diff --git a/server/src/integrations/fieldSchemas.ts b/server/src/integrations/fieldSchemas.ts
index dab9e74..9a29cdf 100644
--- a/server/src/integrations/fieldSchemas.ts
+++ b/server/src/integrations/fieldSchemas.ts
@@ -23,6 +23,10 @@ export const INTEGRATION_FIELDS: Partial<Record<IntegrationType, IntegrationFiel
     { key: "url", label: "Dockhand URL", secret: false, placeholder: "https://dockhand.example.lan" },
     { key: "token", label: "API token", secret: true, type: "password", placeholder: "dh_..." },
   ],
+  semaphore: [
+    { key: "url", label: "Semaphore URL", secret: false, placeholder: "https://semaphore.example.lan" },
+    { key: "token", label: "API token", secret: true, type: "password" },
+  ],
 };
 
 /** Fixed base URL per integration type, stored on the row for display/reference. */
diff --git a/server/src/integrations/registry.ts b/server/src/integrations/registry.ts
index 8d5d20f..d13b251 100644
--- a/server/src/integrations/registry.ts
+++ b/server/src/integrations/registry.ts
@@ -3,6 +3,7 @@ import type { IntegrationConfig } from "./types.js";
 import { createTailscaleAdapter } from "./tailscale/adapter.js";
 import { createGiteaAdapter } from "./gitea/adapter.js";
 import { createDockhandAdapter } from "./dockhand/adapter.js";
+import { createSemaphoreAdapter } from "./semaphore/adapter.js";
 
 export interface PingableAdapter {
   ping(): Promise<{ ok: boolean; latencyMs?: number; error?: string }>;
@@ -23,6 +24,8 @@ export function createIntegrationAdapter(type: IntegrationType, config: Integrat
       return createGiteaAdapter(config as any);
     case "dockhand":
       return createDockhandAdapter(config as any);
+    case "semaphore":
+      return createSemaphoreAdapter(config as any);
     default:
       throw new Error(`Integration type "${type}" is not implemented yet`);
   }
diff --git a/server/src/integrations/semaphore/adapter.ts b/server/src/integrations/semaphore/adapter.ts
new file mode 100644
index 0000000..ebe7b2e
--- /dev/null
+++ b/server/src/integrations/semaphore/adapter.ts
@@ -0,0 +1,144 @@
+/**
+ * Semaphore (Ansible Semaphore / Semaphore UI) adapter.
+ * Requires config: url, token
+ *
+ * API reference verified against the official spec
+ * (https://github.com/semaphoreui/semaphore/blob/develop/api-docs.yml) and
+ * source (db/Task.go, pkg/task_logger/task_logger.go) for the exact task
+ * status enum, since the swagger doc itself doesn't enumerate it.
+ */
+
+export interface SemaphoreConfig {
+  url: string;
+  token: string;
+}
+
+// waiting -> starting -> running -> (success | error | stopped)
+// waiting_confirmation/confirmed/rejected apply only to templates requiring approval.
+export type SemaphoreTaskStatus =
+  | "waiting"
+  | "starting"
+  | "waiting_confirmation"
+  | "confirmed"
+  | "rejected"
+  | "running"
+  | "stopping"
+  | "stopped"
+  | "success"
+  | "error";
+
+export interface SemaphoreTask {
+  id: number;
+  status: SemaphoreTaskStatus;
+  created: string | null;
+  start: string | null;
+  end: string | null;
+}
+
+export interface SemaphoreTemplate {
+  id: number;
+  projectId: number;
+  projectName: string;
+  name: string;
+  playbook: string;
+  lastTask: SemaphoreTask | null;
+}
+
+export interface SemaphoreAdapter {
+  ping(): Promise<{ ok: boolean; latencyMs?: number; error?: string }>;
+  listTemplatesWithStatus(): Promise<SemaphoreTemplate[]>;
+  runTemplate(projectId: number, templateId: number): Promise<SemaphoreTask>;
+}
+
+export function createSemaphoreAdapter(config: SemaphoreConfig): SemaphoreAdapter {
+  function base() {
+    return config.url.replace(/\/$/, "");
+  }
+
+  function headers() {
+    return {
+      Authorization: `Bearer ${config.token}`,
+      Accept: "application/json",
+      "Content-Type": "application/json",
+    };
+  }
+
+  async function api(method: string, path: string, body?: unknown): Promise<any> {
+    const res = await fetch(`${base()}/api${path}`, {
+      method,
+      headers: headers(),
+      body: body !== undefined ? JSON.stringify(body) : undefined,
+    });
+    if (res.status === 204) return null;
+    const text = await res.text();
+    let data: any = null;
+    try {
+      data = text ? JSON.parse(text) : null;
+    } catch {
+      // non-JSON error page
+    }
+    if (!res.ok) {
+      throw new Error((typeof data === "string" ? data : data?.error) || `Semaphore API error: HTTP ${res.status}`);
+    }
+    return data;
+  }
+
+  function mapTask(t: any): SemaphoreTask | null {
+    if (!t) return null;
+    return {
+      id: t.id,
+      status: t.status,
+      created: t.created ?? null,
+      start: t.start ?? null,
+      end: t.end ?? null,
+    };
+  }
+
+  async function listProjects(): Promise<{ id: number; name: string }[]> {
+    const data = await api("GET", "/projects");
+    return (Array.isArray(data) ? data : []).map((p: any) => ({ id: p.id, name: p.name }));
+  }
+
+  async function listTemplatesForProject(projectId: number, projectName: string): Promise<SemaphoreTemplate[]> {
+    const data = await api("GET", `/project/${projectId}/templates?sort=name&order=asc`);
+    return (Array.isArray(data) ? data : []).map((t: any) => ({
+      id: t.id,
+      projectId,
+      projectName,
+      name: t.name,
+      playbook: t.playbook,
+      lastTask: mapTask(t.last_task),
+    }));
+  }
+
+  async function listTemplatesWithStatus(): Promise<SemaphoreTemplate[]> {
+    const projects = await listProjects();
+    const perProject = await Promise.all(
+      projects.map(async (p) => {
+        try {
+          return await listTemplatesForProject(p.id, p.name);
+        } catch {
+          return [];
+        }
+      }),
+    );
+    return perProject.flat();
+  }
+
+  async function runTemplate(projectId: number, templateId: number): Promise<SemaphoreTask> {
+    const task = await api("POST", `/project/${projectId}/tasks`, { template_id: templateId });
+    return mapTask(task)!;
+  }
+
+  async function ping(): Promise<{ ok: boolean; latencyMs?: number; error?: string }> {
+    const start = Date.now();
+    try {
+      await api("GET", "/projects");
+      return { ok: true, latencyMs: Date.now() - start };
+    } catch (err) {
+      return { ok: false, error: err instanceof Error ? err.message : String(err) };
+    }
+  }
+
+  return { ping, listTemplatesWithStatus, runTemplate };
+}
diff --git a/server/src/routes/integrations.ts b/server/src/routes/integrations.ts
index f02e026..0455267 100644
--- a/server/src/routes/integrations.ts
+++ b/server/src/routes/integrations.ts
@@ -17,6 +17,7 @@ import { loadIntegrationConfig } from "../integrations/loadIntegration.js";
 import { createTailscaleAdapter } from "../integrations/tailscale/adapter.js";
 import { createGiteaAdapter } from "../integrations/gitea/adapter.js";
 import { createDockhandAdapter } from "../integrations/dockhand/adapter.js";
+import { createSemaphoreAdapter } from "../integrations/semaphore/adapter.js";
 import { asyncHandler } from "../utils/asyncHandler.js";
 
 export const integrationsRouter = Router();
@@ -469,3 +470,71 @@ for (const action of dockhandActions) {
     }),
   );
 }
+
+// ─── Semaphore ───────────────────────────────────────────────────────────────
+
+async function requireSemaphoreAdapter(req: Request, res: Response) {
+  const id = Number(req.params.id);
+  const loaded = await loadIntegrationConfig(id);
+  if (!loaded) {
+    res.status(404).json({ error: "not_found" });
+    return null;
+  }
+  if (loaded.integration.type !== "semaphore") {
+    res.status(400).json({ error: "wrong_type" });
+    return null;
+  }
+  if (!loaded.integration.enabled) {
+    res.status(400).json({ error: "integration_disabled" });
+    return null;
+  }
+  return { integration: loaded.integration, adapter: createSemaphoreAdapter(loaded.config as any) };
+}
+
+integrationsRouter.get("/:id/semaphore/templates", asyncHandler(async (req, res) => {
+  const found = await requireSemaphoreAdapter(req, res);
+  if (!found) return;
+
+  try {
+    const templates = await found.adapter.listTemplatesWithStatus();
+    res.json({
+      templates,
+      summary: {
+        total: templates.length,
+        failing: templates.filter((t) => t.lastTask?.status === "error").length,
+      },
+    });
+  } catch (err) {
+    res.status(502).json({ error: err instanceof Error ? err.message : String(err) });
+  }
+}));
+
+integrationsRouter.post(
+  "/:id/semaphore/projects/:projectId/templates/:templateId/run",
+  requireRole("operator"),
+  asyncHandler(async (req, res) => {
+    const found = await requireSemaphoreAdapter(req, res);
+    if (!found) return;
+
+    const projectId = Number(req.params.projectId);
+    const templateId = Number(req.params.templateId);
+    if (!Number.isInteger(projectId) || !Number.isInteger(templateId)) {
+      return res.status(400).json({ error: "invalid_id" });
+    }
+
+    try {
+      const task = await found.adapter.runTemplate(projectId, templateId);
+      await recordAudit({
+        actor: req.currentUser!,
+        category: "integration",
+        action: "run_template",
+        targetType: "semaphore_template",
+        targetId: templateId,
+        detail: { integrationId: found.integration.id, projectId, taskId: task.id },
+      });
+      res.status(201).json({ task });
+    } catch (err) {
+      res.status(502).json({ error: err instanceof Error ? err.message : String(err) });
+    }
+  }),
+);
diff --git a/web/src/api/client.ts b/web/src/api/client.ts
index f927122..5af7955 100644
--- a/web/src/api/client.ts
+++ b/web/src/api/client.ts
@@ -237,6 +237,40 @@ export interface DockhandContainersResponse {
   summary: { total: number; running: number };
 }
 
+export type SemaphoreTaskStatus =
+  | "waiting"
+  | "starting"
+  | "waiting_confirmation"
+  | "confirmed"
+  | "rejected"
+  | "running"
+  | "stopping"
+  | "stopped"
+  | "success"
+  | "error";
+
+export interface SemaphoreTask {
+  id: number;
+  status: SemaphoreTaskStatus;
+  created: string | null;
+  start: string | null;
+  end: string | null;
+}
+
+export interface SemaphoreTemplate {
+  id: number;
+  projectId: number;
+  projectName: string;
+  name: string;
+  playbook: string;
+  lastTask: SemaphoreTask | null;
+}
+
+export interface SemaphoreTemplatesResponse {
+  templates: SemaphoreTemplate[];
+  summary: { total: number; failing: number };
+}
+
 export class UnauthorizedError extends Error {}
 export class ForbiddenError extends Error {}
 
@@ -434,5 +468,14 @@ export const api = {
           { method: "POST" },
         ),
     },
+    semaphore: {
+      templates: (integrationId: number) =>
+        request<SemaphoreTemplatesResponse>(`/api/integrations/${integrationId}/semaphore/templates`),
+      run: (integrationId: number, projectId: number, templateId: number) =>
+        request<{ task: SemaphoreTask }>(
+          `/api/integrations/${integrationId}/semaphore/projects/${projectId}/templates/${templateId}/run`,
+          { method: "POST" },
+        ),
+    },
   },
 };
diff --git a/web/src/pages/Dashboard.tsx b/web/src/pages/Dashboard.tsx
index 795bc91..f2ee61c 100644
--- a/web/src/pages/Dashboard.tsx
+++ b/web/src/pages/Dashboard.tsx
@@ -21,11 +21,17 @@ interface DockhandSummary {
   total: number;
 }
 
+interface SemaphoreSummary {
+  total: number;
+  failing: number;
+}
+
 export default function Dashboard({ user }: { user: CurrentUser }) {
   const [integrations, setIntegrations] = useState<IntegrationSummary[] | null>(null);
   const [tailscaleSummary, setTailscaleSummary] = useState<TailscaleDevicesResponse["summary"] | null>(null);
   const [giteaSummary, setGiteaSummary] = useState<GiteaSummary | null>(null);
   const [dockhandSummary, setDockhandSummary] = useState<DockhandSummary | null>(null);
+  const [semaphoreSummary, setSemaphoreSummary] = useState<SemaphoreSummary | null>(null);
 
   useEffect(() => {
     api.integrations.list().then((res) => setIntegrations(res.integrations));
@@ -72,6 +78,18 @@ export default function Dashboard({ user }: { user: CurrentUser }) {
       .catch(() => setDockhandSummary(null));
   }, [integrations]);
 
+  useEffect(() => {
+    const semaphore = integrations?.find((i) => i.type === "semaphore" && i.enabled);
+    if (!semaphore) {
+      setSemaphoreSummary(null);
+      return;
+    }
+    api.integrations.semaphore
+      .templates(semaphore.id)
+      .then((res) => setSemaphoreSummary(res.summary))
+      .catch(() => setSemaphoreSummary(null));
+  }, [integrations]);
+
   return (
     <>
       <div className="row row-cards mb-3">
@@ -90,7 +108,8 @@ export default function Dashboard({ user }: { user: CurrentUser }) {
           const isLiveTailscale = type === "tailscale" && integration && tailscaleSummary;
           const isLiveGitea = type === "gitea" && integration && giteaSummary;
           const isLiveDockhand = type === "dockhand" && integration && dockhandSummary;
-          const isLive = isLiveTailscale || isLiveGitea || isLiveDockhand;
+          const isLiveSemaphore = type === "semaphore" && integration && semaphoreSummary;
+          const isLive = isLiveTailscale || isLiveGitea || isLiveDockhand || isLiveSemaphore;
 
           return (
             <div className="col-sm-6 col-lg-4" key={type}>
@@ -133,6 +152,14 @@ export default function Dashboard({ user }: { user: CurrentUser }) {
                       </div>
                       <div className="text-secondary">containers running</div>
                     </div>
+                  ) : isLiveSemaphore ? (
+                    <div className="mt-2">
+                      <div className="h3 mb-0">{semaphoreSummary!.total}</div>
+                      <div className="text-secondary">templates</div>
+                      {semaphoreSummary!.failing > 0 && (
+                        <div className="text-red small mt-1">{semaphoreSummary!.failing} last failed</div>
+                      )}
+                    </div>
                   ) : (
                     <div className="text-secondary mt-2">
                       {integration ? (
diff --git a/web/src/pages/Integrations.tsx b/web/src/pages/Integrations.tsx
index dae8451..d93b5f9 100644
--- a/web/src/pages/Integrations.tsx
+++ b/web/src/pages/Integrations.tsx
@@ -7,11 +7,38 @@ import {
   type GiteaRepo,
   type IntegrationSummary,
   type IntegrationType,
+  type SemaphoreTemplate,
+  type SemaphoreTemplatesResponse,
   type TailscaleDevice,
   type TailscaleDevicesResponse,
 } from "../api/client";
 import IntegrationForm from "../components/IntegrationForm";
 
+function semaphoreStatusBadge(template: SemaphoreTemplate) {
+  const status = template.lastTask?.status;
+  if (!status) return <span className="badge bg-secondary-lt text-secondary">Never run</span>;
+  switch (status) {
+    case "success":
+      return <span className="badge bg-green-lt text-green">Success</span>;
+    case "error":
+      return <span className="badge bg-red-lt text-red">Failed</span>;
+    case "stopped":
+      return <span className="badge bg-secondary-lt text-secondary">Stopped</span>;
+    case "rejected":
+      return <span className="badge bg-secondary-lt text-secondary">Rejected</span>;
+    case "waiting":
+    case "starting":
+    case "waiting_confirmation":
+    case "confirmed":
+      return <span className="badge bg-yellow-lt text-yellow">Queued</span>;
+    case "running":
+    case "stopping":
+      return <span className="badge bg-blue-lt text-blue">Running</span>;
+    default:
+      return <span className="badge bg-secondary-lt text-secondary">{status}</span>;
+  }
+}
+
 function containerStateBadge(state: string) {
   switch (state) {
     case "running":
@@ -85,6 +112,11 @@ export default function Integrations({ user }: { user: CurrentUser }) {
   const [loadingContainers, setLoadingContainers] = useState(false);
   const [actingOnContainer, setActingOnContainer] = useState<string | null>(null);
 
+  const [semaphoreData, setSemaphoreData] = useState<SemaphoreTemplatesResponse | null>(null);
+  const [semaphoreError, setSemaphoreError] = useState<string | null>(null);
+  const [loadingTemplates, setLoadingTemplates] = useState(false);
+  const [runningTemplate, setRunningTemplate] = useState<number | null>(null);
+
   function loadIntegrations() {
     api.integrations
       .list()
@@ -145,9 +177,24 @@ export default function Integrations({ user }: { user: CurrentUser }) {
     } else {
       setDockhandData(null);
     }
+    if (selected?.type === "semaphore" && selected.enabled && !managing) {
+      loadSemaphoreTemplates(selected.id);
+    } else {
+      setSemaphoreData(null);
+    }
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [selectedId, managing, integrations]);
 
+  function loadSemaphoreTemplates(id: number) {
+    setLoadingTemplates(true);
+    setSemaphoreError(null);
+    api.integrations.semaphore
+      .templates(id)
+      .then((res) => setSemaphoreData(res))
+      .catch((err) => setSemaphoreError(err instanceof Error ? err.message : String(err)))
+      .finally(() => setLoadingTemplates(false));
+  }
+
   async function toggleEnabled(i: IntegrationSummary) {
     try {
       await api.integrations.update(i.id, { enabled: !i.enabled });
@@ -218,6 +265,21 @@ export default function Integrations({ user }: { user: CurrentUser }) {
     }
   }
 
+  async function runTemplate(t: SemaphoreTemplate) {
+    if (!selectedId) return;
+    if (!confirm(`Run "${t.name}" now?`)) return;
+    setRunningTemplate(t.id);
+    setSemaphoreError(null);
+    try {
+      await api.integrations.semaphore.run(selectedId, t.projectId, t.id);
+      loadSemaphoreTemplates(selectedId);
+    } catch (err) {
+      setSemaphoreError(err instanceof Error ? err.message : String(err));
+    } finally {
+      setRunningTemplate(null);
+    }
+  }
+
   return (
     <>
       <div className="d-flex align-items-center mb-3">
@@ -547,6 +609,72 @@ export default function Integrations({ user }: { user: CurrentUser }) {
                     </table>
                   </div>
                 </div>
+              ) : selected?.type === "semaphore" ? (
+                <div className="card">
+                  <div className="card-header">
+                    <h3 className="card-title">
+                      Templates
+                      {semaphoreData && semaphoreData.summary.failing > 0 && (
+                        <span className="text-red fw-normal ms-2">{semaphoreData.summary.failing} failing</span>
+                      )}
+                    </h3>
+                    <div className="card-actions">
+                      <button
+                        className="btn btn-sm btn-outline-secondary"
+                        onClick={() => loadSemaphoreTemplates(selected.id)}
+                        disabled={loadingTemplates}
+                      >
+                        {loadingTemplates ? "Refreshing…" : "Refresh"}
+                      </button>
+                    </div>
+                  </div>
+                  {semaphoreError && <div className="alert alert-danger m-3 mb-0">{semaphoreError}</div>}
+                  <div className="table-responsive">
+                    <table className="table table-vcenter card-table">
+                      <thead>
+                        <tr>
+                          <th>Template</th>
+                          <th>Project</th>
+                          <th>Last run</th>
+                          <th>Status</th>
+                          {canEdit && <th className="w-1">Actions</th>}
+                        </tr>
+                      </thead>
+                      <tbody>
+                        {semaphoreData?.templates.map((t) => (
+                          <tr key={`${t.projectId}:${t.id}`}>
+                            <td>{t.name}</td>
+                            <td className="text-secondary">{t.projectName}</td>
+                            <td className="text-secondary">
+                              {t.lastTask
+                                ? new Date(t.lastTask.end ?? t.lastTask.start ?? t.lastTask.created ?? "").toLocaleString()
+                                : "—"}
+                            </td>
+                            <td>{semaphoreStatusBadge(t)}</td>
+                            {canEdit && (
+                              <td>
+                                <button
+                                  className="btn btn-sm btn-primary"
+                                  onClick={() => runTemplate(t)}
+                                  disabled={runningTemplate === t.id}
+                                >
+                                  {runningTemplate === t.id ? "Starting…" : "Run"}
+                                </button>
+                              </td>
+                            )}
+                          </tr>
+                        ))}
+                        {semaphoreData?.templates.length === 0 && (
+                          <tr>
+                            <td colSpan={canEdit ? 5 : 4} className="text-secondary text-center">
+                              No templates found across any project.
+                            </td>
+                          </tr>
+                        )}
+                      </tbody>
+                    </table>
+                  </div>
+                </div>
               ) : (
                 <div className="card">
                   <div className="card-body text-secondary">