diff --git a/services/core/internal/api/errors.go b/services/core/internal/api/errors.go
index 3b4b6c0b2..af339ab6d 100644
--- a/services/core/internal/api/errors.go
+++ b/services/core/internal/api/errors.go
@@ -98,8 +98,13 @@ func writeOperationError(w http.ResponseWriter, r *http.Request, err error) {
 const invalidInputMessage = "Invalid resource identifier or request limits."
 
 // writeInternalError reports an unmapped failure. Driver errors can include
-// submitted values, so the raw error is never logged.
+// submitted values, so the raw error is never logged. Once the client has gone,
+// the failure is its ended request context: nothing is reported, and the request
+// log records the request as aborted.
 func writeInternalError(w http.ResponseWriter, r *http.Request) {
+	if r.Context().Err() != nil {
+		return
+	}
 	log.Ctx(r.Context()).Error("oac-core persistence operation failed")
 	writeError(w, http.StatusInternalServerError, "internal_error", "The operation could not be completed.")
 }
diff --git a/services/core/internal/api/errors_agents.go b/services/core/internal/api/errors_agents.go
index f8577c622..728c9e481 100644
--- a/services/core/internal/api/errors_agents.go
+++ b/services/core/internal/api/errors_agents.go
@@ -4,7 +4,6 @@ import (
 	"errors"
 	"net/http"
 
-	"github.com/MiniMax-AI/OpenAgentCore/internal/obs/log"
 	"github.com/MiniMax-AI/OpenAgentCore/services/core/internal/agents"
 )
 
@@ -19,7 +18,6 @@ func writeAgentsError(w http.ResponseWriter, r *http.Request, err error) {
 	case errors.Is(err, agents.ErrInvalidInput):
 		writeError(w, http.StatusBadRequest, "invalid_request", "Invalid resource identifier or request limits.")
 	default:
-		log.Ctx(r.Context()).Error("oac-core persistence operation failed")
-		writeError(w, http.StatusInternalServerError, "internal_error", "The operation could not be completed.")
+		writeInternalError(w, r)
 	}
 }
diff --git a/services/core/internal/api/errors_files.go b/services/core/internal/api/errors_files.go
index 0b8d1ab9b..f5de3795c 100644
--- a/services/core/internal/api/errors_files.go
+++ b/services/core/internal/api/errors_files.go
@@ -5,7 +5,6 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/MiniMax-AI/OpenAgentCore/internal/obs/log"
 	"github.com/MiniMax-AI/OpenAgentCore/services/core/internal/files"
 )
 
@@ -28,8 +27,6 @@ func writeFilesError(w http.ResponseWriter, r *http.Request, err error, notFound
 	case errors.Is(err, files.ErrInvalidInput):
 		writeError(w, http.StatusBadRequest, "invalid_request", "Invalid resource identifier or request limits.")
 	default:
-		// Storage failures can include submitted values; do not log the error.
-		log.Ctx(r.Context()).Error("oac-core persistence operation failed")
-		writeError(w, http.StatusInternalServerError, "internal_error", "The operation could not be completed.")
+		writeInternalError(w, r)
 	}
 }
diff --git a/services/core/internal/api/errors_test.go b/services/core/internal/api/errors_test.go
index 6295a799d..521a2d5f6 100644
--- a/services/core/internal/api/errors_test.go
+++ b/services/core/internal/api/errors_test.go
@@ -1,6 +1,7 @@
 package api
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -197,3 +198,14 @@ func TestSharedPersistenceErrors(t *testing.T) {
 		}
 	}
 }
+
+// A client that has gone gets no error report: its ended context is the failure.
+func TestInternalErrorAfterClientAbort(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	response := httptest.NewRecorder()
+	writeAgentsError(response, httptest.NewRequest(http.MethodGet, "/v1/agents", nil).WithContext(ctx), context.Canceled)
+	if response.Body.Len() != 0 {
+		t.Fatal(response.Body)
+	}
+}