diff --git a/src/cli/cli.c b/src/cli/cli.c
index 05c9a560..965c3e47 100644
--- a/src/cli/cli.c
+++ b/src/cli/cli.c
@@ -900,13 +900,26 @@ cbm_detected_agents_t cbm_detect_agents(const char *home_dir) {
     }
 
     /* Zed: platform-specific config dir */
+    {
 #ifdef __APPLE__
-    snprintf(path, sizeof(path), "%s/Library/Application Support/Zed", home_dir);
+        const char *zed_base = cbm_app_config_dir();
+        if (zed_base) {
+            snprintf(path, sizeof(path), "%s/Library/Application Support/Zed", zed_base);
+        }
+#elif defined(_WIN32)
+        const char *zed_base = cbm_app_local_dir();
+        if (zed_base) {
+            snprintf(path, sizeof(path), "%s/Zed", zed_base);
+        }
 #else
-    snprintf(path, sizeof(path), "%s/.config/zed", home_dir);
+        const char *zed_base = cbm_app_config_dir();
+        if (zed_base) {
+            snprintf(path, sizeof(path), "%s/zed", zed_base);
+        }
 #endif
-    if (stat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
-        agents.zed = true;
+        if (zed_base && stat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+            agents.zed = true;
+        }
     }
 
     /* OpenCode: binary on PATH */
@@ -935,13 +948,18 @@ cbm_detected_agents_t cbm_detect_agents(const char *home_dir) {
     }
 
     /* VS Code: User config dir */
+    {
+        const char *app_cfg = cbm_app_config_dir();
+        if (app_cfg) {
 #ifdef __APPLE__
-    snprintf(path, sizeof(path), "%s/Library/Application Support/Code/User", home_dir);
+            snprintf(path, sizeof(path), "%s/Library/Application Support/Code/User", app_cfg);
 #else
-    snprintf(path, sizeof(path), "%s/.config/Code/User", home_dir);
+            snprintf(path, sizeof(path), "%s/Code/User", app_cfg);
 #endif
-    if (stat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
-        agents.vscode = true;
+            if (stat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+                agents.vscode = true;
+            }
+        }
     }
 
     /* OpenClaw: ~/.openclaw/ dir */
@@ -2510,9 +2528,11 @@ static void cbm_install_agent_configs(const char *home, const char *binary_path,
         char config_path[1024];
 #ifdef __APPLE__
         snprintf(config_path, sizeof(config_path),
-                 "%s/Library/Application Support/Zed/settings.json", home);
+                 "%s/Library/Application Support/Zed/settings.json", cbm_app_config_dir());
+#elif defined(_WIN32)
+        snprintf(config_path, sizeof(config_path), "%s/Zed/settings.json", cbm_app_local_dir());
 #else
-        snprintf(config_path, sizeof(config_path), "%s/.config/zed/settings.json", home);
+        snprintf(config_path, sizeof(config_path), "%s/zed/settings.json", cbm_app_config_dir());
 #endif
         if (!dry_run) {
             cbm_install_zed_mcp(binary_path, config_path);
@@ -2591,11 +2611,12 @@ static void cbm_install_agent_configs(const char *home, const char *binary_path,
     if (agents.vscode) {
         printf("VS Code:\n");
         char config_path[1024];
+        const char *vs_cfg = cbm_app_config_dir();
 #ifdef __APPLE__
         snprintf(config_path, sizeof(config_path),
-                 "%s/Library/Application Support/Code/User/mcp.json", home);
+                 "%s/Library/Application Support/Code/User/mcp.json", vs_cfg);
 #else
-        snprintf(config_path, sizeof(config_path), "%s/.config/Code/User/mcp.json", home);
+        snprintf(config_path, sizeof(config_path), "%s/Code/User/mcp.json", vs_cfg);
 #endif
         if (!dry_run) {
             cbm_install_vscode_mcp(binary_path, config_path);
@@ -2812,9 +2833,11 @@ int cbm_cmd_uninstall(int argc, char **argv) {
         char config_path[1024];
 #ifdef __APPLE__
         snprintf(config_path, sizeof(config_path),
-                 "%s/Library/Application Support/Zed/settings.json", home);
+                 "%s/Library/Application Support/Zed/settings.json", cbm_app_config_dir());
+#elif defined(_WIN32)
+        snprintf(config_path, sizeof(config_path), "%s/Zed/settings.json", cbm_app_local_dir());
 #else
-        snprintf(config_path, sizeof(config_path), "%s/.config/zed/settings.json", home);
+        snprintf(config_path, sizeof(config_path), "%s/zed/settings.json", cbm_app_config_dir());
 #endif
         if (!dry_run) {
             cbm_remove_zed_mcp(config_path);
@@ -2883,11 +2906,12 @@ int cbm_cmd_uninstall(int argc, char **argv) {
 
     if (agents.vscode) {
         char config_path[1024];
+        const char *vs_cfg = cbm_app_config_dir();
 #ifdef __APPLE__
         snprintf(config_path, sizeof(config_path),
-                 "%s/Library/Application Support/Code/User/mcp.json", home);
+                 "%s/Library/Application Support/Code/User/mcp.json", vs_cfg);
 #else
-        snprintf(config_path, sizeof(config_path), "%s/.config/Code/User/mcp.json", home);
+        snprintf(config_path, sizeof(config_path), "%s/Code/User/mcp.json", vs_cfg);
 #endif
         if (!dry_run) {
             cbm_remove_vscode_mcp(config_path);
diff --git a/src/foundation/platform.c b/src/foundation/platform.c
index fab2d3e7..cebcc6a0 100644
--- a/src/foundation/platform.c
+++ b/src/foundation/platform.c
@@ -108,6 +108,40 @@ char *cbm_normalize_path_sep(char *path) {
     return path;
 }
 
+const char *cbm_app_config_dir(void) {
+    static char buf[1024];
+    // NOLINTNEXTLINE(concurrency-mt-unsafe)
+    const char *d = getenv("APPDATA");
+    if (!d || !d[0]) {
+        const char *home = cbm_get_home_dir();
+        if (!home) {
+            return NULL;
+        }
+        snprintf(buf, sizeof(buf), "%s/AppData/Roaming", home);
+        return buf;
+    }
+    snprintf(buf, sizeof(buf), "%s", d);
+    cbm_normalize_path_sep(buf);
+    return buf;
+}
+
+const char *cbm_app_local_dir(void) {
+    static char buf[1024];
+    // NOLINTNEXTLINE(concurrency-mt-unsafe)
+    const char *d = getenv("LOCALAPPDATA");
+    if (!d || !d[0]) {
+        const char *home = cbm_get_home_dir();
+        if (!home) {
+            return NULL;
+        }
+        snprintf(buf, sizeof(buf), "%s/AppData/Local", home);
+        return buf;
+    }
+    snprintf(buf, sizeof(buf), "%s", d);
+    cbm_normalize_path_sep(buf);
+    return buf;
+}
+
 #else /* POSIX (macOS + Linux) */
 
 /* ── POSIX implementation ─────────────────────────────────────── */
@@ -261,3 +295,33 @@ const char *cbm_get_home_dir(void) {
     }
     return NULL;
 }
+
+#ifndef _WIN32
+const char *cbm_app_config_dir(void) {
+    static char buf[1024];
+#ifdef __APPLE__
+    /* macOS: callers prepend "Library/Application Support/..." */
+    return cbm_get_home_dir();
+#else
+    /* Linux: XDG_CONFIG_HOME or ~/.config */
+    // NOLINTNEXTLINE(concurrency-mt-unsafe)
+    const char *xdg = getenv("XDG_CONFIG_HOME");
+    if (xdg && xdg[0]) {
+        snprintf(buf, sizeof(buf), "%s", xdg);
+        return buf;
+    }
+    const char *home = cbm_get_home_dir();
+    if (!home) {
+        return NULL;
+    }
+    snprintf(buf, sizeof(buf), "%s/.config", home);
+    return buf;
+#endif
+}
+
+const char *cbm_app_local_dir(void) {
+    /* On POSIX there is no distinction between "roaming" and "local" app data.
+     * Delegate to cbm_app_config_dir() so callers compile on all platforms. */
+    return cbm_app_config_dir();
+}
+#endif /* _WIN32 */
diff --git a/src/foundation/platform.h b/src/foundation/platform.h
index 62e9dca8..9df4c1e8 100644
--- a/src/foundation/platform.h
+++ b/src/foundation/platform.h
@@ -70,6 +70,17 @@ int cbm_default_worker_count(bool initial);
  * Returns NULL when neither is set. */
 const char *cbm_get_home_dir(void);
 
+/* App data directories (cross-platform).
+ * Windows: APPDATA (Roaming) — e.g. C:/Users/.../AppData/Roaming
+ * macOS:   HOME (callers append "Library/Application Support/...")
+ * Linux:   XDG_CONFIG_HOME or ~/.config
+ * Returns NULL when the directory cannot be determined. */
+const char *cbm_app_config_dir(void);
+
+/* Windows: LOCALAPPDATA — e.g. C:/Users/.../AppData/Local
+ * macOS/Linux: same as cbm_app_config_dir(). */
+const char *cbm_app_local_dir(void);
+
 /* ── File system ───────────────────────────────────────────────── */
 
 /* Check if a path exists. */