How to SSE Connection Pasing and Getting env values for every specific users context

[canerunutkan]

Pre-submission Checklist

• I have checked that this question would not be more appropriate as an issue in a specific repository
• I have searched existing discussions and documentation for answers

Question Category

• Protocol Specification
• SDK Usage
• Server Implementation
• General Implementation
• Documentation
• Other

Your Question

How to Pass env values to Server from Cursor IDE and Access env for every connection's specific Env values on context

Cursor mcp.json

"JiraMcp": {
  "type": "sse",
  "url": "http://localhost:3000/sse",
  "env": {
    "JIRA_TOKEN": "TOKEN",
  }

those are not working:
var token= Environment.GetEnvironmentVariable("env:JIRA_TOKEN");
var token= Environment.GetEnvironmentVariable("JIRA_TOKEN");

Also Environment.GetEnvironmentVariables() lists all values and token is not exist in the list.

Project is working fine, I get Echo response on Cursor.
But I need every different connections Token values to perform actions by user tokens.
Example usage:
user 1 says update task compelted: then we must see that user1 name on the jira who is make update
user 2 says update task compelted: then we must see that user2 name on the jira who is make update

So I need every connections env values on tools by context. Is there any way ?

program.cs

builder.Services.AddMcpServer().WithToolsFromAssembly();
var app = builder.Build();
app.MapMcp();

Controller

  [McpServerTool, Description("Echoes the input back to the client.")]    
  public async Task<IActionResult> EchoAsync(string message)
      => Ok(await _querySender.QueryAsync(new EchoRequest(message)));

handler

public class EchoHandler : IQueryHandler<EchoRequest, ResponseModel<EchoResponse>>
{
    public async Task<ResponseModel<EchoResponse>> HandleAsync(EchoRequest query)
    {
        var token = Environment.GetEnvironmentVariable("env:JIRA_URL");
        var model = new ResponseModel<EchoResponse>
        {
            Data = new EchoResponse("hello " + query.Message + " " + token)
        };

        return model;
    }
}