Claude Desktop / Cowork Connector

[matevz-ap]

Webflow Connector in Claude Cowork Returns Empty Responses

Problem Description

The Webflow connector in Claude Cowork shows as connected but fails to return any data when attempting to retrieve CMS Collection items, site information, or any other data through Webflow tools.

Environment

• Product: Claude Cowork
• Connector: Webflow MCP
• Connection Method: UI-based connector (also tested manual MCP server config)
• Connection Status: Shows as "connected": true in MCP registry

Expected Behavior

When using Webflow tools (with or without Site ID and Collection ID), Claude should be able to:

• List available sites
• Retrieve site details
• List pages
• Access CMS collections and items
• Retrieve other Webflow data

Actual Behavior

• All Webflow data tools return silent empty responses
• Function calls complete without output or errors
• Exact response received:

  <function_results>
  <system>Tool ran without output or errors</system>
  </function_results>

• No error messages are generated
• No data is returned
• Tools execute but produce no result

Steps to Reproduce

1. Connect Webflow connector through Claude Cowork UI
2. Verify connection shows as "connected" in registry
3. Attempt to retrieve data using any Webflow tool:
   • Example: data_sites_tool with action "list_sites"
   • Example: data_pages_tool with action "get_pages_list"
4. Observe empty response with no output or errors

What Works

• ✅ Connector shows as "connected" in MCP registry ("connected": true)
• ✅ ask_webflow_ai tool functions correctly (returns AI responses about Webflow)
• ✅ webflow_guide_tool returns documentation
• ✅ Other MCP connectors (non-Webflow) work as expected

What Doesn't Work

• ❌ data_sites_tool - returns empty response (even without parameters)
• ❌ data_pages_tool - returns empty response
• ❌ data_cms_tool - cannot list collections or items
• ❌ All other Webflow data retrieval and designer tools
• ❌ Every tool that requires actual Webflow API access fails silently

Troubleshooting Attempted

1. ✅ Reconnected the Webflow connector - no change
2. ✅ Refreshed the connector - no change
3. ✅ Tested other MCP connectors - they work correctly, isolating issue to Webflow
4. ✅ Manual MCP config - tested adding server to config file directly
5. ✅ Verified tool availability - all expected tools are present
6. ✅ Tried multiple different tools and parameters - all produce same empty response
7. ✅ Confirmed connection status in registry - shows as connected

Additional Observations

Authentication Flow Discrepancy

When comparing authentication flows:

• Manual MCP config: Webflow authentication screen includes redirect after successful authentication
• UI connection: Webflow authentication has no redirect after authentication

This redirect difference may indicate an OAuth callback/redirect issue in the UI-based connection flow.

Working vs Non-Working Tools

Interesting distinction:

• Working: Tools that don't require Webflow API calls (ask_webflow_ai, webflow_guide_tool)
• Not working: All tools that require actual Webflow API authentication and data access

[viratatwebflow]

We added the fix. it should start working now