From: Anderson A. Giacomolli <agiacomolli@gmail.com>
Date: Fri, 6 Nov 2026 18:33:04 +0000 (-0300)
Subject: Leave the turn state out of the usage records
X-Git-Url: http://git.giacomolli.uk/onechat/commitdiff_plain/6f7eda727e519ae43d7d35195cbe412a2725abd7

Leave the turn state out of the usage records

The ChatGPT backend sends x-codex-turn-state on each response: an opaque
state of the backend of about 1 KB, not quota. The usage records keep
every other x-codex-* header, so each line holds the plan and the
windows without the noise.

Issue: b14d537
---

diff --git a/responses.go b/responses.go
index ebffaa3..cdc1558 100644
--- a/responses.go
+++ b/responses.go
@@ -27,6 +27,10 @@ const (
 	// backend, in canonical form.
 	quotaPrefix = "X-Codex-"
 
+	// turnStateHeader is an x-codex-* header that holds an opaque state of
+	// the backend, not quota.
+	turnStateHeader = "X-Codex-Turn-State"
+
 	// errorBytes is the most bytes of an error response that go into the
 	// error.
 	errorBytes = 4096
@@ -262,7 +266,8 @@ type usageLog struct {
 }
 
 // usageRecord is one line of usage.jsonl. Status is the HTTP status, or 0 when
-// no response came. Quota holds the x-codex-* headers of the response.
+// no response came. Quota holds the x-codex-* headers of the response, without
+// the turn state.
 type usageRecord struct {
 	Date         string            `json:"date"`
 	Model        string            `json:"model"`
@@ -331,11 +336,12 @@ func userMessage(texts ...string) any {
 	}
 }
 
-// quotaHeaders returns the x-codex-* headers, with lowercase names.
+// quotaHeaders returns the x-codex-* headers, with lowercase names, without the
+// turn state.
 func quotaHeaders(header http.Header) map[string]string {
 	var quota map[string]string
 	for name, values := range header {
-		if !strings.HasPrefix(name, quotaPrefix) || len(values) == 0 {
+		if !strings.HasPrefix(name, quotaPrefix) || name == turnStateHeader || len(values) == 0 {
 			continue
 		}
 
diff --git a/responses_test.go b/responses_test.go
index c1a7b4d..577e611 100644
--- a/responses_test.go
+++ b/responses_test.go
@@ -102,6 +102,7 @@ func TestClientRecordsEachCall(t *testing.T) {
 		w.Header().Set("X-Codex-Primary-Used-Percent", "12")
 		w.Header().Set("X-Codex-Plan-Type", "plus")
 		w.Header().Set("X-Other", "not quota")
+		w.Header().Set("X-Codex-Turn-State", "opaque state")
 		if call.number == 1 {
 			w.WriteHeader(http.StatusTooManyRequests)
 			_, _ = io.WriteString(w, `{"detail": "slow down"}`)