playwright-mcp fails to load via MCP Registry

[juanluisbujeda]

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• I have searched for duplicate or closed issues

Operating System

macOS 26.0

Kiro Version

1.28.1

Bug Description

playwright-mcp consistently fails with error:

McpError(ErrorData { code: ErrorCode(-32002), message: "connection closed: initialize response", data: None })

Steps to Reproduce

1. Configure ~/.kiro/settings/mcp.json:
   { "mcpServers": { "playwright-mcp": { "type": "registry" } } }
2. Clean all caches:
   npm cache clean --force rm -rf ~/Library/Caches/ms-playwright npm uninstall -g @playwright/mcp
3. Install Playwright browsers:
   npx playwright install chromium
4. Start kiro-cli chat
5. Error appears:
   `✗ playwright-mcp has failed to load after 0.42 s

• Mcp error: -32002: connection closed: initialize response`

Expected Behavior

playwright-mcp should load successfully when configured via MCP Registry.

Conversation ID

No response

Additional Context

Logs
From $TMPDIR/kiro-log/kiro-chat.log:
ERROR chat_cli::cli::chat::tool_manager: Error loading server playwright-mcp: McpError(ErrorData { code: ErrorCode(-32002), message: "connection closed: initialize response", data: None })

[juanluisbujeda]

I’ve been testing several MCPs and all of them fail — I’ve tried Datadog, Atlassian, Playwright, Figma, …

[github-actions]

🤖 Potential Duplicate Detected

This issue appears to be similar to:

• #6122: Xcode MCP server loads successfully but tools are not available to the agent (85% similar)
• #5930: Kiro one-click service issues with MCP config content (85% similar)
• #5839: Kiro-cli MCP cliente fail listing resources (85% similar)
• #5452: MCP servers failing to load after Kiro CLI 1.25.0 update (Feb 4, 2026) (85% similar)
• #5020: AWS Serverless MCP Server fails to initialize - stdio connection closed error (85% similar)
• #4762: # Bug Report: MCP Configuration Cross-Platform Compatibility Issue (85% similar)
• #4717: HTTP-based MCP servers not loading tools into chat sessions (85% similar)
• #5873: MCP tools not injected into LLM tool list for workspace-defined agents (.kiro/agents/*.json) (82% similar)

What happens next?

• ⏰ This issue will be automatically closed in 3 days
• 🏷️ If this is not a duplicate, you can prevent automatic closure by adding a comment or reacting with 👎 to this message.
• 💬 Comment on the original issue if you have additional information

Why is this marked as duplicate?
Both issues involve MCP server loading problems - new issue has playwright-mcp failing to load with connection errors, existing issue has Xcode MCP server loading but tools not being available, indicating similar MCP integration failures

[github-actions]

This issue has been automatically closed as it appears to be a duplicate of #6122.

If you believe this is incorrect, please comment on this issue and a maintainer will review it.