WorldAI Browser Login via MCP

WorldAI Browser Login via MCP

This skill documents how to authenticate with WorldAI in a real browser using Chrome Superpowers MCP or Playwright MCP for browser-based testing.

Test Accounts

Account	Purpose	Campaigns
<[email protected]>	Secondary test account	44 campaigns
[email protected]	Primary account (owner)	146 campaigns

Server URLs

Environment	URL
Deployed Dev	https://mvp-site-app-s2-i6xf2p72ka-uc.a.run.app
Local	http://localhost:8081

Chrome Superpowers MCP Login Flow

Step 1: Navigate to WorldAI

# Navigate to deployed server
mcp__chrome-superpower__use_browser(
    action="navigate",
    payload="https://mvp-site-app-s2-i6xf2p72ka-uc.a.run.app"
)

Step 2: Click Sign In with Google

# Click the Google sign-in button
mcp__chrome-superpower__use_browser(
    action="click",
    selector="//button[contains(text(), 'Sign in with Google')]"
)

Step 3: Complete OAuth in Popup

The Firebase OAuth popup will open. The MCP browser cannot track the popup window, but:

• If you've previously signed in with Google in the same browser profile, it may auto-complete
• Manual intervention may be needed to click your Google account
• After successful auth, the main page will show your email in the header

Step 4: Verify Login Success

# Extract page content to verify login
mcp__chrome-superpower__use_browser(
    action="extract",
    payload="text",
    selector="body"
)

Success indicators:

• Email address visible in header (e.g., [email protected])
• "My Campaigns" section visible
• Campaign count shown (e.g., "Showing 146 of 146 campaigns")

Step 5: Navigate to Campaign

# Navigate directly to a campaign
mcp__chrome-superpower__use_browser(
    action="navigate",
    payload="http://localhost:8081/game/CAMPAIGN_ID"
)

Evidence Collection

Screenshot Capture

# Capture screenshot as evidence
mcp__chrome-superpower__use_browser(
    action="screenshot",
    payload="evidence-name.png"
)

Screenshots are saved to Chrome Superpowers temp directory: /var/folders/j0/.../chrome-session-*/XXX-action-timestamp/screenshot.png

Copy to Evidence Directory

# Create evidence directory
mkdir -p /tmp/worldai-browser-evidence/

# Copy screenshot
cp /path/to/chrome-session/*/screenshot.png /tmp/worldai-browser-evidence/

OCR Validation

Primary Method: Claude Code Native Vision

Claude Code can directly read and analyze image files as a multimodal LLM:

# Use the Read tool on PNG files - Claude sees the image directly
Read(file_path="/tmp/worldai-browser-evidence/screenshot.png")
# Claude will describe what it sees: user email, campaign list, UI state

Secondary Method: Tesseract OCR (Cross-validation)

python3 - <<'PY'
from PIL import Image
import pytesseract

image_path = "/tmp/worldai-browser-evidence/screenshot.png"
img = Image.open(image_path)
text = pytesseract.image_to_string(img)

# Verify login success - check for @gmail.com to detect any logged-in user
if "@gmail.com" in text:
    print("SUCCESS: User is logged in")

# Also check for expected page content
if "My Campaigns" in text:
    print("SUCCESS: Campaigns page visible")

print("\n=== Full OCR Output ===")
print(text)
PY

Example: Full Login Test

# 1. Navigate
mcp__chrome-superpower__use_browser(action="navigate", payload="https://mvp-site-app-s2-i6xf2p72ka-uc.a.run.app")

# 2. Click Sign In
mcp__chrome-superpower__use_browser(action="click", selector="//button[contains(text(), 'Sign in with Google')]")

# 3. Wait for OAuth popup (manual intervention if needed)

# 4. Take screenshot
mcp__chrome-superpower__use_browser(action="screenshot", payload="login-test.png")

# 5. Extract and verify
mcp__chrome-superpower__use_browser(action="extract", payload="text", selector="body")

Playwright MCP Alternative

If Chrome Superpowers is unavailable, use Playwright MCP:

# Navigate
mcp__playwright-mcp__browser_navigate(url="https://mvp-site-app-s2-i6xf2p72ka-uc.a.run.app")

# Get snapshot
mcp__playwright-mcp__browser_snapshot()

# Click login button
mcp__playwright-mcp__browser_click(element="Sign in with Google button", ref="button-ref")

# Take screenshot
mcp__playwright-mcp__browser_take_screenshot()

Troubleshooting

Session Lost After Navigation

Firebase OAuth sessions may not persist across page navigations in MCP browsers.

Solution: Navigate to the target page directly after authentication completes, or use the same tab for all operations.

OAuth Popup Not Completing

The MCP browser cannot interact with popup windows.

Solution: Use a browser profile that's already logged into Google, or manually complete the OAuth flow when the popup appears.

"No token provided" Error

The API endpoint requires Firebase authentication.

Solution: Ensure you've completed the OAuth flow and the session is active. Check the header for your email address.

Related Skills

• browser-testing-ocr-validation.md - OCR validation for browser tests
• chrome-superpowers-reference.md - Chrome Superpowers MCP reference
• playwright-mcp-manual-interaction.md - Playwright MCP manual interaction