OpenCode web and desktop are not loading MCPs

[mayeenulislam]

Description

Possibly from the last two updates, the MCPs are not loading on the web or desktop versions but are loading and working perfectly on the TUI.

I tested removing all the plugins. Tried activating and removing MCPs one by one.

The issue happened on both Windows 11 and macOS Tahoe Version 26.4. I installed OpenCode on Windows using npm, and on Mac, using the default cURL method. I tried completely removing and installing it fresh on Windows with a fresh configuration, but it won't work.

Plugins

No response

OpenCode version

1.15.13

Steps to reproduce

1. Install OpenCode CLI
2. Set up with the following configuration:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "context7": {
      "type": "remote",
      "url": "https://mcp.context7.com/mcp",
      "enabled": true,
      "headers": {
        "CONTEXT7_API_KEY": "API_KEY_HERE"
      }
    },
    "playwright": {
      "type": "local",
      "command": [
        "npx",
        "@playwright/mcp@latest"
      ],
      "enabled": true
    }
  },
  "plugin": [
      "superpowers@git+https://github.com/obra/superpowers.git"
  ]
}

👆 You can use any one of these MCPs or remove all of them. You can remove the plugin as well.

3. Run opencode mcp list (MCPs are connected)
4. Run opencode web

In the browser version (or in the Desktop), the MCPs are not there. But if you have any plugin listed, it'll be there.

Screenshot and/or share link

MCPs loaded but...

MCPs not loaded on Web UI

Operating System

Windows 11 and macOS Tahoe Version 26.4

Terminal

CMD on Windows and Oh My Zsh (Mac)

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• After upgrading to 1.15.13, the desktop displays 0 MCP services #30839: MCP services showing as empty after upgrading to v1.15.13 (same version, same symptom on desktop)
• [Bug] v1.15.13 Desktop: MCP tab shows "No MCPs configured" despite sidecar API returning correct data #30538: Desktop MCP tab shows "No MCPs configured" despite correct config in v1.15.13 (detailed analysis of the same root cause)

Both issues report MCPs not appearing in the desktop/web UI on v1.15.13, which matches your report. Consider checking those threads for any workarounds or updates, and if this is the same issue, it may be best to consolidate there.

[rekram1-node]

should be fixed on latest