From 8f456ea73b549dac36fdc1d9c88e5df3cc0847b0 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Wed, 10 Dec 2025 15:52:39 +0000
Subject: [PATCH] fix(agent): send structured prompt to tau rpc

---
 src/process/tau-rpc.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/process/tau-rpc.ts b/src/process/tau-rpc.ts
index 577950b0e..22c37f033 100644
--- a/src/process/tau-rpc.ts
+++ b/src/process/tau-rpc.ts
@@ -221,8 +221,11 @@ class TauRpcClient {
       const ok = child.stdin.write(
         `${JSON.stringify({
           type: "prompt",
-          // RPC v0.17+ accepts raw string prompts and normalizes internally.
-          message: prompt,
+          // Send structured content to match tau RPC expectations and avoid
+          // empty-text bugs on older builds.
+          message: {
+            content: [{ type: "text", text: prompt }],
+          },
         })}\n`,
         (err) => (err ? reject(err) : resolve()),
       );