From b20cc15c2cbf6b2fdbf5322eb719544d9d2a2fae Mon Sep 17 00:00:00 2001
From: Link Dupont <link@sub-pop.net>
Date: Thu, 26 Mar 2026 21:31:00 -0400
Subject: [PATCH] fix: Decode parts if present in Gemini responses

---
 Sources/AgentRunKit/LLM/GeminiClientTypes.swift | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Sources/AgentRunKit/LLM/GeminiClientTypes.swift b/Sources/AgentRunKit/LLM/GeminiClientTypes.swift
index ede47b1..19ce2d8 100644
--- a/Sources/AgentRunKit/LLM/GeminiClientTypes.swift
+++ b/Sources/AgentRunKit/LLM/GeminiClientTypes.swift
@@ -47,7 +47,20 @@ struct GeminiRequest: Encodable {
 
 struct GeminiContent: Codable {
     let role: String?
+    /// Optional during decoding — Gemini may omit `parts` for blocked or empty responses.
+    /// Defaults to `[]` when absent. Always populated for outgoing requests.
     let parts: [GeminiPart]
+
+    init(role: String?, parts: [GeminiPart]) {
+        self.role = role
+        self.parts = parts
+    }
+
+    init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        role = try container.decodeIfPresent(String.self, forKey: .role)
+        parts = try container.decodeIfPresent([GeminiPart].self, forKey: .parts) ?? []
+    }
 }
 
 struct GeminiPart: Codable {