diff --git a/plugins/chksz.splayer-source.js b/plugins/chksz.splayer-source.js
new file mode 100644
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--- /dev/null
+++ b/plugins/chksz.splayer-source.js
@@ -0,0 +1,323 @@
+/**
+ * @name        ChKSz 音源
+ * @id          chksz.splayer-source
+ * @version     0.1.0
+ * @description 使用 ChKSz API 解析网易云、QQ 音乐和酷狗播放地址
+ * @author      HSJ-BanFan
+ * @homepage    https://github.com/HSJ-BanFan/splayer-chksz-plugin
+ * @type        source
+ * @grant       network
+ * @apiLevel    1
+ * @updateUrl   https://raw.githubusercontent.com/HSJ-BanFan/splayer-chksz-plugin/main/dist/chksz.splayer-source.js
+ * @changelog   首次公开发布
+ */
+
+const API_BASE_URL = "https://api.chksz.com";
+const API_KEY_SETTING = "apiKey";
+const REQUEST_TIMEOUT = 20_000;
+
+const SOURCE_CONFIG = {
+  wy: {
+    name: "ChKSz 网易云",
+    endpoint: "/api/163_music",
+    idParameter: "id",
+    qualityParameter: "level",
+    qualityValues: {
+      "hi-res": "hires",
+      lossless: "lossless",
+      hq: "exhigh",
+      sq: "exhigh",
+      lq: "standard",
+    },
+  },
+  tx: {
+    name: "ChKSz QQ 音乐",
+    endpoint: "/api/qq_music",
+    idParameter: "mid",
+    qualityParameter: "size",
+    qualityValues: {
+      "hi-res": "hires",
+      lossless: "flac",
+      hq: "320k",
+      sq: "320k",
+      lq: "128k",
+    },
+  },
+  kg: {
+    name: "ChKSz 酷狗",
+    endpoint: "/api/kugou_music",
+    idParameter: "id",
+    qualityParameter: "size",
+    qualityValues: {
+      "hi-res": "hires",
+      lossless: "flac",
+      hq: "320k",
+      sq: "320k",
+      lq: "128k",
+    },
+  },
+};
+
+const QUALITY_NAMES = ["lq", "sq", "hq", "lossless", "hi-res"];
+
+const isRecord = (value) => value !== null && typeof value === "object" && !Array.isArray(value);
+
+const pluginError = (code, message) => {
+  const error = new Error(message);
+  error.code = code;
+  return error;
+};
+
+const getApiKey = () => {
+  const value = splayer.getSetting(API_KEY_SETTING);
+  const apiKey = typeof value === "string" ? value.trim() : "";
+
+  if (!apiKey) {
+    throw pluginError(
+      "CHKSZ_CONFIG_MISSING",
+      "未配置 ChKSz API Key：请打开 设置 → 插件管理 → ChKSz 音源 → 配置。",
+    );
+  }
+
+  // RFC 3986 unreserved characters; this prevents accidentally sending whitespace or a URL.
+  if (!/^chksz_[A-Za-z0-9._~-]+$/.test(apiKey)) {
+    throw pluginError(
+      "CHKSZ_CONFIG_INVALID",
+      "ChKSz API Key 格式无效：Key 应以 chksz_ 开头，并只包含 URL 安全字符。",
+    );
+  }
+
+  return apiKey;
+};
+
+const getMusicId = (musicInfo) => {
+  if (!isRecord(musicInfo)) {
+    throw pluginError("CHKSZ_TRACK_INVALID", "SPlayer 未提供有效的歌曲信息。");
+  }
+
+  for (const key of ["songmid", "id", "songId"]) {
+    const value = musicInfo[key];
+    if (typeof value === "string" && value.trim()) return value.trim();
+    if (typeof value === "number" && Number.isFinite(value)) return String(value);
+  }
+
+  throw pluginError("CHKSZ_TRACK_INVALID", "歌曲缺少平台 ID，无法请求 ChKSz。");
+};
+
+const buildApiUrl = (endpoint, params) => {
+  const url = new URL(`${API_BASE_URL}${endpoint}`);
+  for (const [key, value] of Object.entries({ ...params, apikey: getApiKey() })) {
+    if (value !== undefined && value !== null && value !== "") {
+      url.searchParams.set(key, String(value));
+    }
+  }
+  return url.toString();
+};
+
+const getBodyMessage = (body) => {
+  if (!isRecord(body)) return "";
+  for (const key of ["msg", "message", "error"]) {
+    const value = body[key];
+    if (typeof value === "string" && value.trim()) return value.trim();
+    if (isRecord(value) && typeof value.message === "string" && value.message.trim()) {
+      return value.message.trim();
+    }
+  }
+  return "";
+};
+
+const getHeader = (headers, name) => {
+  if (!isRecord(headers)) return "";
+  const wanted = name.toLowerCase();
+  for (const [key, value] of Object.entries(headers)) {
+    if (key.toLowerCase() === wanted && typeof value === "string") return value;
+  }
+  return "";
+};
+
+const throwHttpError = (response) => {
+  const status = Number(response?.status) || 0;
+  const bodyMessage = getBodyMessage(response?.body);
+  const parts = [`ChKSz 请求失败（HTTP ${status}）`];
+  if (bodyMessage) parts.push(bodyMessage);
+
+  if (status === 429) {
+    const retryAfter = getHeader(response?.headers, "retry-after");
+    if (retryAfter) parts.push(`请在 ${retryAfter} 秒后再试`);
+  }
+
+  const code = status > 0 ? `CHKSZ_HTTP_${status}` : "CHKSZ_HTTP_ERROR";
+  throw pluginError(code, parts.join("："));
+};
+
+const requestJson = async (endpoint, params) => {
+  const response = await splayer.request(buildApiUrl(endpoint, params), {
+    method: "GET",
+    responseType: "json",
+    timeout: REQUEST_TIMEOUT,
+  });
+
+  if (!response || Number(response.status) < 200 || Number(response.status) >= 300) {
+    throwHttpError(response);
+  }
+
+  if (!isRecord(response.body)) {
+    throw pluginError("CHKSZ_INVALID_RESPONSE", "ChKSz 返回的不是有效 JSON 对象。");
+  }
+
+  return response.body;
+};
+
+const getConfiguredSource = (source) => {
+  const config = SOURCE_CONFIG[source];
+  if (!config) {
+    throw pluginError("CHKSZ_SOURCE_UNSUPPORTED", `不支持的 SPlayer 音源：${String(source)}。`);
+  }
+  return config;
+};
+
+const buildTrackParams = (source, id, quality) => {
+  const config = getConfiguredSource(source);
+  const requestedQuality = QUALITY_NAMES.includes(quality) ? quality : "hq";
+  return {
+    config,
+    requestedQuality,
+    params: {
+      [config.idParameter]: id,
+      [config.qualityParameter]: config.qualityValues[requestedQuality],
+      type: "json",
+    },
+  };
+};
+
+const extractUrl = (body) => {
+  const candidates = [
+    body?.url,
+    body?.data?.url,
+    body?.result?.url,
+    typeof body?.data === "string" ? body.data : undefined,
+    typeof body?.result === "string" ? body.result : undefined,
+  ];
+
+  const url = candidates.find((value) => typeof value === "string" && value.trim());
+  if (!url) return "";
+
+  const trimmed = url.trim();
+  return /^https?:\/\//i.test(trimmed) ? trimmed : "";
+};
+
+const normaliseExpiry = (value) => {
+  const number = typeof value === "number" ? value : Number(value);
+  if (!Number.isFinite(number) || number <= 0) return undefined;
+  const expiry = number < 1_000_000_000_000 ? number * 1000 : number;
+  return expiry > Date.now() ? expiry : undefined;
+};
+
+const extractExpiry = (body) => {
+  for (const container of [body, body?.data, body?.result]) {
+    if (!isRecord(container)) continue;
+    for (const key of ["expire", "expiresAt", "expires_at", "urlExpire"]) {
+      const expiry = normaliseExpiry(container[key]);
+      if (expiry) return expiry;
+    }
+  }
+  return undefined;
+};
+
+const resolveUrl = async ({ source, quality, musicInfo }) => {
+  const id = getMusicId(musicInfo);
+  const { config, requestedQuality, params } = buildTrackParams(source, id, quality);
+  const body = await requestJson(config.endpoint, params);
+  const url = extractUrl(body);
+
+  if (!url) {
+    const message = getBodyMessage(body);
+    throw pluginError(
+      "CHKSZ_NO_URL",
+      message ? `ChKSz 未返回播放地址：${message}` : "ChKSz 未返回播放地址。",
+    );
+  }
+
+  const result = { url, quality: requestedQuality };
+  const expire = extractExpiry(body);
+  if (expire) result.expire = expire;
+  return result;
+};
+
+const textFromValue = (value) => {
+  if (typeof value === "string") return value;
+  if (!isRecord(value)) return "";
+  for (const key of ["lyric", "text", "content"]) {
+    if (typeof value[key] === "string") return value[key];
+  }
+  return "";
+};
+
+const extractTextField = (body, names) => {
+  for (const container of [body, body?.data, body?.result]) {
+    if (!isRecord(container)) continue;
+    for (const name of names) {
+      const text = textFromValue(container[name]);
+      if (text) return text;
+    }
+  }
+  return "";
+};
+
+const requestTrackDetails = async (source, id) => {
+  const { config, params } = buildTrackParams(source, id, "lq");
+  return requestJson(config.endpoint, params);
+};
+
+const getLyric = async ({ source, musicInfo }) => {
+  const id = getMusicId(musicInfo);
+  const body =
+    source === "wy"
+      ? await requestJson("/api/163_lyric", { id })
+      : await requestTrackDetails(source, id);
+
+  return {
+    lyric: extractTextField(body, ["lyric", "lrc"]),
+    tlyric: extractTextField(body, ["tlyric", "tlrc", "translation"]),
+    rlyric: extractTextField(body, ["rlyric", "romalrc", "romanization"]),
+    awlyric: extractTextField(body, ["awlyric", "yrc", "qrc", "krc"]),
+  };
+};
+
+const getCover = async ({ source, musicInfo }) => {
+  const id = getMusicId(musicInfo);
+  const body =
+    source === "wy"
+      ? await requestJson("/api/163_music", { id, level: "standard", type: "json" })
+      : await requestTrackDetails(source, id);
+
+  const cover = extractTextField(body, ["cover", "coverUrl", "pic", "picUrl", "albumCover"]);
+  return { url: /^https?:\/\//i.test(cover) ? cover : "" };
+};
+
+splayer.register({
+  sources: Object.fromEntries(
+    Object.entries(SOURCE_CONFIG).map(([source, config]) => [
+      source,
+      {
+        name: config.name,
+        actions: ["musicUrl", "musicLyric", "musicPic"],
+        qualities: QUALITY_NAMES,
+      },
+    ]),
+  ),
+  settings: [
+    {
+      key: API_KEY_SETTING,
+      type: "text",
+      label: "ChKSz API Key",
+      description: "仅保存在 SPlayer 本机设置中；不要分享配置文件。",
+      default: "",
+      placeholder: "chksz_...",
+    },
+  ],
+});
+
+splayer.on("musicUrl", resolveUrl);
+splayer.on("musicLyric", getLyric);
+splayer.on("musicPic", getCover);