From 8bd1a20e09cd44e0e035d10bb48bd0f6bf5d65ed Mon Sep 17 00:00:00 2001
From: Giulio Eulisse <10544+ktf@users.noreply.github.com>
Date: Sun, 24 May 2026 19:07:43 +0200
Subject: [PATCH] DPL MCP: expose the version in the MCP

This allows your favourite LLM to spot missing recompilations.
---
 Framework/Core/scripts/dpl-mcp-server/dpl_mcp_server.py | 6 ++++--
 Framework/Core/src/StatusWebSocketHandler.cxx           | 5 ++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/Framework/Core/scripts/dpl-mcp-server/dpl_mcp_server.py b/Framework/Core/scripts/dpl-mcp-server/dpl_mcp_server.py
index ed457b8a57d9d..6ad91dd44764e 100644
--- a/Framework/Core/scripts/dpl-mcp-server/dpl_mcp_server.py
+++ b/Framework/Core/scripts/dpl-mcp-server/dpl_mcp_server.py
@@ -190,9 +190,10 @@ async def connect(port: int = 0, pid: int = 0, name: str = "") -> str:
     _workflows[wf_name] = conn
 
     devices = conn.snapshot.get("devices", [])
+    version = conn.snapshot.get("version", "unknown")
     return (
         f"Connected to workflow '{wf_name}' on port {port} "
-        f"({len(devices)} device(s))."
+        f"({len(devices)} device(s), version: {version})."
     )
 
 
@@ -232,9 +233,10 @@ async def connect_hyperloop(url: str, name: str = "", token: str = "") -> str:
     _workflows[wf_name] = conn
 
     devices = conn.snapshot.get("devices", [])
+    version = conn.snapshot.get("version", "unknown")
     return (
         f"Connected to Hyperloop workflow '{wf_name}' via {ws_url} "
-        f"({len(devices)} device(s))."
+        f"({len(devices)} device(s), version: {version})."
     )
 
 
diff --git a/Framework/Core/src/StatusWebSocketHandler.cxx b/Framework/Core/src/StatusWebSocketHandler.cxx
index 065a6f4b05b4a..46c3e5d686c1a 100644
--- a/Framework/Core/src/StatusWebSocketHandler.cxx
+++ b/Framework/Core/src/StatusWebSocketHandler.cxx
@@ -23,6 +23,7 @@
 #include "Framework/DeviceStateEnums.h"
 #include "Framework/LogParsingHelpers.h"
 #include "Framework/Signpost.h"
+#include "O2Version.h"
 #include <algorithm>
 #include <cstdio>
 #include <string>
@@ -286,7 +287,9 @@ void StatusWebSocketHandler::sendSnapshot()
 
   std::string out;
   out.reserve(512 + specs.size() * 128);
-  out += R"({"type":"snapshot","devices":[)";
+  out += R"({"type":"snapshot","version":")";
+  out += jsonEscape(o2::gitRevision());
+  out += R"(","devices":[)";
   for (size_t di = 0; di < specs.size(); ++di) {
     if (di > 0) {
       out += ',';