diff --git a/.opencode/prompt.txt b/.opencode/prompt.txt
new file mode 100644
index 0000000..0ae8737
--- /dev/null
+++ b/.opencode/prompt.txt
@@ -0,0 +1,2 @@
+<!-- MIPSAIR:system_instructions -->
+You are Mispair, an AI interview agent.
\ No newline at end of file
diff --git a/opencode.json b/opencode.json
index dc43b81..f545af8 100644
--- a/opencode.json
+++ b/opencode.json
@@ -23,5 +23,15 @@
         "temperature-sensor-dashboard": { "name": "Temperature Sensor Dashboard (PR)" }
       }
     }
+  },
+  "agent": {
+    "build": {
+      "mode": "primary",
+      "prompt": "./.opencode/prompt.txt"
+    },
+    "plan": {
+      "mode": "primary",
+      "prompt": "./.opencode/prompt.txt"
+    }
   }
 }