diff --git a/.changeset/reusable-stream-subpath-export.md b/.changeset/reusable-stream-subpath-export.md
new file mode 100644
index 0000000..63b8751
--- /dev/null
+++ b/.changeset/reusable-stream-subpath-export.md
@@ -0,0 +1,5 @@
+---
+"@openrouter/agent": patch
+---
+
+Add a `./reusable-stream` subpath export so consumers can import `ReusableReadableStream` directly (`@openrouter/agent/reusable-stream`) instead of going through the root barrel or patching the package. Mirrors the existing `./tool-event-broadcaster` entry; both replay classes are the units consumers need when asserting stream-retention behavior against the published package.
diff --git a/packages/agent/package.json b/packages/agent/package.json
index cd1908e..4e8c7ef 100644
--- a/packages/agent/package.json
+++ b/packages/agent/package.json
@@ -88,6 +88,10 @@
       "types": "./esm/lib/tool-event-broadcaster.d.ts",
       "default": "./esm/lib/tool-event-broadcaster.js"
     },
+    "./reusable-stream": {
+      "types": "./esm/lib/reusable-stream.d.ts",
+      "default": "./esm/lib/reusable-stream.js"
+    },
     "./turn-context": {
       "types": "./esm/lib/turn-context.d.ts",
       "default": "./esm/lib/turn-context.js"