Connect MCP Server to VS code

[Kai Krause]

Hi,

i tried to connect VS Code to the MCP and use this documentation It installs the MCP Remote Server as Extension and i get this output. I authenticated over the procided dialogs after the installation but get this as output 

2025-11-13 18:34:05.818 [info] Starting server atlassian/atlassian-mcp-server

2025-11-13 18:34:05.818 [info] Connection state: Starting

2025-11-13 18:34:05.818 [info] Starting server from LocalProcess extension host

2025-11-13 18:34:05.819 [info] Connection state: Running

2025-11-13 18:34:06.106 [info] Populated auth metadata

2025-11-13 18:34:06.255 [info] 404 status sending message to https://mcp.atlassian.com/v1/sse, will attempt to fall back to legacy SSE

2025-11-13 18:34:06.594 [info] Discovered 27 tools

the config 

{

    "servers": {

        "atlassian/atlassian-mcp-server": {

            "type": "http",

            "url": "https://mcp.atlassian.com/v1/sse",

            "gallery": "https://api.mcp.github.com",

            "version": "1.0.0"          

        }

    },

    "inputs": []

}

when i click onto the url get this in the browser 

{"error":"invalid_token","error_description":"Missing or invalid access token"} 

I dont get the issue , when i try @MCP its not connected. It seems to me that i have a misunderstanding or so.  

What i doinjg wrong ?

BR
Kai 

[Ryan Beymer]

@Kai Krause 

Add the below to your mcp.json

"atlassian": {
    "type": "http",
    "url": "https://mcp.atlassian.com/v1/sse",
    "gallery": true
},

Click start, should run you through the auth flow with your jira instance. 

[Kai Krause]

Hi, 
thx. 

the connection flow comes, but i can not call the mcp from visual studio code with . @@mcp. Ot i try ist wrong to talk to the mcp ? 

2025-11-14 08:11:52.331 [info] Starting server from LocalProcess extension host

2025-11-14 08:11:52.334 [info] Connection state: Running

2025-11-14 08:11:52.546 [info] Populated auth metadata

2025-11-14 08:11:52.609 [info] 404 status sending message to https://mcp.atlassian.com/v1/sse, will attempt to fall back to legacy SSE

2025-11-14 08:11:52.872 [info] Discovered 27 tools

2025-11-14 08:14:41.367 [info] Stopping server atlassian

2025-11-14 08:14:41.368 [info] Connection state: Stopped

[Ryan Beymer]

Morning @Kai Krause 

You are connecting to the SSE, `2025-11-14 08:11:52.872 [info] Discovered 27 tools`. The connection is on demand so it will disconnect when not in use. 

I typically test a connection by putting in the prompt "Can you see my jira instance?" or "Can you see my X jira project?" 

Make sure you have your atlassian tools selected https://share.bloomerang.com/v1u8A8qJ