diff --git a/packages/sdk/js/src/v2/gen/sdk.gen.ts b/packages/sdk/js/src/v2/gen/sdk.gen.ts
index b2989b68df..9beb809922 100644
--- a/packages/sdk/js/src/v2/gen/sdk.gen.ts
+++ b/packages/sdk/js/src/v2/gen/sdk.gen.ts
@@ -333,6 +333,8 @@ import type {
   V2QuestionRequestListResponses,
   V2ReferenceListErrors,
   V2ReferenceListResponses,
+  V2SessionActiveErrors,
+  V2SessionActiveResponses,
   V2SessionCompactErrors,
   V2SessionCompactResponses,
   V2SessionContextErrors,
@@ -5501,6 +5503,18 @@ export class Session3 extends HeyApiClient {
     })
   }
 
+  /**
+   * List active sessions
+   *
+   * Retrieve foreground Session drains currently owned by this OpenCode process. Sessions absent from the result are inactive.
+   */
+  public active<ThrowOnError extends boolean = false>(options?: Options<never, ThrowOnError>) {
+    return (options?.client ?? this.client).get<V2SessionActiveResponses, V2SessionActiveErrors, ThrowOnError>({
+      url: "/api/session/active",
+      ...options,
+    })
+  }
+
   /**
    * Get session
    *
diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index 9fde0f4e5e..ae610a3f12 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -2690,6 +2690,10 @@ export type InvalidCursorError = {
   message: string
 }
 
+export type SessionActive = {
+  type: "running"
+}
+
 export type SessionNotFoundError = {
   _tag: "SessionNotFoundError"
   sessionID: string
@@ -11940,6 +11944,39 @@ export type V2SessionCreateResponses = {
 
 export type V2SessionCreateResponse = V2SessionCreateResponses[keyof V2SessionCreateResponses]
 
+export type V2SessionActiveData = {
+  body?: never
+  path?: never
+  query?: never
+  url: "/api/session/active"
+}
+
+export type V2SessionActiveErrors = {
+  /**
+   * InvalidRequestError
+   */
+  400: InvalidRequestError
+  /**
+   * UnauthorizedError
+   */
+  401: UnauthorizedError
+}
+
+export type V2SessionActiveError = V2SessionActiveErrors[keyof V2SessionActiveErrors]
+
+export type V2SessionActiveResponses = {
+  /**
+   * Success
+   */
+  200: {
+    data: {
+      [key: string]: unknown | SessionActive
+    }
+  }
+}
+
+export type V2SessionActiveResponse = V2SessionActiveResponses[keyof V2SessionActiveResponses]
+
 export type V2SessionGetData = {
   body?: never
   path: {
diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
index 7377e63f9a..4e206d9114 100644
--- a/packages/sdk/openapi.json
+++ b/packages/sdk/openapi.json
@@ -10187,6 +10187,66 @@
         ]
       }
     },
+    "/api/session/active": {
+      "get": {
+        "tags": ["sessions"],
+        "operationId": "v2.session.active",
+        "parameters": [],
+        "security": [],
+        "responses": {
+          "200": {
+            "description": "Success",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "object",
+                  "properties": {
+                    "data": {
+                      "type": "object",
+                      "patternProperties": {
+                        "^ses": {
+                          "$ref": "#/components/schemas/SessionActive"
+                        }
+                      }
+                    }
+                  },
+                  "required": ["data"],
+                  "additionalProperties": false
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "InvalidRequestError",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/InvalidRequestError"
+                }
+              }
+            }
+          },
+          "401": {
+            "description": "UnauthorizedError",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/UnauthorizedError"
+                }
+              }
+            }
+          }
+        },
+        "description": "Retrieve foreground Session drains currently owned by this OpenCode process. Sessions absent from the result are inactive.",
+        "summary": "List active sessions",
+        "x-codeSamples": [
+          {
+            "lang": "js",
+            "source": "import { createOpencodeClient } from \"@opencode-ai/sdk\n\nconst client = createOpencodeClient()\nawait client.v2.session.active({\n  ...\n})"
+          }
+        ]
+      }
+    },
     "/api/session/{sessionID}": {
       "get": {
         "tags": ["sessions"],
@@ -23445,6 +23505,17 @@
         "required": ["_tag", "message"],
         "additionalProperties": false
       },
+      "SessionActive": {
+        "type": "object",
+        "properties": {
+          "type": {
+            "type": "string",
+            "enum": ["running"]
+          }
+        },
+        "required": ["type"],
+        "additionalProperties": false
+      },
       "SessionNotFoundError": {
         "type": "object",
         "properties": {