diff --git a/src/psyc/cockpit/static/cockpit.css b/src/psyc/cockpit/static/cockpit.css
index 13730e9..4d4dfa7 100644
--- a/src/psyc/cockpit/static/cockpit.css
+++ b/src/psyc/cockpit/static/cockpit.css
@@ -1824,3 +1824,68 @@ body.wide #federation-network-graph { height: 720px; }
 .fn-remote-list code { font-size: 11px; color: var(--accent); }
 .fn-remote-list .muted { color: var(--muted); margin-left: 6px; font-size: 11px; }
 .fn-remote-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
+
+/* peer container topology — sanitized snapshot fetched from peer's
+   /federation/topology. Full-width row inside the detail card; networks
+   + containers in two columns, each row tagged with a small state dot. */
+.fn-topology-sec { grid-column: 1 / -1; }
+.fn-topology-meta {
+  display: flex; flex-wrap: wrap; gap: 6px 16px;
+  font-size: 11px; color: var(--muted); margin-bottom: 10px;
+  letter-spacing: 0.02em;
+}
+.fn-topology-meta code { font-size: 11px; color: var(--accent); }
+.fn-topology-cols {
+  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+  gap: 14px; margin: 4px 0 6px;
+}
+.fn-topology-h {
+  font-size: 11px; color: var(--muted);
+  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px;
+}
+.fn-topology-list { list-style: none; padding: 0; margin: 0; font-size: 12px; line-height: 1.55; }
+.fn-topology-list li {
+  padding: 4px 0; border-bottom: 1px dashed rgba(125,133,151,0.18);
+  display: block;
+}
+.fn-topology-list li:last-child { border-bottom: 0; }
+.fn-topology-list .muted { color: var(--muted); font-size: 11px; }
+
+/* small colored dot indicating container state */
+.fn-topo-state-dot {
+  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
+  margin-right: 8px; vertical-align: middle;
+  background: rgba(125,133,151,0.7);
+}
+.fn-topo-state-running { background: rgba(74,222,128,1); box-shadow: 0 0 4px rgba(74,222,128,0.55); }
+.fn-topo-state-exited  { background: rgba(125,133,151,0.7); }
+.fn-topo-state-paused  { background: rgba(251,191,36,1); }
+.fn-topo-state-restarting,
+.fn-topo-state-dead,
+.fn-topo-state-unhealthy { background: rgba(248,113,113,1); }
+
+.fn-topo-cname { color: var(--text); font-family: ui-monospace, Menlo, Consolas, monospace; }
+.fn-topo-netname { color: var(--text); font-family: ui-monospace, Menlo, Consolas, monospace; }
+.fn-topo-image {
+  font-family: ui-monospace, Menlo, Consolas, monospace;
+  font-size: 11px; color: var(--muted);
+  margin-left: 14px; word-break: break-all;
+}
+.fn-topo-int {
+  display: inline-block; font-size: 10px;
+  padding: 1px 5px; margin-left: 6px;
+  border-radius: 3px; color: var(--amber);
+  background: rgba(251,191,36,0.12);
+  border: 1px solid rgba(251,191,36,0.25);
+  text-transform: uppercase; letter-spacing: 0.05em;
+}
+.fn-topo-health {
+  display: inline-block; font-size: 10px;
+  padding: 1px 5px; margin-left: 6px;
+  border-radius: 3px; text-transform: uppercase; letter-spacing: 0.05em;
+  background: rgba(125,133,151,0.15); color: var(--muted);
+  border: 1px solid rgba(125,133,151,0.25);
+}
+.fn-topo-h-healthy   { color: var(--green); border-color: rgba(74,222,128,0.35); background: rgba(74,222,128,0.10); }
+.fn-topo-h-unhealthy { color: var(--red);   border-color: rgba(248,113,113,0.35); background: rgba(248,113,113,0.10); }
+.fn-topo-h-starting  { color: var(--amber); border-color: rgba(251,191,36,0.35); background: rgba(251,191,36,0.10); }
diff --git a/src/psyc/cockpit/static/federation_network.js b/src/psyc/cockpit/static/federation_network.js
index 2a7705a..8aded76 100644
--- a/src/psyc/cockpit/static/federation_network.js
+++ b/src/psyc/cockpit/static/federation_network.js
@@ -589,6 +589,20 @@
            </div>`
         : "";
 
+      // Placeholder for the peer's container topology. We render this for
+      // self too — the local node's /federation/topology fetches via the same
+      // path, just same-origin. Distance=2 transitive peers usually lack a
+      // direct domain in the network feed; skip them since there's nothing
+      // to fetch.
+      const topoHost = n.is_self ? "" : (n.domain || "");
+      const topoTarget = n.is_self ? "" : (n.domain || "");
+      const topoSec = (n.is_self || n.domain)
+        ? `<div class="fn-detail-sec fn-topology-sec" data-topo-fp="${esc(n.fp)}">
+             <h4>containers <span class="fn-remote-status fn-topo-status">fetching…</span></h4>
+             <div class="fn-topology-body">loading${topoHost ? ` from <code>${esc(topoHost)}</code>` : " local topology"}…</div>
+           </div>`
+        : "";
+
       const html = `
         <div class="td-head">
           <span class="td-kind ${kindCls}">${esc(kindLabel)}</span>
@@ -603,6 +617,7 @@
           ${quorum}
           ${translog}
           ${remote}
+          ${topoSec}
           ${actions}
         </div>
       `;
@@ -616,6 +631,14 @@
         fetchPeerSelfView(n.domain, n.fp);
       }
 
+      // Async-fetch the topology — sanitized container/network listing. For
+      // SELF we hit our own origin; for peers we hit https://<domain>/.
+      if (n.is_self) {
+        fetchPeerTopology("", n.fp);
+      } else if (n.domain) {
+        fetchPeerTopology(n.domain, n.fp);
+      }
+
       const close = detailEl.querySelector(".td-close");
       if (close) close.addEventListener("click", clearSelection);
 
@@ -737,6 +760,99 @@
       `;
     }
 
+    // ---------- peer container topology (cross-origin fetch) ------------
+    // Each psyc node exposes /federation/topology — a whitelist-only docker
+    // snapshot (container names + images + state + network names, nothing
+    // else). CORS=* so we can render every connected node's containers
+    // inside the federation network panel — operator gets a single pane of
+    // glass instead of having to SSH into each node.
+
+    function _topoStateClass(state) {
+      const s = String(state || "").toLowerCase();
+      if (s === "running") return "fn-topo-state-running";
+      if (s === "paused")  return "fn-topo-state-paused";
+      if (s === "restarting" || s === "dead") return "fn-topo-state-restarting";
+      // exited / created / removing / unknown → muted
+      return "fn-topo-state-exited";
+    }
+
+    function _truncImage(img, max) {
+      const s = String(img || "");
+      if (s.length <= max) return s;
+      // Keep the tail — repo/image:tag is more meaningful than the registry
+      // prefix when truncating.
+      return "…" + s.slice(-(max - 1));
+    }
+
+    async function fetchPeerTopology(domain, expectedFp) {
+      const sec = detailEl.querySelector(`.fn-topology-sec[data-topo-fp="${expectedFp}"]`);
+      if (!sec) return;
+      const statusEl = sec.querySelector(".fn-topo-status");
+      const bodyEl = sec.querySelector(".fn-topology-body");
+      // Empty domain → same-origin fetch for SELF. Otherwise cross-origin.
+      const base = domain ? `https://${domain}` : "";
+      let data = null;
+      try {
+        const r = await fetch(`${base}/federation/topology`, { mode: "cors", cache: "no-store" });
+        if (r.ok) data = await r.json();
+      } catch (e) { /* fall through */ }
+      // Detail panel may have moved on; bail if our section is gone.
+      if (!detailEl.contains(sec)) return;
+      if (!data) {
+        if (statusEl) statusEl.textContent = "unreachable";
+        bodyEl.innerHTML = `<span class="muted">couldn't reach ${esc(domain || "self")} — endpoint may be offline, blocking cross-origin, or this peer hasn't been upgraded yet.</span>`;
+        return;
+      }
+      const containers = Array.isArray(data.containers) ? data.containers : [];
+      const networks   = Array.isArray(data.networks)   ? data.networks   : [];
+      const host       = data.host_name || "—";
+      const gen        = String(data.generated_at || "").slice(0, 19).replace("T", " ");
+      const cCount     = Number(data.container_count || containers.length || 0);
+      const nCount     = Number(data.network_count   || networks.length   || 0);
+
+      // Empty-state — node has docker_view disabled or no containers visible.
+      if (!cCount && !nCount) {
+        if (statusEl) statusEl.textContent = "no data";
+        bodyEl.innerHTML = `<div class="fn-topology-meta">host <code>${esc(host)}</code> · ${cCount} containers · ${nCount} networks${gen ? ` · generated <code>${esc(gen)}</code>` : ""}</div><span class="muted">no containers reported — docker-socket-proxy may be down on this node.</span>`;
+        return;
+      }
+
+      const CONT_VISIBLE = 30, NET_VISIBLE = 10;
+      const contShown = containers.slice(0, CONT_VISIBLE);
+      const contHidden = Math.max(0, containers.length - CONT_VISIBLE);
+      const netShown = networks.slice(0, NET_VISIBLE);
+      const netHidden = Math.max(0, networks.length - NET_VISIBLE);
+
+      const netsList = netShown.length
+        ? `<ul class="fn-topology-list">${netShown.map(net => {
+            const drv = esc(net.driver || "—");
+            const ct = Number(net.container_count || 0);
+            const internalChip = net.internal ? ` <span class="fn-topo-int">internal</span>` : "";
+            return `<li><span class="fn-topo-netname">${esc(net.name || "?")}</span> <span class="muted">· ${drv} · ${ct} container${ct === 1 ? "" : "s"}</span>${internalChip}</li>`;
+          }).join("")}${netHidden ? `<li class="muted">+ ${netHidden} more</li>` : ""}</ul>`
+        : `<span class="muted">no networks reported</span>`;
+
+      const contList = contShown.length
+        ? `<ul class="fn-topology-list">${contShown.map(c => {
+            const dotCls = _topoStateClass(c.state);
+            const stateTxt = esc(c.state || "?");
+            const img = _truncImage(c.image, 30);
+            const healthPill = (c.health && c.health !== "—")
+              ? ` <span class="fn-topo-health fn-topo-h-${esc(c.health)}">${esc(c.health)}</span>` : "";
+            const svc = c.service ? ` <span class="muted">[${esc(c.service)}]</span>` : "";
+            return `<li><span class="fn-topo-state-dot ${dotCls}" title="${stateTxt}"></span><span class="fn-topo-cname">${esc(c.name || "?")}</span>${svc}${healthPill}<div class="fn-topo-image">${esc(img)}</div></li>`;
+          }).join("")}${contHidden ? `<li class="muted">+ ${contHidden} more</li>` : ""}</ul>`
+        : `<span class="muted">no containers reported</span>`;
+
+      if (statusEl) statusEl.textContent = domain ? "peer topology" : "local topology";
+      bodyEl.innerHTML = `
+        <div class="fn-topology-meta">host <code>${esc(host)}</code> · ${cCount} container${cCount === 1 ? "" : "s"} · ${nCount} network${nCount === 1 ? "" : "s"}${gen ? ` · generated <code>${esc(gen)}</code>` : ""}</div>
+        <div class="fn-topology-cols">
+          <div><div class="fn-topology-h">networks <span class="muted">(${networks.length})</span></div>${netsList}</div>
+          <div><div class="fn-topology-h">containers <span class="muted">(${containers.length})</span></div>${contList}</div>
+        </div>`;
+    }
+
     // ---------- idle animation ------------------------------------------
     let energyBudget = 40;
     function loop() {