Merge pull request #6252 from ggbdpq/fix/xai-grok-client-version-bump

fix(xai): bump pinned grok client version to 1.0.44 for chat-proxy

internal/runtime/executor/xai_client_version_test.go

@@ -0,0 +1,76 @@
+package executor
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+	"testing"
+
+	cliproxyauth "github.com/router-for-me/CLIProxyAPI/v8/sdk/cliproxy/auth"
+)
+
+// xaiVersionAtLeast compares dotted numeric version strings.
+func xaiVersionAtLeast(got, floor string) bool {
+	gotParts := strings.Split(got, ".")
+	floorParts := strings.Split(floor, ".")
+	for i := 0; i < len(gotParts) || i < len(floorParts); i++ {
+		var g, f int
+		if i < len(gotParts) {
+			g, _ = strconv.Atoi(gotParts[i])
+		}
+		if i < len(floorParts) {
+			f, _ = strconv.Atoi(floorParts[i])
+		}
+		if g != f {
+			return g > f
+		}
+	}
+	return true
+}
+
+func TestXAIChatProxyClientVersionMeetsServerFloor(t *testing.T) {
+	// cli-chat-proxy.grok.com started rejecting client versions older than
+	// 1.0.13 with HTTP 426 ("Your Grok CLI version is outdated"); see #6249.
+	const serverFloor = "1.0.13"
+	if !xaiVersionAtLeast(xaiClientVersionValue, serverFloor) {
+		t.Fatalf("xaiClientVersionValue = %q, cli-chat-proxy rejects clients older than %s with 426", xaiClientVersionValue, serverFloor)
+	}
+}
+
+func TestXAIChatProxyIdentityHeadersDeriveFromOneConstant(t *testing.T) {
+	auth := &cliproxyauth.Auth{
+		Provider:   "xai",
+		Attributes: map[string]string{"auth_kind": "oauth"},
+	}
+	req, err := http.NewRequest(http.MethodPost, xaiChatBaseURL(auth)+"/chat/completions", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	applyXAIChatHeaders(req, auth, "token", false, "")
+
+	if got := req.Header.Get(xaiClientVersionHeader); got != xaiClientVersionValue {
+		t.Fatalf("%s = %q, want %q", xaiClientVersionHeader, got, xaiClientVersionValue)
+	}
+	if got, want := req.Header.Get("User-Agent"), "xai-grok-workspace/"+xaiClientVersionValue; got != want {
+		t.Fatalf("User-Agent = %q, want %q (must derive from xaiClientVersionValue)", got, want)
+	}
+}
+
+func TestXAIChatProxyCustomHeadersOverridePinnedVersion(t *testing.T) {
+	auth := &cliproxyauth.Auth{
+		Provider: "xai",
+		Attributes: map[string]string{
+			"auth_kind":                    "oauth",
+			"header:x-grok-client-version": "9.9.9",
+		},
+	}
+	req, err := http.NewRequest(http.MethodPost, xaiChatBaseURL(auth)+"/chat/completions", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	applyXAIChatHeaders(req, auth, "token", false, "")
+
+	if got := req.Header.Get(xaiClientVersionHeader); got != "9.9.9" {
+		t.Fatalf("%s = %q, want the per-auth custom header to override the pin", xaiClientVersionHeader, got)
+	}
+}

internal/runtime/executor/xai_executor.go

@@ -48,8 +48,10 @@ const (
 	xaiTokenAuthHeader          = "X-XAI-Token-Auth"
 	xaiTokenAuthValue           = "xai-grok-cli"
 	xaiClientVersionHeader      = "x-grok-client-version"
-	// Keep in sync with the current Grok CLI client version that chat-proxy expects.
-	xaiClientVersionValue         = "0.2.120"
+	// Keep in sync with the current Grok CLI client version that chat-proxy
+	// expects. The server rejects older versions with HTTP 426; it required
+	// 1.0.13+ as of 2026-10-01 (#6249).
+	xaiClientVersionValue         = "1.0.44"
 	xaiClientIdentifierHeader     = "x-grok-client-identifier"
 	xaiClientIdentifierValue      = "grok-shell"
 	xaiAuthenticateResponseHeader = "x-authenticateresponse"