Unable to Authenticate Atlassian MCP for Claude

[Alexandra Klock]

Hi,

My Atlassian MCP connection to Claude broke 2 days ago after working for months. 

I have since tried everything to re-establish the connection without luck. 

Claude's attempts to fix it have been unsusucessful.

[Tomislav Tobijas]

Hi @Alexandra Klock ,

Just to confirm - you're using MCP integration and not the native Atlassian <> Claude connector?
If we're talking about MCP, can you share how you've configured it? 👀

Note that in 3 days (30th June 2026), usage of https://mcp.atlassian.com/v1/sse as a server endpoint will no longer be supported.
There's more info around that here: Setting up clients 

Cheers,
Tobi

[Alexandra Klock]

Hi @Tomislav Tobijas 

I had been using the Atlassian MCP connector through Claude Dektop (via the chat option) to manage and create confluence pages. 

This is the current config:

{
"mcpServers": {
"atlassian": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.atlassian.com/v1/mcp/authv2"
]
}
},

[VENKATESWARLU KURUVA]

Hi @Alexandra Klock ,

This is a common issue with Atlassian MCP + Claude integrations breaking. Here's the fix:

Most likely cause: Your OAuth token expired or was revoked.

Quick steps:

Revoke the old connection — Go to Atlassian API tokens and remove the old MCP token.

Re-authenticate — In Claude, remove the MCP server config, then re-add it fresh with a new OAuth flow.

Check scopes — Ensure the required scopes (read:confluence-content.all, read:jira-work, etc.) are granted during re-auth.

Verify the MCP server URL — Atlassian recently updated some endpoints; make sure you're using the latest config from the https://developer.atlassian.com/cloud/mcp/.

If it still fails: Clear Claude's MCP cache (delete ~/.claude/mcp.json or equivalent) and start the connection from scratch.

[Jason Krewson]

I'm not sure on this but I did find a good reference that should be helpful. 

Check the answer on page: Atlassian MCP Integration with Claude Completely Stopped Working - Need Help! 

Hope it helps!