diff --git a/.changeset/fix-native-core-runtime.md b/.changeset/fix-native-core-runtime.md
new file mode 100644
index 00000000..bddf3527
--- /dev/null
+++ b/.changeset/fix-native-core-runtime.md
@@ -0,0 +1,6 @@
+---
+"@caplets/pi": patch
+"@caplets/opencode": patch
+---
+
+Load Caplets core through its declared package exports so the Pi and OpenCode integrations resolve platform-specific runtime dependencies correctly.
diff --git a/packages/opencode/rolldown.config.ts b/packages/opencode/rolldown.config.ts
index faf789aa..e17a722a 100644
--- a/packages/opencode/rolldown.config.ts
+++ b/packages/opencode/rolldown.config.ts
@@ -11,5 +11,10 @@ export default defineConfig({
   plugins: runtimeSentryPlugins("opencode"),
   platform: "node",
   tsconfig: true,
-  external: ["@opencode-ai/plugin", "jsonc-parser"],
+  external: [
+    "@caplets/core/generated-tool-input-schema",
+    "@caplets/core/native",
+    "@opencode-ai/plugin",
+    "jsonc-parser",
+  ],
 });
diff --git a/packages/pi/rolldown.config.ts b/packages/pi/rolldown.config.ts
index f49801f0..ab6082a3 100644
--- a/packages/pi/rolldown.config.ts
+++ b/packages/pi/rolldown.config.ts
@@ -11,5 +11,10 @@ export default defineConfig({
   plugins: runtimeSentryPlugins("pi"),
   platform: "node",
   tsconfig: true,
-  external: ["@earendil-works/pi-coding-agent", "jsonc-parser"],
+  external: [
+    "@caplets/core/generated-tool-input-schema",
+    "@caplets/core/native",
+    "@earendil-works/pi-coding-agent",
+    "jsonc-parser",
+  ],
 });