createJiraIssue tool returns "Input data should be a String" error

[realgpasternak]

Description

The createJiraIssue tool is failing when called from GitHub Copilot Chat in VS Code with an error message "Input data should be a String" when attempting to create a new Jira issue.

Steps to Reproduce

1. Setup Atlassian MCP

{
	"servers": {
		"atlassian": {
			"url": "https://mcp.atlassian.com/v1/mcp",
			"type": "http"
		}
	}
}

2. Call the createJiraIssue tool with valid parameters:

   • cloudId: A valid Atlassian Cloud ID
   • projectKey: A valid project key with create permissions
   • issueTypeName: A valid issue type name (e.g., "Task", "Bug")
   • summary: A non-empty summary string

3. The tool returns an error: "Input data should be a String"

Expected Behavior

The tool should create a new Jira issue and return the issue details.

Actual Behavior

The tool fails with the error "Input data should be a String", regardless of the input values provided.

Environment

• MCP Server version: v1
• VS Code version: 1.107.1
• Date: December 30, 2025

Additional Notes

• Tested with different issue type names and IDs, different models (Grok Code Fast 1, Claude Haiku 4.5, GPT-5-mini
• Cloud ID and project key are valid and have appropriate permissions
• The error message is not specific about which input is invalid