ChatGPT Code Review via Chrome

Review code using GPT-5.2 Pro through Claude Code's Chrome browser integration.

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METHOD: JSON-ENCODED TEXT INJECTION

Inject the complete code into ChatGPT's prompt using JavaScript with JSON encoding to preserve newlines.

The key insight: Use JSON.stringify() on the file content, then JSON.parse() in the injected JavaScript. This correctly preserves all newlines and special characters.

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Prerequisites

1. Claude Code with Chrome integration: claude --chrome
2. Claude in Chrome extension installed (v1.0.36+)
3. User logged into chat.com in Chrome
4. ChatGPT Pro subscription (for GPT-5.2 Pro access)

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Workflow

Step 1: Read the Complete File

Read the ENTIRE file. If too large for one read, read in chunks and concatenate.

content = Read(file.cpp)  // Get ALL content

Step 2: Navigate to ChatGPT

1. Navigate to https://chat.com
2. Wait for page load
3. Verify logged in

Step 3: Select GPT-5.2 Pro

1. Click model selector dropdown
2. Select "GPT-5.2 Pro"

Step 4: Build and Execute JavaScript

USE THIS EXACT ALGORITHM:

import json

def build_javascript(file_content: str, context: str) -> str:
    """
    Build JavaScript that injects the prompt into ChatGPT.
    Uses JSON encoding to preserve ALL newlines and special characters.
    """
    # Combine context and code into one prompt
    full_prompt = f"""{context}

Complete source code:

{file_content}

    # JSON.stringify handles ALL escaping correctly
    json_encoded = json.dumps(full_prompt)

    # Build JavaScript that parses the JSON to get the string with real newlines
    javascript = f"""var el = document.querySelector('#prompt-textarea');
var text = JSON.parse({json_encoded});
el.innerText = text;
el.dispatchEvent(new Event('input', {{bubbles: true}}));"""

    return javascript

Example output:

var el = document.querySelector('#prompt-textarea');
var text = JSON.parse("Analyze this code:\\n\\n```\\n#include <stdio.h>\\nint main() {\\n    return 0;\\n}\\n```");
el.innerText = text;
el.dispatchEvent(new Event('input', {bubbles: true}));

The \n inside the JSON string is correct - JSON.parse() converts them to real newlines.

Step 5: Submit

1. Click send button or press ENTER
2. Verify message was sent
3. Return immediately - do NOT wait for completion

"Submitted to GPT-5.2 Pro. This typically takes 5-30 minutes. Ask me to 'fetch ChatGPT results' when ready."

Step 6: Fetch Results (on user request)

1. Navigate to ChatGPT tab
2. Check if complete (no spinner)
3. Extract and return response

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Error Recovery

Issue	Action
Code appears as single line	You did NOT use JSON.parse(). Re-read Step 4.
Not logged in	Ask user to log in
Model unavailable	Fall back to GPT-5.2 Thinking

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Non-Blocking Workflow

GPT-5.2 Pro takes 5-30+ minutes. Submit and return immediately. Fetch results when user asks.