Running client scenario 'tools-call-image' against server: http://127.0.0.1:3953/mcp
Checks:
2026-07-29T03:30:13.332Z [tools-call-image] FAILURE Tool returns image content

Test Results:
Passed: 0/1, 1 failed, 0 warnings

=== Failed Checks ===

  - ToolsCallImage: Tool returns image content
    Error: Failed: unknown tool: 'test_image_content'

Test calling a tool that returns image content.

Server Implementation Requirements:

Implement tool test_image_content with no arguments that returns:

``json
{
  "content": [
    {
      "type": "image",
      "data": "<base64-encoded-png>",
      "mimeType": "image/png"
    }
  ]
}
``

Implementation Note: Use a minimal test image (e.g., 1x1 red pixel PNG)
