Added support for signing in with a ChatGPT Plus/Pro/Team subscription

CHANGELOG.md

@@ -1,3 +1,6 @@
+- Renamed the "Subscription" connection type to "Claude Subscription" in Profile settings, to distinguish it from the new "ChatGPT Subscription" connection type
+- Added support for signing in with a ChatGPT Plus/Pro/Team subscription as a new profile connection type, routing sessions through OpenAI's Codex backend instead of requiring an OpenAI API key; click "Copy sign in link" to copy the sign-in URL, open it in your own browser, then paste the resulting code back to complete sign-in — the plugin never opens a browser or waits on it automatically. Once signed in, "Model Aliases…" is available for this profile and fetches the live list of models available to your account instead of a fixed list; if the fetch fails, the upstream error is shown in the dialog's status line
+
 # 1.2.28 (2026-07-15)
 
 - Fixed a "Warning" dialog showing raw XML content sometimes appearing at IDE startup after using a diff view

README.md

@@ -14,6 +14,7 @@ NetBeans Claude Code GUI is a NetBeans IDE plugin that embeds the Claude Code CL
 - **File attachments** — attach files via `@path` tokens with auto-completion popup, drag-and-drop, and clipboard paste support
 - **Multiple profiles** — run Claude Code under separate accounts or API keys for different projects, each with an isolated config directory, authentication, proxy, and model settings
 - **OpenAI-compatible proxy** — route Claude Code through any OpenAI-compatible provider (OpenAI, Azure OpenAI, Groq, DeepSeek, Ollama, LM Studio, and others) via a built-in translation proxy; no changes to Claude Code CLI required
+- **ChatGPT subscription sign-in** — route Claude Code through OpenAI's Codex backend using your ChatGPT Plus/Pro/Team subscription instead of an API key; sign in via a copy-link/paste-code flow, then pick from your account's live model list
 - **Session management** — start new sessions, continue the last session, or resume a specific past session; sessions persist across IDE restarts
 - **Markdown Preview** — live-rendered markdown tab for plan files and MCP-initiated previews; includes a find bar (Ctrl+F) and font zoom (Alt+Scroll)
 - **Auto Plan Preview** — when Claude writes a plan file, a live preview tab opens automatically as soon as you accept the diff

docs/user-manual.md

@@ -485,16 +485,17 @@ Select the authentication type using the radio buttons:
 | Type | Fields to fill in | How to authenticate |
 |------|------------------|-------------------|
 | **Claude Managed** | None | Claude manages authentication itself. Run `claude` in a terminal once to set it up, or Claude will prompt you on first launch. Use `/login` in the session terminal to re-authenticate. |
-| **Subscription** | OAuth token | Obtain the token at [claude.ai](https://claude.ai) (requires Pro, Max, Team, or Enterprise subscription). **Note:** OAuth tokens expire periodically and must be regenerated and re-entered manually. For a smoother experience, prefer **Claude Managed** instead. |
+| **Claude Subscription** | OAuth token | Obtain the token at [claude.ai](https://claude.ai) (requires Pro, Max, Team, or Enterprise subscription). **Note:** OAuth tokens expire periodically and must be regenerated and re-entered manually. For a smoother experience, prefer **Claude Managed** instead. |
 | **Claude API** | API key | Obtain the key at [console.anthropic.com](https://console.anthropic.com) (requires an Anthropic Console account with API access). |
 | **Claude-compatible API** | API key + Base URL | Use the API key and base URL provided by your third-party provider (Anthropic-compatible endpoint). |
 | **OpenAI-compatible API** | API key + Base URL | Route Claude Code through any OpenAI-compatible provider. The plugin starts an internal proxy that translates Anthropic API calls to OpenAI Chat Completions format. See [OpenAI-compatible API](#openai-compatible-api) below. |
+| **ChatGPT Subscription** | Sign in via browser | Route Claude Code through OpenAI's Codex backend using a ChatGPT Plus/Pro/Team subscription instead of an API key. See [ChatGPT Subscription](#chatgpt-subscription) below. |
 
 > **Note:** Changes to connection parameters (API key, Base URL) take effect only after restarting the session.
 
-### Model aliases (Claude-compatible API only)
+### Model aliases (Claude-compatible API, OpenAI-compatible API, and ChatGPT Subscription)
 
-If your provider names models differently from Anthropic's standard names, the plugin cannot match them to the `sonnet`, `opus`, and `haiku` aliases used by Claude Code. In that case, set the alias to the actual model ID used by your provider (for example, with an `anthropic/` prefix).
+If your provider names models differently from Anthropic's standard names, the plugin cannot match them to the `sonnet`, `opus`, and `haiku` aliases used by Claude Code. In that case, set the alias to the actual model ID used by your provider (for example, with an `anthropic/` prefix). For **ChatGPT Subscription**, **Model Aliases…** becomes available once you're signed in and fetches the live list of models available to your account instead of a fixed list.
 
 Click **Model Aliases…** to open the Model Aliases dialog.
 
@@ -512,7 +513,7 @@ The dialog shows a table with three columns:
 
 | Button | Effect |
 |--------|--------|
-| **Fetch** | Queries the provider's models endpoint using the configured API key, fills the table with discovered model IDs, and marks each as available (✓) or unavailable (✗) |
+| **Fetch** | Queries the provider's models endpoint (using the configured API key, or your signed-in ChatGPT session for **ChatGPT Subscription**), fills the table with discovered model IDs, and marks each as available (✓) or unavailable (✗) |
 | **Add** | Opens an input dialog; enter a model ID to append a new row to the table (with blank alias and no availability mark) |
 | **Rename** | Opens an input dialog pre-filled with the selected row's ID; confirm to update the model ID in place |
 | **↑ / ↓** | Reorder rows — the order determines how models appear in the status bar model selector |
@@ -592,6 +593,33 @@ Without model aliases, Claude Code will send Anthropic model names (e.g. `claude
 - Images in conversations (base64 content) are forwarded in OpenAI vision format; provider must support it.
 - Changes to the profile's Base URL or API Key take effect only after restarting the session.
 
+### ChatGPT Subscription
+
+Routes Claude Code through OpenAI's own Codex backend using your ChatGPT Plus/Pro/Team subscription, instead of an OpenAI API key. Like **OpenAI-compatible API**, this works via the plugin's internal proxy — no changes to Claude Code CLI are required.
+
+**How it works:**
+
+The plugin never opens or waits on a browser itself, since the browser you sign in with may be on a different network path (proxy, VPN, remote machine) than the plugin. Instead:
+
+1. Click **Copy sign in link** — the plugin generates a one-time sign-in link and copies it to the clipboard.
+2. Paste the link into your own browser and sign in to your ChatGPT account there.
+3. After signing in, copy the code shown on the confirmation page and paste it back into the field in the plugin.
+4. Click **Complete Sign-in**. The profile now shows **Signed in as `<email>`**.
+
+You can click **Copy sign in link** again at any time to cancel a stuck attempt and generate a fresh link — there is no timeout to wait out.
+
+**Setup:**
+
+1. Create a new profile and select **ChatGPT Subscription** as the connection type.
+2. Sign in as described above.
+3. Open **Model Aliases…** and click **Fetch** to pull the current list of models available to your account, then assign aliases the same way as for [OpenAI-compatible API](#model-aliases-claude-compatible-api-openai-compatible-api-and-chatgpt-subscription) above.
+
+**Limitations:**
+
+- Only models Codex actually supports for a ChatGPT-subscription login work — arbitrary model IDs will be rejected by OpenAI's backend.
+- Usage is subject to your ChatGPT subscription's own rate limits, shared across all Codex/ChatGPT clients on that account.
+- Sign-in tokens are refreshed automatically while a session is running; if a refresh fails (e.g. the session was revoked from your OpenAI account), sign in again from the Profiles tab.
+
 ### Extra environment variables
 
 Arbitrary `KEY=VALUE` pairs injected into the Claude process environment. Applied last — they override all other profile variables. Use this for provider-specific configuration.

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>io.github.nbplugins</groupId>
     <artifactId>netbeans-plugin-claude-code-gui</artifactId>
-    <version>1.3.0-SNAPSHOT</version>
+    <version>1.3.18-SNAPSHOT</version>
     <packaging>nbm</packaging>
     <name>Netbeans Plugin Claude Code GUI</name>
     <description>NetBeans plugin that provides a GUI for Claude Code CLI — run claude code sessions directly inside the IDE.</description>

src/main/java/io/github/nbplugins/claudecodegui/ClaudeCodeInstaller.java

@@ -263,6 +263,14 @@ public void registerOpenAIProxy(String uuid, String baseUrl, String apiKey,
         }
     }
 
+    @Override
+    public void registerChatgptSubscriptionProxy(String uuid, String profileId, String accessToken,
+            String accountId, io.github.nbplugins.claudecodegui.settings.ProxyConfiguration proxy) {
+        if (mcpServer != null) {
+            mcpServer.registerChatgptSubscriptionProxy(uuid, profileId, accessToken, accountId, proxy);
+        }
+    }
+
     @Override
     public void deregisterOpenAIProxy(String uuid) {
         if (mcpServer != null) {