claude code with jira MCP constant fail!!!

[Dean Hiller]

From claude code side, I have it working with ALL MCP servers I want(sentry, playwright, firestore) EXCEPT jira MCP server which constantly says 

"> /mcp
⎿  Authentication successful, but server reconnection failed. You may need to manually restart Claude Code for the changes to take effect."

I restart and still does not work.

On the flipside, claude.ai works fine but I think uses a different auth process with atlassian perhaps?    so the atlassian MCP server works!!! but only on claude.ai

soooo, is this a jira atlassian MCP server bug for auth or a claude code bug.  linking claude code issue -> https://github.com/anthropics/claude-code/issues/9127

[Clonch_ Chris A]

From the linked Claude Code issue (!9127), this is due to the removal of SSE for MCPs in version > 2.0.9 since it was deprecated from the MCP standard (https://github.com/modelcontextprotocol/modelcontextprotocol/pull/206).

Is there plans from Atlassian to upgrade their MCP to use to HTTP or STDIO instead?

I'm much prefer to stay on latest versions of Claude Code _and_ use vendor provided MCPs as much as possible.  I don't like the thought of using some kind of MCP proxy given the risk of supply chain attacks.

[Clonch_ Chris A]

Managed to track down the GitHub project and filed a bug -- https://github.com/atlassian/atlassian-mcp-server/issues/8.

[Dean Hiller]

SSE is being removed so this is an atlassian bug to port to the newer protocols and is broken until they do!!!

[David Asaf - atd-us]

I run into this every now and then with different clients. Codex. Claude Code. Cursor. 

I usually switch between direct SSE server to proxy like below

"atlassian-mcp": {

"type": "stdio",

"command": "npx",

"args": [

"@playwright/mcp@latest",

"--extension"

],

"env": {}

},

[Dean Hiller]

VERY odd as sentry MCP server uses same protocol and is working so is it claude or jira -> 

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