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Using Atlassian MCP within Cursor error 400

Daniel McKenzie June 23, 2025

Hi,

 

I am trying to connect curson on https://mcp.atlassian.com/v1/sse, it brings me to the login page, I accept, it moves me back to cursor to accept the redirect but when I do I get this error :

2025-06-23 10:21:59.398 [info] [user-Test] Received OAuth callback with code
2025-06-23 10:21:59.755 [error] [user-Test] Failed to complete OAuth exchange Token exchange failed: HTTP 400
My mcp config is :
"AtlassianMCP": {
    }


Any idea what can cause this, some collegues are able to log on the corporate Jira with the same setup? What am I missing?

1 answer

1 vote
amy.keating
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June 24, 2025

I am having the exact same issue.  Would love an answer as well.

Jason Myers
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July 21, 2025

I'm also having this issue, but it works in VSCode

Daniel McKenzie July 21, 2025

@Jason Myers How do you trigger a LLM search from VSCode easily? I would like to test it in VSCode if I'm having the same issue as you?

Jason Myers
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July 21, 2025

So I got it to work in Cursor now also:


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

Then my prompt is something like:
Let's create a plan for jira ticket AIP-237 and store it in a markdown document. don't worry about timelines just focus on the development tasks.

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