diff --git a/handlers/anthropic.go b/handlers/anthropic.go
index 3e0876c..b6863f1 100644
--- a/handlers/anthropic.go
+++ b/handlers/anthropic.go
@@ -174,8 +174,8 @@ func AnthropicHandler(cfg *config.Config, db *gorm.DB) fiber.Handler {
 		}
 
 		if err != nil {
-			logger.Warn("│  ❌ UPSTREAM ERROR: %v", err)
-			logger.Warn("└─ [ANTHROPIC] <<< 502 (%dms)", latency)
+			logger.Warn("│  ❌ UPSTREAM ERROR [IP: %s]: %v", c.IP(), err)
+			logger.Warn("└─ [ANTHROPIC] <<< 502 (%dms) | IP: %s", latency, c.IP())
 			return c.Status(fiber.StatusBadGateway).JSON(fiber.Map{
 				"error": fmt.Sprintf("upstream error: %v", err),
 			})
@@ -197,7 +197,7 @@ func AnthropicHandler(cfg *config.Config, db *gorm.DB) fiber.Handler {
 				c.Set("Content-Type", "application/json")
 				return c.Status(result.StatusCode).Send(antBody)
 			}
-			logger.Warn("│  ⚠️  RESPONSE TRANSFORM FAILED: %v (forwarding raw)", terr)
+			logger.Warn("│  ⚠️  RESPONSE TRANSFORM FAILED [IP: %s]: %v (forwarding raw)", c.IP(), terr)
 		}
 
 		logger.Info("└─ [ANTHROPIC] <<< %d (passthrough, %dms)", result.StatusCode, latency)
@@ -287,14 +287,14 @@ func handleStreaming(
 	client := &http.Client{}
 	resp, err := client.Do(req)
 	if err != nil {
-		logger.Warn("[ANTHROPIC] Stream error: %v", err)
+		logger.Warn("[ANTHROPIC] Stream error [IP: %s]: %v", c.IP(), err)
 		return c.Status(fiber.StatusBadGateway).SendString("upstream error")
 	}
 	defer resp.Body.Close()
 
 	if resp.StatusCode != 200 {
 		body, _ := io.ReadAll(resp.Body)
-		logger.Warn("[ANTHROPIC] Stream upstream %d: %s", resp.StatusCode, string(body))
+		logger.Warn("[ANTHROPIC] Stream upstream %d [IP: %s]: %s", resp.StatusCode, c.IP(), string(body))
 		return c.Status(resp.StatusCode).Send(body)
 	}
 
diff --git a/handlers/openai.go b/handlers/openai.go
index 2fd9dea..3f2dfec 100644
--- a/handlers/openai.go
+++ b/handlers/openai.go
@@ -86,8 +86,8 @@ func OpenAIHandler(cfg *config.Config, db *gorm.DB) fiber.Handler {
 		}
 
 		if err != nil {
-			logger.Warn("│  ❌ UPSTREAM ERROR: %v", err)
-			logger.Warn("└─ [OPENAI] <<< 502 (%dms)", latency)
+			logger.Warn("│  ❌ UPSTREAM ERROR [IP: %s]: %v", c.IP(), err)
+			logger.Warn("└─ [OPENAI] <<< 502 (%dms) | IP: %s", latency, c.IP())
 			return c.Status(fiber.StatusBadGateway).JSON(fiber.Map{
 				"error": fmt.Sprintf("upstream error: %v", err),
 			})