# 🎯 Tobit MCP Tool Call Guide - Work Item 594
## Current Status ✅
- ✅ **Server deployed**: https://azuremcpproxy.onrender.com
- ✅ **SSE connections working**: Multiple successful connections detected
- ✅ **Hello/ping messages**: Working perfectly (2-4ms response)
- ❌ **Missing**: The actual tool call for Work Item 594
## 🚨 What's Missing: The Tool Call
After establishing the SSE connection, you need to send a **POST request** to make the actual tool call.
## 📋 Step-by-Step Instructions
### Step 1: Establish SSE Connection (✅ Already Working)
```
GET https://azuremcpproxy.onrender.com/sse
```
This gives you a `sessionId` - you're already doing this correctly!
### Step 2: Make the Tool Call (❌ This is missing!)
After getting the sessionId, send this POST request:
```http
POST https://azuremcpproxy.onrender.com/message?sessionId=YOUR_SESSION_ID
Content-Type: application/json
{
"jsonrpc": "2.0",
"id": "get-workitem-594",
"method": "tools/call",
"params": {
"name": "get_work_item",
"arguments": {
"workItemId": 594
}
}
}
```
## 🔧 Complete Working Example
```javascript
// 1. SSE Connection (you're already doing this)
const eventSource = new EventSource('https://azuremcpproxy.onrender.com/sse');
eventSource.onmessage = function(event) {
const data = JSON.parse(event.data);
// 2. Extract sessionId from endpoint event
if (event.type === 'endpoint') {
const sessionId = extractSessionId(event.data); // e.g., "413cbff2-7575-41ca-9c3f-7dda953c3bd6"
// 3. Make the tool call - THIS IS WHAT'S MISSING!
fetch(`https://azuremcpproxy.onrender.com/message?sessionId=${sessionId}`, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
"jsonrpc": "2.0",
"id": "get-594",
"method": "tools/call",
"params": {
"name": "get_work_item",
"arguments": {
"workItemId": 594
}
}
})
})
.then(response => response.text())
.then(result => {
console.log('Work Item 594 Result:', result);
// This should contain the work item data!
});
}
};
```
## 🎯 Expected Response
When you make the tool call correctly, you should get:
```json
{
"jsonrpc": "2.0",
"id": "get-594",
"result": {
"content": [{
"type": "text",
"text": "# Work Item 594: GOpus eInvoice - UKB Implementierung\n\n**Type**: Project\n**State**: Grün\n**Assigned To**: Eickmann, Morten\n**Iteration**: GOpus GmbH\n**Tags**: None\n**URL**: https://dev.azure.com/GOpus/GOpus GmbH/_workitems/edit/594\n"
}]
}
}
```
## 🔍 What We See in Server Logs
**Current logs show:**
- ✅ "Received SSE connection request"
- ✅ "New SSE connection established"
- ✅ "Sending hello message"
- ✅ "Sending ping to [sessionId]"
**Missing in logs:**
- ❌ No "Looking for session with ID" messages
- ❌ No "Received message for session" logs
- ❌ No tool execution logs
## 💡 Simple Test Command
Try this exact curl command to test:
```bash
# 1. Get a session ID from SSE connection first, then:
curl -X POST "https://azuremcpproxy.onrender.com/message?sessionId=YOUR_SESSION_ID" \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"id": "test-594",
"method": "tools/call",
"params": {
"name": "get_work_item",
"arguments": {
"workItemId": 594
}
}
}'
```
## 🚀 Summary
**You need to add ONE missing step**: After the SSE connection, make a POST request to `/message?sessionId=XXX` with the tool call payload.
The server is ready and waiting - it just needs the actual tool call request! 🎯
