feat(cliproxy): add Claude (Anthropic) OAuth provider support

Add Claude as a first-class OAuth provider in CCS CLI and dashboard.
Backend support already exists in CLIProxyAPIPlus (port 54545).

Changes:
- Add 'claude' to CLIProxyProvider type and profile detector
- Add Claude OAuth config (port 54545, --anthropic-login flag)
- Add Claude to oauth-port-diagnostics flow types
- Add Claude token discovery prefixes (claude-, anthropic-)
- Add Claude model catalog (Opus 4.5, Sonnet 4.5/4, Haiku 4.5)
- Add Claude logo and provider display name
- Update variant config types and adapters

Closes #380

src/auth/profile-detector.ts

@@ -28,6 +28,7 @@ export const CLIPROXY_PROFILES = [
   'iflow',
   'kiro',
   'ghcp',
+  'claude',
 ] as const;
 export type CLIProxyProfileName = (typeof CLIPROXY_PROFILES)[number];
 

src/cliproxy/auth/auth-types.ts

@@ -27,6 +27,7 @@ export const OAUTH_CALLBACK_PORTS: Partial<Record<CLIProxyProvider, number>> = {
   codex: 1455,
   agy: 51121,
   iflow: 11451,
+  claude: 54545,
   // qwen: Device Code Flow - no callback port
   // ghcp: Device Code Flow - no callback port
 };
@@ -121,6 +122,13 @@ export const OAUTH_CONFIGS: Record<CLIProxyProvider, ProviderOAuthConfig> = {
     scopes: ['copilot'],
     authFlag: '--github-copilot-login',
   },
+  claude: {
+    provider: 'claude',
+    displayName: 'Claude (Anthropic)',
+    authUrl: 'https://console.anthropic.com/oauth/authorize',
+    scopes: ['user:inference', 'user:profile'],
+    authFlag: '--anthropic-login',
+  },
 };
 
 /**
@@ -136,6 +144,7 @@ export const PROVIDER_AUTH_PREFIXES: Record<CLIProxyProvider, string[]> = {
   iflow: ['iflow-'],
   kiro: ['kiro-', 'aws-', 'codewhisperer-'],
   ghcp: ['github-copilot-', 'copilot-', 'gh-'],
+  claude: ['claude-', 'anthropic-'],
 };
 
 /**
@@ -150,6 +159,7 @@ export const PROVIDER_TYPE_VALUES: Record<CLIProxyProvider, string[]> = {
   iflow: ['iflow'],
   kiro: ['kiro', 'codewhisperer'],
   ghcp: ['github-copilot', 'copilot'],
+  claude: ['claude', 'anthropic'],
 };
 
 /**

src/cliproxy/config-generator.ts

@@ -299,6 +299,7 @@ const PROVIDER_DISPLAY_NAMES: Record<CLIProxyProvider, string> = {
   iflow: 'iFlow',
   kiro: 'Kiro (AWS)',
   ghcp: 'GitHub Copilot (OAuth)',
+  claude: 'Claude (Anthropic)',
 };
 
 /**

src/cliproxy/model-catalog.ts

@@ -166,6 +166,55 @@ export const MODEL_CATALOG: Partial<Record<CLIProxyProvider, ProviderCatalog>> =
       },
     ],
   },
+  claude: {
+    provider: 'claude',
+    displayName: 'Claude (Anthropic)',
+    defaultModel: 'claude-sonnet-4-5-20250514',
+    models: [
+      {
+        id: 'claude-opus-4-5-20250220',
+        name: 'Claude Opus 4.5',
+        description: 'Most capable Claude model',
+        thinking: {
+          type: 'budget',
+          min: 1024,
+          max: 128000,
+          zeroAllowed: false,
+          dynamicAllowed: true,
+        },
+      },
+      {
+        id: 'claude-sonnet-4-5-20250514',
+        name: 'Claude Sonnet 4.5',
+        description: 'Balanced performance and speed',
+        thinking: {
+          type: 'budget',
+          min: 1024,
+          max: 128000,
+          zeroAllowed: false,
+          dynamicAllowed: true,
+        },
+      },
+      {
+        id: 'claude-sonnet-4-20250514',
+        name: 'Claude Sonnet 4',
+        description: 'Previous generation Sonnet',
+        thinking: {
+          type: 'budget',
+          min: 1024,
+          max: 128000,
+          zeroAllowed: false,
+          dynamicAllowed: true,
+        },
+      },
+      {
+        id: 'claude-haiku-4-5-20250514',
+        name: 'Claude Haiku 4.5',
+        description: 'Fast and efficient',
+        thinking: { type: 'none' },
+      },
+    ],
+  },
 };
 
 /**

src/cliproxy/services/variant-config-adapter.ts

@@ -132,7 +132,7 @@ export function saveVariantUnified(
   if (!config.cliproxy) {
     config.cliproxy = {
       oauth_accounts: {},
-      providers: ['gemini', 'codex', 'agy', 'qwen', 'iflow', 'kiro', 'ghcp'],
+      providers: ['gemini', 'codex', 'agy', 'qwen', 'iflow', 'kiro', 'ghcp', 'claude'],
       variants: {},
     };
   }

src/cliproxy/types.ts

@@ -118,8 +118,17 @@ export interface DownloadResult {
  * - iflow: iFlow via OAuth
  * - kiro: Kiro (AWS CodeWhisperer) via OAuth
  * - ghcp: GitHub Copilot via Device Code (OAuth through CLIProxyAPIPlus)
+ * - claude: Claude (Anthropic) via OAuth
  */
-export type CLIProxyProvider = 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp';
+export type CLIProxyProvider =
+  | 'gemini'
+  | 'codex'
+  | 'agy'
+  | 'qwen'
+  | 'iflow'
+  | 'kiro'
+  | 'ghcp'
+  | 'claude';
 
 /**
  * CLIProxy backend selection

src/config/unified-config-types.ts

@@ -61,7 +61,7 @@ export type OAuthAccounts = Record<string, string>;
  */
 export interface CLIProxyVariantConfig {
   /** Base provider to use */
-  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp';
+  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp' | 'claude';
   /** Account nickname (references oauth_accounts) */
   account?: string;
   /** Path to settings file (e.g., "~/.ccs/gemini-custom.settings.json") */

src/management/oauth-port-diagnostics.ts

@@ -34,6 +34,7 @@ export const OAUTH_CALLBACK_PORTS: Record<CLIProxyProvider, number | null> = {
   iflow: 11451, // Authorization Code Flow
   kiro: 9876, // Authorization Code Flow
   ghcp: null, // Device Code Flow - no callback port
+  claude: 54545, // Authorization Code Flow (Anthropic OAuth)
 };
 
 /**
@@ -52,6 +53,7 @@ export const OAUTH_FLOW_TYPES: Record<CLIProxyProvider, OAuthFlowType> = {
   iflow: 'authorization_code',
   kiro: 'authorization_code',
   ghcp: 'device_code',
+  claude: 'authorization_code',
 };
 
 /**
@@ -138,7 +140,16 @@ export async function checkOAuthPort(provider: CLIProxyProvider): Promise<OAuthP
  * Check OAuth ports for all providers
  */
 export async function checkAllOAuthPorts(): Promise<OAuthPortDiagnostic[]> {
-  const providers: CLIProxyProvider[] = ['gemini', 'codex', 'agy', 'qwen', 'iflow', 'kiro', 'ghcp'];
+  const providers: CLIProxyProvider[] = [
+    'gemini',
+    'codex',
+    'agy',
+    'qwen',
+    'iflow',
+    'kiro',
+    'ghcp',
+    'claude',
+  ];
   const results: OAuthPortDiagnostic[] = [];
 
   for (const provider of providers) {
@@ -153,7 +164,7 @@ export async function checkAllOAuthPorts(): Promise<OAuthPortDiagnostic[]> {
  * Check OAuth ports for providers that use Authorization Code flow only
  */
 export async function checkAuthCodePorts(): Promise<OAuthPortDiagnostic[]> {
-  const providers: CLIProxyProvider[] = ['gemini', 'codex', 'agy', 'kiro'];
+  const providers: CLIProxyProvider[] = ['gemini', 'codex', 'agy', 'kiro', 'claude'];
   const results: OAuthPortDiagnostic[] = [];
 
   for (const provider of providers) {

src/types/config.ts

@@ -18,7 +18,7 @@ export interface ProfilesConfig {
  */
 export interface CLIProxyVariantConfig {
   /** CLIProxy provider to use */
-  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp';
+  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp' | 'claude';
   /** Path to settings.json with custom model configuration (optional) */
   settings?: string;
   /** Account identifier for multi-account support (optional, defaults to 'default') */

ui/public/assets/providers/claude.svg

@@ -0,0 +1 @@
+<svg height="1em" style="flex:none;line-height:1" viewBox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><title>Claude</title><path d="M4.709 15.955l4.72-2.647.08-.23-.08-.128H9.2l-.79-.048-2.698-.073-2.339-.097-2.266-.122-.571-.121L0 11.784l.055-.352.48-.321.686.06 1.52.103 2.278.158 1.652.097 2.449.255h.389l.055-.157-.134-.098-.103-.097-2.358-1.596-2.552-1.688-1.336-.972-.724-.491-.364-.462-.158-1.008.656-.722.881.06.225.061.893.686 1.908 1.476 2.491 1.833.365.304.145-.103.019-.073-.164-.274-1.355-2.446-1.446-2.49-.644-1.032-.17-.619a2.97 2.97 0 01-.104-.729L6.283.134 6.696 0l.996.134.42.364.62 1.414 1.002 2.229 1.555 3.03.456.898.243.832.091.255h.158V9.01l.128-1.706.237-2.095.23-2.695.08-.76.376-.91.747-.492.584.28.48.685-.067.444-.286 1.851-.559 2.903-.364 1.942h.212l.243-.242.985-1.306 1.652-2.064.73-.82.85-.904.547-.431h1.033l.76 1.129-.34 1.166-1.064 1.347-.881 1.142-1.264 1.7-.79 1.36.073.11.188-.02 2.856-.606 1.543-.28 1.841-.315.833.388.091.395-.328.807-1.969.486-2.309.462-3.439.813-.042.03.049.061 1.549.146.662.036h1.622l3.02.225.79.522.474.638-.079.485-1.215.62-1.64-.389-3.829-.91-1.312-.329h-.182v.11l1.093 1.068 2.006 1.81 2.509 2.33.127.578-.322.455-.34-.049-2.205-1.657-.851-.747-1.926-1.62h-.128v.17l.444.649 2.345 3.521.122 1.08-.17.353-.608.213-.668-.122-1.374-1.925-1.415-2.167-1.143-1.943-.14.08-.674 7.254-.316.37-.729.28-.607-.461-.322-.747.322-1.476.389-1.924.315-1.53.286-1.9.17-.632-.012-.042-.14.018-1.434 1.967-2.18 2.945-1.726 1.845-.414.164-.717-.37.067-.662.401-.589 2.388-3.036 1.44-1.882.93-1.086-.006-.158h-.055L4.132 18.56l-1.13.146-.487-.456.061-.746.231-.243 1.908-1.312-.006.006z" fill="#D97757" fill-rule="nonzero"></path></svg>

ui/src/components/cliproxy/provider-logo.tsx

@@ -20,6 +20,7 @@ const PROVIDER_IMAGES: Record<string, string> = {
   iflow: '/assets/providers/iflow.png',
   kiro: '/assets/providers/kiro.png',
   ghcp: '/assets/providers/copilot.svg',
+  claude: '/assets/providers/claude.svg',
 };
 
 /** Provider color configuration (for fallback only - no background for image logos) */

ui/src/lib/model-catalogs.ts

@@ -311,4 +311,49 @@ export const MODEL_CATALOGS: Record<string, ProviderCatalog> = {
       },
     ],
   },
+  claude: {
+    provider: 'claude',
+    displayName: 'Claude (Anthropic)',
+    defaultModel: 'claude-sonnet-4-5-20250514',
+    models: [
+      {
+        id: 'claude-opus-4-5-20250220',
+        name: 'Claude Opus 4.5',
+        description: 'Most capable Claude model',
+        presetMapping: {
+          default: 'claude-opus-4-5-20250220',
+          opus: 'claude-opus-4-5-20250220',
+          sonnet: 'claude-sonnet-4-5-20250514',
+          haiku: 'claude-haiku-4-5-20250514',
+        },
+      },
+      {
+        id: 'claude-sonnet-4-5-20250514',
+        name: 'Claude Sonnet 4.5',
+        description: 'Balanced performance and speed',
+        presetMapping: {
+          default: 'claude-sonnet-4-5-20250514',
+          opus: 'claude-opus-4-5-20250220',
+          sonnet: 'claude-sonnet-4-5-20250514',
+          haiku: 'claude-haiku-4-5-20250514',
+        },
+      },
+      {
+        id: 'claude-sonnet-4-20250514',
+        name: 'Claude Sonnet 4',
+        description: 'Previous generation Sonnet',
+        presetMapping: {
+          default: 'claude-sonnet-4-20250514',
+          opus: 'claude-opus-4-5-20250220',
+          sonnet: 'claude-sonnet-4-20250514',
+          haiku: 'claude-haiku-4-5-20250514',
+        },
+      },
+      {
+        id: 'claude-haiku-4-5-20250514',
+        name: 'Claude Haiku 4.5',
+        description: 'Fast and efficient',
+      },
+    ],
+  },
 };