From d2ee59c16a4e35de1fc90f6e661132436a5fe5e3 Mon Sep 17 00:00:00 2001
From: dengmik-commits <270912164+dengmik-commits@users.noreply.github.com>
Date: Wed, 13 May 2026 15:08:26 +0800
Subject: [PATCH] fix: filter image_url content from API messages for DeepSeek
 compatibility

DeepSeek API does not support the image_url message content type,
causing 400 errors when messages contain images from clipboard paste
or Read tool. Filter out image_url parts before sending to the API.

Fixes #50
---
 src/session.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/session.ts b/src/session.ts
index a3d6a3e..3419457 100644
--- a/src/session.ts
+++ b/src/session.ts
@@ -1729,8 +1729,9 @@ ${skillMd}
       }
       const params = Array.isArray(message.contentParams) ? message.contentParams : [message.contentParams];
       for (const param of params) {
-        if (param && typeof param === "object") {
-          contentParts.push(param as ChatCompletionContentPart);
+        const part = param as ChatCompletionContentPart;
+        if (part && part.type !== "image_url") {
+          contentParts.push(part);
         }
       }
       const contentValue: string | ChatCompletionContentPart[] = contentParts.length > 0 ? contentParts : content;