feat: add Gemini API key onboarding

src/commands/auth-choice-options.ts

@@ -85,6 +85,7 @@ export function buildAuthChoiceOptions(params: {
     value: "antigravity",
     label: "Google Antigravity (Claude Opus 4.5, Gemini 3, etc.)",
   });
+  options.push({ value: "gemini-api-key", label: "Google Gemini API key" });
   options.push({ value: "apiKey", label: "Anthropic API key" });
   options.push({ value: "minimax", label: "Minimax M2.1 (LM Studio)" });
   if (params.includeSkip) {

src/commands/auth-choice.ts

@@ -30,6 +30,7 @@ import {
   applyMinimaxConfig,
   applyMinimaxProviderConfig,
   setAnthropicApiKey,
+  setGeminiApiKey,
   writeOAuthCredentials,
 } from "./onboard-auth.js";
 import { openUrl } from "./onboard-helpers.js";
@@ -415,6 +416,17 @@ export async function applyAuthChoice(params: {
         "OAuth help",
       );
     }
+  } else if (params.authChoice === "gemini-api-key") {
+    const key = await params.prompter.text({
+      message: "Enter Gemini API key",
+      validate: (value) => (value?.trim() ? undefined : "Required"),
+    });
+    await setGeminiApiKey(String(key).trim(), params.agentDir);
+    nextConfig = applyAuthProfileConfig(nextConfig, {
+      profileId: "google:default",
+      provider: "google",
+      mode: "api_key",
+    });
   } else if (params.authChoice === "apiKey") {
     const key = await params.prompter.text({
       message: "Enter Anthropic API key",

src/commands/configure.ts

@@ -55,6 +55,7 @@ import {
   applyAuthProfileConfig,
   applyMinimaxConfig,
   setAnthropicApiKey,
+  setGeminiApiKey,
   writeOAuthCredentials,
 } from "./onboard-auth.js";
 import {
@@ -300,6 +301,7 @@ async function promptAuthConfig(
     | "openai-codex"
     | "codex-cli"
     | "antigravity"
+    | "gemini-api-key"
     | "apiKey"
     | "minimax"
     | "skip";
@@ -513,6 +515,20 @@ async function promptAuthConfig(
       runtime.error(String(err));
       note("Trouble with OAuth? See https://docs.clawd.bot/start/faq", "OAuth");
     }
+  } else if (authChoice === "gemini-api-key") {
+    const key = guardCancel(
+      await text({
+        message: "Enter Gemini API key",
+        validate: (value) => (value?.trim() ? undefined : "Required"),
+      }),
+      runtime,
+    );
+    await setGeminiApiKey(String(key).trim());
+    next = applyAuthProfileConfig(next, {
+      profileId: "google:default",
+      provider: "google",
+      mode: "api_key",
+    });
   } else if (authChoice === "apiKey") {
     const key = guardCancel(
       await text({

src/commands/onboard-auth.ts

@@ -33,6 +33,19 @@ export async function setAnthropicApiKey(key: string, agentDir?: string) {
   });
 }
 
+export async function setGeminiApiKey(key: string, agentDir?: string) {
+  // Write to the multi-agent path so gateway finds credentials on startup
+  upsertAuthProfile({
+    profileId: "google:default",
+    credential: {
+      type: "api_key",
+      provider: "google",
+      key,
+    },
+    agentDir: agentDir ?? resolveDefaultAgentDir(),
+  });
+}
+
 export function applyAuthProfileConfig(
   cfg: ClawdbotConfig,
   params: {

src/commands/onboard-non-interactive.ts

@@ -28,6 +28,7 @@ import {
   applyAuthProfileConfig,
   applyMinimaxConfig,
   setAnthropicApiKey,
+  setGeminiApiKey,
 } from "./onboard-auth.js";
 import {
   applyWizardMetadata,
@@ -119,6 +120,19 @@ export async function runNonInteractiveOnboarding(
       provider: "anthropic",
       mode: "api_key",
     });
+  } else if (authChoice === "gemini-api-key") {
+    const key = opts.geminiApiKey?.trim();
+    if (!key) {
+      runtime.error("Missing --gemini-api-key");
+      runtime.exit(1);
+      return;
+    }
+    await setGeminiApiKey(key);
+    nextConfig = applyAuthProfileConfig(nextConfig, {
+      profileId: "google:default",
+      provider: "google",
+      mode: "api_key",
+    });
   } else if (authChoice === "claude-cli") {
     const store = ensureAuthProfileStore(undefined, {
       allowKeychainPrompt: false,

src/commands/onboard-types.ts

@@ -9,6 +9,7 @@ export type AuthChoice =
   | "codex-cli"
   | "antigravity"
   | "apiKey"
+  | "gemini-api-key"
   | "minimax"
   | "skip";
 export type GatewayAuthChoice = "off" | "token" | "password";
@@ -24,6 +25,7 @@ export type OnboardOptions = {
   nonInteractive?: boolean;
   authChoice?: AuthChoice;
   anthropicApiKey?: string;
+  geminiApiKey?: string;
   gatewayPort?: number;
   gatewayBind?: GatewayBind;
   gatewayAuth?: GatewayAuthChoice;