diff --git a/extensions/README.md b/extensions/README.md
index da7c89b5..e58787c1 100644
--- a/extensions/README.md
+++ b/extensions/README.md
@@ -87,6 +87,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | Reconcile Extension | Reconcile implementation drift by surgically updating feature artifacts. | [spec-kit-reconcile](https://github.com/stn1slv/spec-kit-reconcile) |
 | Retrospective Extension | Post-implementation retrospective with spec adherence scoring, drift analysis, and human-gated spec updates | [spec-kit-retrospective](https://github.com/emi-dm/spec-kit-retrospective) |
 | Review Extension | Post-implementation comprehensive code review with specialized agents for code quality, comments, tests, error handling, type design, and simplification | [spec-kit-review](https://github.com/ismaelJimenez/spec-kit-review) |
+| SDD Utilities | Resume interrupted workflows, validate project health, and verify spec-to-task traceability | [speckit-utils](https://github.com/mvanhorn/speckit-utils) |
 | Spec Sync | Detect and resolve drift between specs and implementation. AI-assisted resolution with human approval | [spec-kit-sync](https://github.com/bgervin/spec-kit-sync) |
 | Understanding | Automated requirements quality analysis — 31 deterministic metrics against IEEE/ISO standards with experimental energy-based ambiguity detection | [understanding](https://github.com/Testimonial/understanding) |
 | V-Model Extension Pack | Enforces V-Model paired generation of development specs and test specs with full traceability | [spec-kit-v-model](https://github.com/leocamello/spec-kit-v-model) |
diff --git a/extensions/catalog.community.json b/extensions/catalog.community.json
index 00c29f6f..d613dfda 100644
--- a/extensions/catalog.community.json
+++ b/extensions/catalog.community.json
@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-03-18T18:53:31Z",
+  "updated_at": "2026-03-18T19:53:31Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "archive": {
@@ -452,6 +452,38 @@
       "created_at": "2026-03-06T00:00:00Z",
       "updated_at": "2026-03-06T00:00:00Z"
     },
+    "speckit-utils": {
+      "name": "SDD Utilities",
+      "id": "speckit-utils",
+      "description": "Resume interrupted workflows, validate project health, and verify spec-to-task traceability.",
+      "author": "mvanhorn",
+      "version": "1.0.0",
+      "download_url": "https://github.com/mvanhorn/speckit-utils/archive/refs/tags/v1.0.0.zip",
+      "repository": "https://github.com/mvanhorn/speckit-utils",
+      "homepage": "https://github.com/mvanhorn/speckit-utils",
+      "documentation": "https://github.com/mvanhorn/speckit-utils/blob/main/README.md",
+      "changelog": "https://github.com/mvanhorn/speckit-utils/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "requires": {
+        "speckit_version": ">=0.1.0"
+      },
+      "provides": {
+        "commands": 3,
+        "hooks": 2
+      },
+      "tags": [
+        "resume",
+        "doctor",
+        "validate",
+        "workflow",
+        "health-check"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-03-18T00:00:00Z",
+      "updated_at": "2026-03-18T00:00:00Z"
+    },
     "sync": {
       "name": "Spec Sync",
       "id": "sync",