diff --git a/src/fgai/dashboard.py b/src/fgai/dashboard.py
index 0bbb4a4..01b21f1 100644
--- a/src/fgai/dashboard.py
+++ b/src/fgai/dashboard.py
@@ -85,6 +85,7 @@ async function refresh() {
   const a = data.anomaly_summary || {};
   const baseline = data.baseline || {};
   const threat = (data.capabilities || {}).threat_intel || {};
+  const mcp = (data.capabilities || {}).graylog_mcp || {};
   const configuration = data.configuration || {};
   document.getElementById('stamp').textContent = data.generated_at ? `Updated ${new Date(data.generated_at * 1000).toLocaleString()}` : 'Waiting for monitor data';
   document.getElementById('metrics').innerHTML = [
@@ -98,7 +99,7 @@ async function refresh() {
     capability('Baseline', baseline.enabled ? 'on' : 'warn', baseline.enabled ? `${baseline.sources_ready || 0} sources ready` : 'disabled'),
     capability('Ollama', llm.enabled && llm.status !== 'error' ? 'on' : 'warn', llm.enabled ? (llm.status || 'starting') : 'disabled'),
     capability('Threat Intel', threat.enabled && threat.configured ? 'on' : 'warn', threat.enabled ? `${threat.provider || 'unknown'}${threat.configured ? '' : ', key missing'}` : 'disabled'),
-    capability('Log source', configuration.log_source === 'graylog_mcp' ? 'warn' : 'on', configuration.log_source === 'graylog_mcp' ? 'Graylog MCP configured, connector pending' : 'local syslog')
+    capability('Graylog MCP', mcp.status === 'connected' ? 'on' : 'warn', configuration.log_source === 'graylog_mcp' ? (mcp.status || 'checking') : 'not selected')
   ].join('');
   document.getElementById('liveStatus').innerHTML = [
     `Log file: <code>${esc(data.log_path || '')}</code>`,
diff --git a/src/fgai/graylog_mcp.py b/src/fgai/graylog_mcp.py
new file mode 100644
index 0000000..d5b37ec
--- /dev/null
+++ b/src/fgai/graylog_mcp.py
@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+import base64
+import json
+from urllib import error, request
+
+
+class GraylogMcpClient:
+    """Small Streamable HTTP MCP client used for Graylog connection checks."""
+
+    def __init__(self, url: str, token: str, *, timeout: int = 15) -> None:
+        self.url = url.rstrip("/")
+        self.token = token
+        self.timeout = timeout
+        self.session_id: str | None = None
+
+    def _call(self, method: str, params: dict[str, object] | None = None, *, notification: bool = False) -> dict[str, object]:
+        payload: dict[str, object] = {"jsonrpc": "2.0", "method": method}
+        if not notification:
+            payload["id"] = 1
+        if params is not None:
+            payload["params"] = params
+        credentials = base64.b64encode(f"{self.token}:token".encode("utf-8")).decode("ascii")
+        headers = {
+            "Authorization": f"Basic {credentials}",
+            "Content-Type": "application/json",
+            "Accept": "application/json, text/event-stream",
+        }
+        if self.session_id:
+            headers["Mcp-Session-Id"] = self.session_id
+        req = request.Request(self.url, data=json.dumps(payload).encode("utf-8"), method="POST", headers=headers)
+        try:
+            with request.urlopen(req, timeout=self.timeout) as response:
+                self.session_id = response.headers.get("Mcp-Session-Id", self.session_id)
+                body = response.read().decode("utf-8")
+        except error.HTTPError as exc:
+            raise RuntimeError(f"http_{exc.code}") from exc
+        except Exception as exc:
+            raise RuntimeError(f"connection_error: {exc}") from exc
+        if notification:
+            return {}
+        if body.startswith("data:"):
+            body = next((line[5:].strip() for line in body.splitlines() if line.startswith("data:")), "")
+        try:
+            response_data = json.loads(body)
+        except json.JSONDecodeError as exc:
+            raise RuntimeError("invalid_mcp_response") from exc
+        if "error" in response_data:
+            raise RuntimeError(f"mcp_error: {response_data['error']}")
+        return response_data
+
+    def probe(self) -> dict[str, object]:
+        initialized = self._call(
+            "initialize",
+            {"protocolVersion": "2025-03-26", "capabilities": {}, "clientInfo": {"name": "fgAI", "version": "0.1"}},
+        )
+        self._call("notifications/initialized", notification=True)
+        tools = self._call("tools/list")
+        tool_list = tools.get("result", {}).get("tools", []) if isinstance(tools.get("result"), dict) else []
+        names = [str(item.get("name")) for item in tool_list if isinstance(item, dict) and item.get("name")]
+        version = initialized.get("result", {}).get("serverInfo", {}).get("version", "") if isinstance(initialized.get("result"), dict) else ""
+        return {"status": "connected", "tools": names, "server_version": version}
diff --git a/src/fgai/monitor.py b/src/fgai/monitor.py
index dfea679..66a7be5 100644
--- a/src/fgai/monitor.py
+++ b/src/fgai/monitor.py
@@ -7,6 +7,7 @@ from pathlib import Path
 from .anomaly import anomaly_summary, detect_source_anomalies
 from .baseline import BaselineStore
 from .config import ConfigStore
+from .graylog_mcp import GraylogMcpClient
 from .llm import ollama_dashboard_assessment
 from .logs import local_in_failures, read_events, summarize_events, top_field_values
 from .mitigation import parse_allowlist, suggest_block_candidates
@@ -34,6 +35,17 @@ def build_status(
     config_exists = bool(config_store and config_store.path.exists())
     runtime_values = config_store.read() if config_exists and config_store else {}
     runtime_config = config_store.public() if config_store else {}
+    mcp_status: dict[str, object] = {"status": "not_configured"}
+    if runtime_values.get("log_source") == "graylog_mcp":
+        url = str(runtime_values.get("graylog_mcp_url", ""))
+        token = str(runtime_values.get("graylog_mcp_token", ""))
+        if not url or not token:
+            mcp_status = {"status": "missing_configuration"}
+        else:
+            try:
+                mcp_status = GraylogMcpClient(url, token).probe()
+            except RuntimeError as exc:
+                mcp_status = {"status": "error", "error": str(exc)}
     intel_ips = sorted(
         {
             ip
@@ -68,7 +80,7 @@ def build_status(
         "summary": summarize_events(events),
         "anomaly_summary": anomaly_summary(anomalies),
         "baseline": {"enabled": bool(baseline), "sources_ready": len(profiles), "new_events_recorded": baseline_events},
-        "capabilities": {"threat_intel": threat_intel_status},
+        "capabilities": {"threat_intel": threat_intel_status, "graylog_mcp": mcp_status},
         "configuration": runtime_config,
         "diagnostics": {
             "top_source_ips": top_field_values(events, "srcip", limit=10),
diff --git a/tests/test_graylog_mcp.py b/tests/test_graylog_mcp.py
new file mode 100644
index 0000000..caeb949
--- /dev/null
+++ b/tests/test_graylog_mcp.py
@@ -0,0 +1,37 @@
+import json
+import unittest
+from unittest.mock import patch
+
+from fgai.graylog_mcp import GraylogMcpClient
+
+
+class _Response:
+    def __init__(self, body: dict[str, object], session: str = "session-1") -> None:
+        self.body = body
+        self.headers = {"Mcp-Session-Id": session}
+
+    def read(self) -> bytes:
+        return json.dumps(self.body).encode("utf-8")
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_args):
+        return False
+
+
+class GraylogMcpTests(unittest.TestCase):
+    def test_probe_initializes_and_lists_tools(self):
+        responses = iter([
+            _Response({"result": {"serverInfo": {"version": "7.1.6"}}}),
+            _Response({}),
+            _Response({"result": {"tools": [{"name": "search_messages"}, {"name": "aggregate_messages"}]}}),
+        ])
+        with patch("fgai.graylog_mcp.request.urlopen", side_effect=responses):
+            status = GraylogMcpClient("http://graylog/api/mcp", "raw-token").probe()
+        self.assertEqual(status["status"], "connected")
+        self.assertIn("search_messages", status["tools"])
+
+
+if __name__ == "__main__":
+    unittest.main()