diff --git a/backend/app/services/builds.py b/backend/app/services/builds.py
index c46dae8..3b5ec8d 100644
--- a/backend/app/services/builds.py
+++ b/backend/app/services/builds.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import base64
+import html
 from typing import Dict, List
 
 import requests
@@ -26,11 +27,9 @@ def _sort_builds(builds: List[Dict]) -> List[Dict]:
     return sorted(builds, key=lambda build: build.get("number", 0), reverse=True)
 
 
-def normalize_build(build: Dict) -> Dict:
-    changes = build.get("changeSets", [])
+def _extract_commits(build: Dict) -> List[Dict]:
     commits = []
-
-    for cs in changes:
+    for cs in build.get("changeSets", []):
         for item in cs.get("items", []):
             commits.append(
                 {
@@ -39,14 +38,33 @@ def normalize_build(build: Dict) -> Dict:
                     "author": item.get("author", {}).get("fullName", "unknown"),
                 }
             )
+    return commits
+
+
+def _extract_trigger(build: Dict) -> str:
+    for action in build.get("actions", []):
+        for cause in action.get("causes", []):
+            description = cause.get("shortDescription")
+            if description:
+                return html.unescape(description).strip()
+    return ""
+
+
+def normalize_build(build: Dict) -> Dict:
+    commits = _extract_commits(build)
+    trigger = _extract_trigger(build)
+    status = (build.get("result") or "RUNNING").lower()
+    if build.get("building"):
+        status = "running"
 
     return {
         "number": build.get("number"),
-        "status": (build.get("result") or "RUNNING").lower(),
+        "status": status,
         "finished_at": build.get("timestamp"),
         "duration_seconds": build.get("duration", 0) // 1000,
         "url": build.get("url"),
         "commits": commits,
+        "trigger": trigger,
     }
 
 
@@ -63,15 +81,16 @@ def fetch_builds(limit: int = 5) -> List[Dict]:
         raise ValueError("JENKINS_JOB_NAME not configured")
     url = (
         f"{settings.jenkins_base_url}/job/{settings.jenkins_job_name}/api/json"
-        "?tree=builds[number,url,result,timestamp,duration,"
-        "changesets[items[commitId,msg,author[fullName]]]]"
+        "?tree=builds[number,url,result,timestamp,duration,building,"
+        "changeSets[items[commitId,msg,author[fullName]]],"
+        "actions[causes[shortDescription]]]"
     )
 
     resp = requests.get(url, headers=_auth_header(), timeout=5)
     resp.raise_for_status()
 
     builds = resp.json().get("builds", [])
-    return builds[:limit]
+    return _sort_builds(builds)[:limit]
 
 
 def build_history() -> Dict:
diff --git a/backend/tests/test_api.py b/backend/tests/test_api.py
index 28165b9..ceb448f 100644
--- a/backend/tests/test_api.py
+++ b/backend/tests/test_api.py
@@ -61,6 +61,15 @@ def test_build_history(monkeypatch):
             "timestamp": 1719992400000,
             "duration": 75000,
             "url": "http://jenkins.local/job/demo/205",
+            "actions": [
+                {
+                    "causes": [
+                        {
+                            "shortDescription": "Triggered by Merge pull request #37",
+                        }
+                    ]
+                }
+            ],
             "changeSets": [
                 {
                     "items": [
@@ -79,6 +88,7 @@ def test_build_history(monkeypatch):
             "timestamp": 1719988800000,
             "duration": 1500,
             "url": "http://jenkins.local/job/demo/204",
+            "actions": [],
             "changeSets": [],
         },
     ]
@@ -101,12 +111,14 @@ def test_build_history(monkeypatch):
     assert first["commits"] == [
         {"commit": "9ac3f91", "message": "Anade la API de Jenkins", "author": "Dev One"}
     ]
+    assert first["trigger"] == "Triggered by Merge pull request #37"
 
     second = builds[1]
     assert second["number"] == 204
     assert second["status"] == "running"
     assert second["duration_seconds"] == 1
     assert second["commits"] == []
+    assert second["trigger"] == ""
 
 
 def test_build_history_error_returns_empty(monkeypatch):
diff --git a/frontend/src/App.svelte b/frontend/src/App.svelte
index 12f227d..0fac69b 100644
--- a/frontend/src/App.svelte
+++ b/frontend/src/App.svelte
@@ -378,7 +378,9 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
                                     <span class="summary-title">#{build.number}</span>
 
                                     {#if build.commits.length === 0}
-                                        <span class="muted">Ejecución manual</span>
+                                        <span class="muted">
+                                            {build.trigger || 'Ejecución manual'}
+                                        </span>
                                     {:else}
                                         <span class="summary-commit">
                                             {build.commits[0].commit} · {build.commits[0].author}
@@ -401,6 +403,13 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
                                     </p>
                                 {/if}
 
+                                {#if build.trigger}
+                                    <p class="history-row">
+                                        <span>Disparo</span>
+                                        <span>{build.trigger}</span>
+                                    </p>
+                                {/if}
+
                                 <p class="history-row">
                                     <span>Duración</span>
                                     <span>{build.duration_seconds} s</span>
@@ -408,6 +417,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
                                 {#if build.status === 'failure'}
                                     <p class="history-message danger">Build fallida</p>
+                                {:else if build.status === 'running'}
+                                    <p class="history-message running">En curso</p>
                                 {:else}
                                     <p class="history-message success">Correcto</p>
                                 {/if}
diff --git a/frontend/src/styles/app.css b/frontend/src/styles/app.css
index 89e48c6..2eb6441 100644
--- a/frontend/src/styles/app.css
+++ b/frontend/src/styles/app.css
@@ -723,6 +723,11 @@ li {
     box-shadow: 0 0 8px rgba(248, 113, 113, 0.5);
 }
 
+.status-dot.running {
+    background: #facc15;
+    box-shadow: 0 0 8px rgba(250, 204, 21, 0.5);
+}
+
 .history-body {
     padding: 0.75rem 0.9rem 0.9rem;
     border-top: 1px solid rgba(255, 255, 255, 0.05);
@@ -758,6 +763,12 @@ li {
     color: #bbf7d0;
 }
 
+.history-message.running {
+    background: rgba(250, 204, 21, 0.16);
+    border-color: rgba(250, 204, 21, 0.5);
+    color: #fef9c3;
+}
+
 .history-item[open] {
     box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
 }
@@ -770,6 +781,10 @@ li {
     border-color: rgba(248, 113, 113, 0.35);
 }
 
+.history-item.running {
+    border-color: rgba(250, 204, 21, 0.35);
+}
+
 .chip.danger {
     background: rgba(248, 113, 113, 0.2);
     color: #fecdd3;