config/opencode/antigravity-accounts.json` |
+| Platform | Account Type | Data Source |
+| ------------ | --------------------------- | ---------------------------------------------- |
+| Anthropic | Claude Code / Pro / Max | `~/.local/share/opencode/auth.json` |
+| OpenAI | Plus / Team / Pro | `~/.local/share/opencode/auth.json` |
+| Zhipu AI | Coding Plan | `~/.local/share/opencode/auth.json` |
+| Z.ai | Coding Plan | `~/.local/share/opencode/auth.json` |
+| GitHub Copilot | Individual / Business | `~/.local/share/opencode/auth.json` |
+| Google Cloud | Antigravity | `~/.config/opencode/antigravity-accounts.json` |
 
 ## Installation
 
@@ -104,6 +105,18 @@ OpenCode will automatically use the mystatus tool to answer your question.
 ## Output Example
 
 ```
+## Anthropic Account Quota
+
+Account:        Claude
+
+5-hour limit
+██████████████████████████░░░░ 86% remaining
+Resets in: 4h 42m
+
+7-day limit
+█████████████████████████████░ 96% remaining
+Resets in: 6d 23h 42m
+
 ## OpenAI Account Quota
 
 Account:        user@example.com (team)
@@ -161,9 +174,13 @@ Claude     2d 9h      ░░░░░░░░░░░░░░░░░░░
 
 No additional configuration required. The plugin automatically reads credentials from:
 
-- **OpenAI, Zhipu AI, Z.ai & GitHub Copilot**: `~/.local/share/opencode/auth.json`
+- **Anthropic, OpenAI, Zhipu AI, Z.ai & GitHub Copilot**: `~/.local/share/opencode/auth.json`
 - **Google Cloud**: `~/.config/opencode/antigravity-accounts.json`
 
+### Anthropic Setup
+
+To query Anthropic quota, install and authenticate [opencode-claude-auth](https://github.com/griffinmartin/opencode-claude-auth) first so Claude OAuth credentials are synced into OpenCode auth storage.
+
 ### Google Cloud Setup
 
 To query Google Cloud (Antigravity) account quota, you need to install the [opencode-antigravity-auth](https://github.com/NoeFabris/opencode-antigravity-auth) plugin first to authenticate your Google account.
@@ -177,8 +194,9 @@ This plugin is safe to use:
 - `~/.local/share/opencode/auth.json` - OpenCode's official auth storage
 - `~/.config/opencode/antigravity-accounts.json` - Antigravity plugin's account storage
 
-**API Endpoints (all official):**
+**API Endpoints:**
 
+- `https://api.anthropic.com/api/oauth/usage` - Anthropic OAuth quota endpoint
 - `https://chatgpt.com/backend-api/wham/usage` - OpenAI official quota API
 - `https://bigmodel.cn/api/monitor/usage/quota/limit` - Zhipu AI official quota API
 - `https://api.z.ai/api/monitor/usage/quota/limit` - Z.ai official quota API
@@ -192,6 +210,10 @@ This plugin is safe to use:
 - Sensitive information (API keys) is automatically masked in output
 - Source code is fully open for review
 
+### Anthropic Notes
+
+Anthropic quota support relies on OAuth credentials made available by Claude Code / [opencode-claude-auth](https://github.com/griffinmartin/opencode-claude-auth) and a private quota endpoint. It may change if Anthropic changes their OAuth infrastructure.
+
 ## Google Cloud Models
 
 The plugin displays quota for these models:
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 06bb45e..03bf2a5 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -12,13 +12,14 @@
 
 ## 支持的平台
 
-| 平台         | 账号类型          | 数据来源                                       |
-| ------------ | ----------------- | ---------------------------------------------- |
-| OpenAI       | Plus / Team / Pro | `~/.local/share/opencode/auth.json`            |
-| 智谱 AI      | Coding Plan       | `~/.local/share/opencode/auth.json`            |
-| Z.ai         | Coding Plan       | `~/.local/share/opencode/auth.json`            |
-| GitHub Copilot | Individual / Business | `~/.local/share/opencode/auth.json`            |
-| Google Cloud | Antigravity       | `~/.config/opencode/antigravity-accounts.json` |
+| 平台 | 账号类型 | 数据来源 |
+| ------------ | ---------------------------- | ---------------------------------------------- |
+| Anthropic | Claude Code / Pro / Max | `~/.local/share/opencode/auth.json` |
+| OpenAI | Plus / Team / Pro | `~/.local/share/opencode/auth.json` |
+| 智谱 AI | Coding Plan | `~/.local/share/opencode/auth.json` |
+| Z.ai | Coding Plan | `~/.local/share/opencode/auth.json` |
+| GitHub Copilot | Individual / Business | `~/.local/share/opencode/auth.json` |
+| Google Cloud | Antigravity | `~/.config/opencode/antigravity-accounts.json` |
 
 ## 安装
 
@@ -104,6 +105,18 @@ OpenCode 会自动调用 mystatus 工具来回答你的问题。
 ## 输出示例
 
 ```
+## Anthropic 账号额度
+
+Account:        Claude
+
+5小时限额
+██████████████████████████░░░░ 剩余 86%
+重置: 4小时42分钟后
+
+7天限额
+█████████████████████████████░ 剩余 96%
+重置: 6天23小时42分钟后
+
 ## OpenAI 账号额度
 
 Account:        user@example.com (team)
@@ -161,9 +174,13 @@ Claude     2d 9h      ░░░░░░░░░░░░░░░░░░░
 
 无需额外配置。插件自动从以下位置读取认证信息：
 
-- **OpenAI、智谱 AI、Z.ai 和 GitHub Copilot**: `~/.local/share/opencode/auth.json`
+- **Anthropic、OpenAI、智谱 AI、Z.ai 和 GitHub Copilot**: `~/.local/share/opencode/auth.json`
 - **Google Cloud**: `~/.config/opencode/antigravity-accounts.json`
 
+### Anthropic 设置
+
+如需查询 Anthropic 额度，请先安装并完成 [opencode-claude-auth](https://github.com/griffinmartin/opencode-claude-auth) 认证，让 Claude OAuth 凭据同步到 OpenCode 的认证存储中。
+
 ### Google Cloud 设置
 
 如需查询 Google Cloud (Antigravity) 账号额度，需要先安装 [opencode-antigravity-auth](https://github.com/NoeFabris/opencode-antigravity-auth) 插件来完成 Google 账号认证。
@@ -177,8 +194,9 @@ Claude     2d 9h      ░░░░░░░░░░░░░░░░░░░
 - `~/.local/share/opencode/auth.json` - OpenCode 官方认证存储
 - `~/.config/opencode/antigravity-accounts.json` - Antigravity 插件的账号存储
 
-**请求的 API 接口（均为官方接口）：**
+**请求的 API 接口：**
 
+- `https://api.anthropic.com/api/oauth/usage` - Anthropic OAuth 额度接口
 - `https://chatgpt.com/backend-api/wham/usage` - OpenAI 官方额度查询接口
 - `https://bigmodel.cn/api/monitor/usage/quota/limit` - 智谱 AI 官方额度查询接口
 - `https://api.z.ai/api/monitor/usage/quota/limit` - Z.ai 官方额度查询接口
@@ -192,6 +210,10 @@ Claude     2d 9h      ░░░░░░░░░░░░░░░░░░░
 - 敏感信息（API Key）在输出时自动脱敏显示
 - 源代码完全开源，可随时审查
 
+### Anthropic 说明
+
+Anthropic 额度支持依赖 Claude Code / [opencode-claude-auth](https://github.com/griffinmartin/opencode-claude-auth) 提供的 OAuth 凭据以及一个私有额度接口。如果 Anthropic 调整 OAuth 基础设施，这部分功能可能会失效。
+
 ## Google Cloud 模型
 
 插件显示以下模型的额度：
diff --git a/package.json b/package.json
index 2a5530c..31e09a3 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "opencode-mystatus",
   "version": "1.2.4",
-  "description": "Check all your AI subscription quotas in one command. Supports OpenAI, Zhipu AI, Z.ai, and Google Antigravity. More platforms coming soon.",
+  "description": "Check all your AI subscription quotas in one command. Supports Anthropic, OpenAI, Zhipu AI, Z.ai, GitHub Copilot, and Google Antigravity.",
   "type": "module",
   "main": "dist/plugin/mystatus.js",
   "types": "dist/plugin/mystatus.d.ts",
diff --git a/plugin/lib/anthropic.ts b/plugin/lib/anthropic.ts
new file mode 100644
index 0000000..9feda33
--- /dev/null
+++ b/plugin/lib/anthropic.ts
@@ -0,0 +1,133 @@
+import { t } from "./i18n";
+import { type AnthropicAuthData, type QueryResult } from "./types";
+import {
+  calcRemainPercent,
+  createProgressBar,
+  fetchWithTimeout,
+  formatDuration,
+  getResetAfterSeconds,
+} from "./utils";
+
+interface AnthropicUsageWindow {
+  utilization: number;
+  resets_at?: string;
+}
+
+interface AnthropicExtraUsage {
+  is_enabled?: boolean;
+  used_credits?: number;
+  monthly_limit?: number;
+}
+
+interface AnthropicUsageResponse {
+  five_hour?: AnthropicUsageWindow;
+  seven_day?: AnthropicUsageWindow;
+  extra_usage?: AnthropicExtraUsage;
+}
+
+const ANTHROPIC_USAGE_URL = "https://api.anthropic.com/api/oauth/usage";
+const ANTHROPIC_BETA = "oauth-2025-04-20";
+
+function formatCredits(cents: number): string {
+  return `$${(cents / 100).toFixed(2)}`;
+}
+
+function formatWindow(
+  title: string,
+  window: AnthropicUsageWindow | undefined,
+): string[] {
+  if (!window)
+    return [];
+
+  const remainPercent = calcRemainPercent(window.utilization);
+  const progressBar = createProgressBar(remainPercent);
+  const lines = [title, `${progressBar} ${t.remaining(remainPercent)}`];
+  const resetAfterSeconds = getResetAfterSeconds(window.resets_at);
+
+  if (resetAfterSeconds !== null) {
+    lines.push(t.resetIn(formatDuration(resetAfterSeconds)));
+  }
+
+  return lines;
+}
+
+async function fetchAnthropicUsage(
+  accessToken: string,
+): Promise<AnthropicUsageResponse> {
+  const response = await fetchWithTimeout(ANTHROPIC_USAGE_URL, {
+    headers: {
+      Authorization: `Bearer ${accessToken}`,
+      "anthropic-beta": ANTHROPIC_BETA,
+      "Content-Type": "application/json",
+      "User-Agent": "OpenCode-Status-Plugin/1.0",
+    },
+  });
+
+  if (!response.ok) {
+    const errorText = await response.text();
+    throw new Error(t.anthropicApiError(response.status, errorText));
+  }
+
+  return response.json() as Promise<AnthropicUsageResponse>;
+}
+
+function formatAnthropicUsage(data: AnthropicUsageResponse): string {
+  const lines: string[] = [];
+
+  lines.push(`${t.account}        ${t.anthropicAccountName}`);
+
+  const fiveHourLines = formatWindow(t.fiveHourLimit, data.five_hour);
+  const sevenDayLines = formatWindow(t.sevenDayLimit, data.seven_day);
+
+  if (fiveHourLines.length > 0) {
+    lines.push("");
+    lines.push(...fiveHourLines);
+  }
+
+  if (sevenDayLines.length > 0) {
+    lines.push("");
+    lines.push(...sevenDayLines);
+  }
+
+  if (data.extra_usage?.is_enabled && data.extra_usage.monthly_limit) {
+    lines.push("");
+    lines.push(
+      `${t.extraUsage}: ${formatCredits(data.extra_usage.used_credits || 0)} / ${formatCredits(data.extra_usage.monthly_limit)}`,
+    );
+  }
+
+  if (lines.length === 1) {
+    lines.push("");
+    lines.push(t.noQuotaData);
+  }
+
+  return lines.join("\n");
+}
+
+export async function queryAnthropicUsage(
+  authData: AnthropicAuthData | undefined,
+): Promise<QueryResult | null> {
+  if (!authData || authData.type !== "oauth" || !authData.access) {
+    return null;
+  }
+
+  if (authData.expires && authData.expires < Date.now()) {
+    return {
+      success: false,
+      error: t.anthropicTokenExpired,
+    };
+  }
+
+  try {
+    const usage = await fetchAnthropicUsage(authData.access);
+    return {
+      success: true,
+      output: formatAnthropicUsage(usage),
+    };
+  } catch (err) {
+    return {
+      success: false,
+      error: err instanceof Error ? err.message : String(err),
+    };
+  }
+}
diff --git a/plugin/lib/i18n.ts b/plugin/lib/i18n.ts
index 2c15d4b..24d8efc 100644
--- a/plugin/lib/i18n.ts
+++ b/plugin/lib/i18n.ts
@@ -53,9 +53,12 @@ const translations = {
     // 限额相关
     hourLimit: (h: number) => `${h}小时限额`,
     dayLimit: (d: number) => `${d}天限额`,
+    fiveHourLimit: "5小时限额",
+    sevenDayLimit: "7天限额",
     remaining: (p: number) => `剩余 ${p}%`,
     resetIn: (t: string) => `重置: ${t}后`,
     limitReached: "⚠️ 已达到限额上限!",
+    extraUsage: "额外用量",
 
     // 通用
     account: "Account:",
@@ -67,17 +70,23 @@ const translations = {
       `❌ 无法读取认证文件: ${path}\n错误: ${err}`,
     apiError: (status: number, text: string) =>
       `OpenAI API 请求失败 (${status}): ${text}`,
+    anthropicApiError: (status: number, text: string) =>
+      `Anthropic API 请求失败 (${status}): ${text}`,
     timeoutError: (seconds: number) => `请求超时 (${seconds}秒)`,
     tokenExpired:
       "⚠️ OAuth 授权已过期，请在 OpenCode 中使用一次 OpenAI 模型以刷新授权。",
+    anthropicTokenExpired:
+      "⚠️ Claude OAuth 授权已过期，请在 OpenCode 中使用一次 Anthropic 模型以刷新授权。",
     noAccounts:
-      "未找到任何已配置的账号。\n\n支持的账号类型:\n- OpenAI (Plus/Team/Pro 订阅用户)\n- 智谱 AI (Coding Plan)\n- Z.ai (Coding Plan)\n- Google Cloud (Antigravity)",
+      "未找到任何已配置的账号。\n\n支持的账号类型:\n- Anthropic (Claude Code / Pro / Max)\n- OpenAI (Plus/Team/Pro 订阅用户)\n- 智谱 AI (Coding Plan)\n- Z.ai (Coding Plan)\n- GitHub Copilot\n- Google Cloud (Antigravity)",
     queryFailed: "❌ 查询失败的账号:\n",
 
     // 平台标题
+    anthropicTitle: "## Anthropic 账号额度",
     openaiTitle: "## OpenAI 账号额度",
     zhipuTitle: "## 智谱 AI 账号额度",
     zaiTitle: "## Z.ai 账号额度",
+    anthropicAccountName: "Claude",
 
     // 智谱 AI 相关
     zhipuApiError: (status: number, text: string) =>
@@ -131,9 +140,12 @@ const translations = {
     // 限额相关
     hourLimit: (h: number) => `${h}-hour limit`,
     dayLimit: (d: number) => `${d}-day limit`,
+    fiveHourLimit: "5-hour limit",
+    sevenDayLimit: "7-day limit",
     remaining: (p: number) => `${p}% remaining`,
     resetIn: (t: string) => `Resets in: ${t}`,
     limitReached: "⚠️ Rate limit reached!",
+    extraUsage: "Extra usage",
 
     // 通用
     account: "Account:",
@@ -145,17 +157,23 @@ const translations = {
       `❌ Failed to read auth file: ${path}\nError: ${err}`,
     apiError: (status: number, text: string) =>
       `OpenAI API request failed (${status}): ${text}`,
+    anthropicApiError: (status: number, text: string) =>
+      `Anthropic API request failed (${status}): ${text}`,
     timeoutError: (seconds: number) => `Request timeout (${seconds}s)`,
     tokenExpired:
       "⚠️ OAuth token expired. Please use an OpenAI model in OpenCode to refresh authorization.",
+    anthropicTokenExpired:
+      "⚠️ Claude OAuth token expired. Please use an Anthropic model in OpenCode to refresh authorization.",
     noAccounts:
-      "No configured accounts found.\n\nSupported account types:\n- OpenAI (Plus/Team/Pro subscribers)\n- Zhipu AI (Coding Plan)\n- Z.ai (Coding Plan)\n- Google Cloud (Antigravity)",
+      "No configured accounts found.\n\nSupported account types:\n- Anthropic (Claude Code / Pro / Max)\n- OpenAI (Plus/Team/Pro subscribers)\n- Zhipu AI (Coding Plan)\n- Z.ai (Coding Plan)\n- GitHub Copilot\n- Google Cloud (Antigravity)",
     queryFailed: "❌ Failed to query accounts:\n",
 
     // 平台标题
+    anthropicTitle: "## Anthropic Account Quota",
     openaiTitle: "## OpenAI Account Quota",
     zhipuTitle: "## Zhipu AI Account Quota",
     zaiTitle: "## Z.ai Account Quota",
+    anthropicAccountName: "Claude",
 
     // 智谱 AI 相关
     zhipuApiError: (status: number, text: string) =>
diff --git a/plugin/lib/types.ts b/plugin/lib/types.ts
index 01543f8..6048a9b 100644
--- a/plugin/lib/types.ts
+++ b/plugin/lib/types.ts
@@ -32,6 +32,16 @@ export interface OpenAIAuthData {
   expires?: number;
 }
 
+/**
+ * Anthropic OAuth 认证数据
+ */
+export interface AnthropicAuthData {
+  type: string;
+  access?: string;
+  refresh?: string;
+  expires?: number;
+}
+
 /**
  * 智谱 AI API 认证数据
  */
@@ -97,6 +107,7 @@ export interface AntigravityAccountsFile {
  * 完整认证数据结构
  */
 export interface AuthData {
+  anthropic?: AnthropicAuthData;
   openai?: OpenAIAuthData;
   "zhipuai-coding-plan"?: ZhipuAuthData;
   "zai-coding-plan"?: ZhipuAuthData;
diff --git a/plugin/lib/utils.ts b/plugin/lib/utils.ts
index 157874e..a1bf0f7 100644
--- a/plugin/lib/utils.ts
+++ b/plugin/lib/utils.ts
@@ -28,6 +28,18 @@ export function formatDuration(seconds: number): string {
   return parts.join(currentLang === "en" ? " " : "");
 }
 
+/**
+ * 将 ISO 时间转换为距离现在的剩余秒数
+ */
+export function getResetAfterSeconds(isoTime: string | undefined): number | null {
+  if (!isoTime) return null;
+
+  const resetDate = new Date(isoTime);
+  if (Number.isNaN(resetDate.getTime())) return null;
+
+  return Math.max(0, Math.floor((resetDate.getTime() - Date.now()) / 1000));
+}
+
 // ============================================================================
 // 进度条
 // ============================================================================
diff --git a/plugin/mystatus.ts b/plugin/mystatus.ts
index 00eddee..f91a8b6 100644
--- a/plugin/mystatus.ts
+++ b/plugin/mystatus.ts
@@ -14,6 +14,7 @@ import { join } from "path";
 
 import { t } from "./lib/i18n";
 import { type AuthData, type QueryResult } from "./lib/types";
+import { queryAnthropicUsage } from "./lib/anthropic";
 import { queryOpenAIUsage } from "./lib/openai";
 import { queryZaiUsage, queryZhipuUsage } from "./lib/zhipu";
 import { queryGoogleUsage } from "./lib/google";
@@ -28,7 +29,7 @@ export const MyStatusPlugin: Plugin = async () => {
     tool: {
       mystatus: tool({
         description:
-          "Query account quota usage for all configured AI platforms. Returns remaining quota percentages, usage stats, and reset countdowns with visual progress bars. Currently supports OpenAI (ChatGPT/Codex), Zhipu AI, Z.ai, Google Antigravity, and GitHub Copilot.",
+          "Query account quota usage for all configured AI platforms. Returns remaining quota percentages, usage stats, and reset countdowns with visual progress bars. Currently supports Anthropic (Claude), OpenAI (ChatGPT/Codex), Zhipu AI, Z.ai, Google Antigravity, and GitHub Copilot.",
         args: {},
         async execute() {
           // 1. 读取 auth.json
@@ -46,8 +47,9 @@ export const MyStatusPlugin: Plugin = async () => {
           }
 
           // 2. 并行查询所有平台（Google 不依赖 authData）
-          const [openaiResult, zhipuResult, zaiResult, googleResult, copilotResult] =
+          const [anthropicResult, openaiResult, zhipuResult, zaiResult, googleResult, copilotResult] =
             await Promise.all([
+              queryAnthropicUsage(authData.anthropic),
               queryOpenAIUsage(authData.openai),
               queryZhipuUsage(authData["zhipuai-coding-plan"]),
               queryZaiUsage(authData["zai-coding-plan"]),
@@ -59,6 +61,8 @@ export const MyStatusPlugin: Plugin = async () => {
           const results: string[] = [];
           const errors: string[] = [];
 
+          collectResult(anthropicResult, t.anthropicTitle, results, errors);
+
           // 处理 OpenAI 结果
           collectResult(openaiResult, t.openaiTitle, results, errors);