diff --git a/dashboard/observablehq.config.js b/dashboard/observablehq.config.js
index c467f7b..f10d757 100644
--- a/dashboard/observablehq.config.js
+++ b/dashboard/observablehq.config.js
@@ -34,7 +34,16 @@ export default {
     { name: "Inbox",         path: "/inbox" },
     { name: "Progress",      path: "/progress" },
     { name: "Token Cost",    path: "/token-cost" },
-    { name: "Services (TPSC)", path: "/tpsc" },
+    {
+      name: "Services",
+      collapsible: true,
+      open: false,
+      pages: [
+        { name: "Third Party", path: "/tpsc" },
+        { name: "First Party", path: "/services/first-party" },
+        { name: "Self Hosted", path: "/services/self-hosted" },
+      ],
+    },
     { name: "Todo",          path: "/todo" },
     { name: "Tools & Apps",  path: "/tools" },
     // ── Sections (alphabetical) ───────────────────────────────────────────────
diff --git a/dashboard/src/services/first-party.md b/dashboard/src/services/first-party.md
new file mode 100644
index 0000000..dbc7403
--- /dev/null
+++ b/dashboard/src/services/first-party.md
@@ -0,0 +1,49 @@
+---
+title: First Party Services
+---
+
+# First Party Services Catalog
+
+Services **coulomb is development-responsible for** (`development_type = first_party`),
+whether deployed to a cloud or self-hosted on coulomb infrastructure. The
+**Service Maturity Level** column tracks each service against the
+[Service DoM](/policy/service-dom) (1 · Core → 2 · Standard → 3 · Mature).
+
+```js
+import {API} from "../components/config.js";
+```
+
+```js
+const services = await fetch(`${API}/services/catalog?development_type=first_party`)
+  .then(r => r.ok ? r.json() : [])
+  .catch(() => []);
+const repos = await fetch(`${API}/repos/`)
+  .then(r => r.ok ? r.json() : [])
+  .catch(() => []);
+const repoById = new Map(repos.map(r => [r.id, r.slug]));
+```
+
+```js
+const LEVEL = {1: "1 · Core", 2: "2 · Standard", 3: "3 · Mature"};
+
+const rows = services.map(s => ({
+  Service: s.name,
+  Slug: s.slug,
+  Hosting: s.hosting_type === "self_hosted" ? "self-hosted" : "cloud-hosted",
+  "Maturity Level": s.maturity_level ? LEVEL[s.maturity_level] : "—",
+  "Dev Repo": s.first_party?.repo_id ? (repoById.get(s.first_party.repo_id) ?? "(unlinked)") : "—",
+  Domain: s.first_party?.owning_domain ?? "—",
+  Status: s.status,
+}));
+```
+
+```js
+display(services.length === 0
+  ? html`<div style="color:#64748b;padding:1rem;">No first-party services registered yet. Add one with
+      <code>POST /services/catalog</code> (<code>development_type: "first_party"</code>).</div>`
+  : Inputs.table(rows, {
+      columns: ["Service", "Hosting", "Maturity Level", "Dev Repo", "Domain", "Status"],
+      sort: "Service",
+      rows: 30,
+    }));
+```
diff --git a/dashboard/src/services/self-hosted.md b/dashboard/src/services/self-hosted.md
new file mode 100644
index 0000000..c7dc6eb
--- /dev/null
+++ b/dashboard/src/services/self-hosted.md
@@ -0,0 +1,48 @@
+---
+title: Self Hosted Services
+---
+
+# Self Hosted Services Catalog
+
+Services and webapps built on **third-party / open-source software** that coulomb
+**hosts and operates** as part of the three-helix infrastructure
+(`hosting_type = self_hosted`, `development_type = third_party`). coulomb runs
+these but is not development-responsible for them.
+
+> First-party services that coulomb also self-hosts (e.g. the State Hub itself)
+> are listed under [First Party](/services/first-party), classified by who develops
+> them.
+
+```js
+import {API} from "../components/config.js";
+```
+
+```js
+const services = await fetch(`${API}/services/catalog?hosting_type=self_hosted&development_type=third_party`)
+  .then(r => r.ok ? r.json() : [])
+  .catch(() => []);
+```
+
+```js
+const rows = services.map(s => ({
+  Service: s.name,
+  Slug: s.slug,
+  "Upstream OSS": s.self_hosted?.upstream_oss_project ?? s.owner_or_provider ?? "—",
+  "Helix Instance": s.self_hosted?.helix_instance ?? "—",
+  Host: s.self_hosted?.host_node ?? "—",
+  Runbook: s.self_hosted?.runbook_ref ?? "—",
+  Status: s.status,
+}));
+```
+
+```js
+display(services.length === 0
+  ? html`<div style="color:#64748b;padding:1rem;">No self-hosted third-party services registered yet. Add one with
+      <code>POST /services/catalog</code> (<code>hosting_type: "self_hosted"</code>,
+      <code>development_type: "third_party"</code>).</div>`
+  : Inputs.table(rows, {
+      columns: ["Service", "Upstream OSS", "Helix Instance", "Host", "Runbook", "Status"],
+      sort: "Service",
+      rows: 30,
+    }));
+```