feat: make Antigravity a first-class provider

cmd/capi/antigravity.go

@@ -98,6 +98,34 @@ func isAntigravityAccount(account OpenAIAccount) bool {
 	return isAntigravitySource(account.Source)
 }
 
+// isAntigravityChannel reports whether a channel is a first-class Antigravity
+// account pool (provider == "antigravity"), which routes through the Google
+// OAuth + Cloud Code path rather than the codex path.
+func isAntigravityChannel(channel Channel) bool {
+	return isAntigravitySource(channel.Provider)
+}
+
+// ensureAntigravityChannelLocked keeps an Antigravity channel's provider stable
+// and registers its model catalog. It mirrors ensureCodexChannelLocked but for
+// the Antigravity provider, so account import / periodic upkeep never rewrites
+// it to codex. Callers must hold s.mu.
+func (s *Server) ensureAntigravityChannelLocked(channel *Channel) bool {
+	if channel == nil {
+		return false
+	}
+	changed := false
+	if !strings.EqualFold(strings.TrimSpace(channel.Provider), "antigravity") {
+		channel.Provider = "antigravity"
+		changed = true
+	}
+	for _, modelID := range antigravityModelIDs() {
+		if s.ensureImportedModelLocked(modelID) {
+			changed = true
+		}
+	}
+	return changed
+}
+
 // checkAntigravityAccount validates an Antigravity account for the batch/health
 // check. It refreshes the Google token when needed and warms the project cache;
 // only a failed token refresh ejects the account, so a transient loadCodeAssist

cmd/capi/antigravity_test.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"strings"
 	"testing"
 
 	"github.com/gin-gonic/gin"
@@ -153,3 +154,28 @@ func TestParseDataURL(t *testing.T) {
 		t.Fatalf("non-base64 data URL should not parse")
 	}
 }
+
+func TestAntigravityChannelIsNotCodex(t *testing.T) {
+	// A first-class Antigravity pool must route through the antigravity path,
+	// never the codex path, even once it holds accounts.
+	channel := Channel{Provider: "antigravity", OpenAIAccounts: []OpenAIAccount{{ID: "a", AccessToken: "x", Source: "antigravity"}}}
+	if !isAntigravityChannel(channel) {
+		t.Fatalf("expected antigravity channel")
+	}
+	if isCodexChannel(channel) {
+		t.Fatalf("antigravity channel must not be treated as codex")
+	}
+	codex := Channel{Provider: "codex", OpenAIAccounts: []OpenAIAccount{{ID: "b", AccessToken: "x"}}}
+	if isAntigravityChannel(codex) || !isCodexChannel(codex) {
+		t.Fatalf("codex channel classification regressed")
+	}
+}
+
+func TestAntigravityClientSecretDecodes(t *testing.T) {
+	if antigravityOAuthClientSecret == "" {
+		t.Fatalf("client secret failed to decode")
+	}
+	if strings.ContainsAny(antigravityOAuthClientSecret, "\x00") {
+		t.Fatalf("client secret decoded to garbage")
+	}
+}

cmd/capi/main.go

@@ -3200,6 +3200,11 @@ func (s *Server) importOpenAIAccounts(c *gin.Context) {
 		}
 	}
 	for _, account := range accounts {
+		// Accounts imported into a first-class Antigravity pool are Antigravity
+		// accounts regardless of the file's declared source.
+		if isAntigravityChannel(*channel) && !isAntigravitySource(account.Source) {
+			account.Source = "antigravity"
+		}
 		if strings.TrimSpace(account.AccessToken) == "" && strings.TrimSpace(account.SessionToken) != "" {
 			account.AccessToken, account.ExpiresAt, _ = fetchChatGPTAccessTokenViaSessionCookie(account.SessionToken)
 		}
@@ -6934,6 +6939,9 @@ func chatCompletionUsageFromCodex(usage gin.H, messages []ChatMessage) gin.H {
 }
 
 func (s *Server) fetchUpstreamModelIDs(channel Channel, upstreamKey string) ([]string, error) {
+	if isAntigravityChannel(channel) {
+		return antigravityModelIDs(), nil
+	}
 	if isCodexChannel(channel) {
 		return codexChannelModelIDs(), nil
 	}
@@ -7934,6 +7942,9 @@ func (s *Server) shouldUseCompatibleProvider(channel Channel) bool {
 	if strings.EqualFold(s.providerMode, "compatible") {
 		return true
 	}
+	if isAntigravityChannel(channel) && len(channel.OpenAIAccounts) > 0 {
+		return true
+	}
 	if isCodexChannel(channel) && len(channel.OpenAIAccounts) > 0 {
 		return true
 	}
@@ -9177,13 +9188,20 @@ func codexChannelModelIDs() []string {
 }
 
 func isCodexChannel(channel Channel) bool {
+	if isAntigravityChannel(channel) {
+		return false
+	}
 	return strings.EqualFold(strings.TrimSpace(channel.Provider), "codex") || len(channel.OpenAIAccounts) > 0
 }
 
 func (s *Server) ensureCodexChannelLocked(channel *Channel) bool {
 	if channel == nil {
 		return false
 	}
+	// An Antigravity account pool is its own provider; never rewrite it to codex.
+	if isAntigravityChannel(*channel) {
+		return s.ensureAntigravityChannelLocked(channel)
+	}
 	changed := false
 	if !strings.EqualFold(strings.TrimSpace(channel.Provider), "codex") {
 		channel.Provider = "codex"
@@ -9268,6 +9286,8 @@ func providerLabel(provider string) string {
 	switch strings.ToLower(strings.TrimSpace(provider)) {
 	case "codex":
 		return "Codex"
+	case "antigravity", "agy", "google-antigravity":
+		return "Antigravity"
 	case "cpa", "cliproxyapi", "cli-proxy-api":
 		return "CLIProxyAPI"
 	case "openai":
@@ -10572,7 +10592,11 @@ func (s *Server) normalizeStateCollections() bool {
 			s.state.Channels[i].Models = []string{}
 			changed = true
 		}
-		if isCodexChannel(s.state.Channels[i]) {
+		if isAntigravityChannel(s.state.Channels[i]) {
+			if s.ensureAntigravityChannelLocked(&s.state.Channels[i]) {
+				changed = true
+			}
+		} else if isCodexChannel(s.state.Channels[i]) {
 			if s.ensureCodexChannelLocked(&s.state.Channels[i]) {
 				changed = true
 			}

dist/index.html

@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <title>CAPI</title>
-    <script type="module" crossorigin src="/assets/index-B2BgeCFL.js"></script>
+    <script type="module" crossorigin src="/assets/index-B9-tgVyd.js"></script>
     <link rel="stylesheet" crossorigin href="/assets/index-699x73P2.css">
   </head>
   <body>

src/App.tsx

@@ -446,6 +446,7 @@ const navItems = [
 const providerOptions = [
   { value: "kiro", label: "Kiro / Amazon Q" },
   { value: "codex", label: "Codex / ChatGPT OAuth" },
+  { value: "antigravity", label: "Antigravity / Google" },
   { value: "cpa", label: "CPA / CLIProxyAPI" },
   { value: "openai", label: "OpenAI" },
   { value: "anthropic", label: "Anthropic / Claude" },
@@ -466,6 +467,8 @@ const defaultCodexModels = "gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna, gpt-5.5, g
 const defaultOpenAIModels = "gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna, gpt-5.5, gpt-5.4, gpt-image-2";
 const defaultCPAModels = "gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna, gpt-5.5, gpt-5.4, claude-sonnet-4, gemini-3.1-pro";
 const defaultKiroModels = "claude-sonnet-4.5, claude-sonnet-4, claude-haiku-4.5, claude-opus-4.5";
+const defaultAntigravityBaseURL = "https://daily-cloudcode-pa.googleapis.com";
+const defaultAntigravityModels = "claude-opus-4-6-thinking, claude-sonnet-4-6, gemini-3.8-flash-high, gemini-3.7-flash-high, gemini-3.6-flash-high, gemini-3-flash, gemini-pro-agent, gemini-3.1-pro-low, gpt-oss-120b-medium, gemini-3.1-flash-lite, gemini-3.5-flash-lite, gemini-3.1-flash-image";
 
 const channelTemplates = [
   {
@@ -489,6 +492,13 @@ const channelTemplates = [
     baseUrl: defaultCodexBaseURL,
     models: defaultCodexModels.split(",").map((model) => model.trim())
   },
+  {
+    provider: "antigravity",
+    label: "Antigravity 账号池",
+    name: "Antigravity 账号池",
+    baseUrl: defaultAntigravityBaseURL,
+    models: defaultAntigravityModels.split(",").map((model) => model.trim())
+  },
   {
     provider: "cpa",
     label: "CPA / CLIProxyAPI",
@@ -563,6 +573,7 @@ function accountErrorLabel(code?: string) {
 function defaultBaseURLForProvider(provider: string) {
   if (provider === "openai") return defaultOpenAIBaseURL;
   if (provider === "codex") return defaultCodexBaseURL;
+  if (provider === "antigravity") return defaultAntigravityBaseURL;
   if (provider === "cpa" || provider === "cliproxyapi") return defaultCPABaseURL;
   if (provider === "kiro") return defaultKiroBaseURL;
   return "";
@@ -733,6 +744,7 @@ function ProviderIcon({ provider }: { provider: string }) {
     );
   }
   const mark = provider === "codex" ? "C"
+    : provider === "antigravity" ? "G"
     : provider === "cpa" || provider === "cliproxyapi" ? "CPA"
     : provider === "anthropic" ? "A"
         : provider === "google" ? "✦"
@@ -3054,7 +3066,7 @@ function DrawingView({
   onStartOAuth: (channelId: string) => Promise<{ authorizeUrl: string; state: string; redirectUri: string }>;
   onCompleteOAuth: (channelId: string, payload: { callbackUrl?: string; code?: string; state?: string }) => Promise<unknown>;
 }) {
-  const drawingChannels = channels.filter((channel) => channel.provider === "codex" || channel.provider === "openai" || arrayOf(channel.models).some((model) => model.includes("image")));
+  const drawingChannels = channels.filter((channel) => channel.provider === "codex" || channel.provider === "antigravity" || channel.provider === "openai" || arrayOf(channel.models).some((model) => model.includes("image")));
   const [busy, setBusy] = useState("");
   const [accountVisibleCounts, setAccountVisibleCounts] = useState<Record<string, number>>({});
   const [accountFilters, setAccountFilters] = useState<Record<string, "all" | "attention" | "invalid" | "error" | "refreshable">>({});
@@ -3151,6 +3163,7 @@ function DrawingView({
         <div className="panel-toolbar">
           <span className="muted-inline">账号有两种来源，任选其一即可。</span>
           <button className="primary-button" onClick={() => onCreate(channelCreateFromTemplate("codex"))}>新增账号池渠道</button>
+          <button className="secondary-button" onClick={() => onCreate(channelCreateFromTemplate("antigravity"))}>新增 Antigravity 账号池</button>
         </div>
         <div className="source-guide">
           <div className="source-guide-item">