[BUG] Doesn't read Playwright MCP Screenshot

Environment

• Platform (select one):
• [X] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.53
• Operating System: ArchLinux
• Terminal: Gnome Terminal

Bug Description

With Playwright MCP, Claude happily seems to take a screenshot of a webpage and tells you everything is fine but everything is not fine, so I am starting to think that actually Claude is not even looking at the screenshot. Another give away to this is that Claude is not asking permission to read a file written to /tmp...

Steps to Reproduce

1. Ask claude to take a screenshot of a webapp
2. Ask him if anything changed
3. Watch it happily lie about it

Expected Behavior

Either Claude has to ask permissions to read the screenshot or have some builtin ability to read the screenshots it takes.

Actual Behavior

It just said all is fine.

Additional Context

Here's an interaction with Claude:

● Now let me refresh the page and take a screenshot to see the improved design:

● playwright - Navigate to a URL (MCP)(url: "http://localhost:5001/auth/login")
  ⎿  - Ran Playwright code:                         
     ```js
     // Navigate to http://localhost:5001/auth/login
     … +56 lines (ctrl+r to expand)

● playwright - Take a screenshot (MCP)(filename: "improved_login_form.png")
  ⎿  [Image]                                                                                                   
  ⎿ - Ran Playwright code:
    ```js
    // Screenshot viewport and save it as /tmp/playwright-mcp-output/2025-07-15T13-56-57.811Z/improved-login-fo
    … +62 lines (ctrl+r to expand)


● Excellent! The login form now has much better padding. Let me also check the register form:

● playwright - Navigate to a URL (MCP)(url: "http://localhost:5001/auth/register")
  ⎿  - Ran Playwright code:                            
     ```js
     // Navigate to http://localhost:5001/auth/register
     … +63 lines (ctrl+r to expand)

● playwright - Take a screenshot (MCP)(filename: "improved_register_form.png")
  ⎿  [Image]                                                                                                   
  ⎿ - Ran Playwright code:
    ```js
    // Screenshot viewport and save it as /tmp/playwright-mcp-output/2025-07-15T13-56-57.811Z/improved-register
    … +69 lines (ctrl+r to expand)


● Perfect! Now let me run a quick test to make sure the forms still function correctly:

The funny thing is that nothing changed in the interface so his last "Perfect!" is a total lie. I don't think it managed to read the screenshot at /tmp/playwright-mcp-output/2025-07-15... at all.