diff --git a/extensions/README.md b/extensions/README.md
index e8f1617e..4c3f9d80 100644
--- a/extensions/README.md
+++ b/extensions/README.md
@@ -76,6 +76,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | Cleanup Extension | Post-implementation quality gate that reviews changes, fixes small issues (scout rule), creates tasks for medium issues, and generates analysis for large issues | [spec-kit-cleanup](https://github.com/dsrednicki/spec-kit-cleanup) |
 | Fleet Orchestrator | Orchestrate a full feature lifecycle with human-in-the-loop gates across all SpecKit phases | [spec-kit-fleet](https://github.com/sharathsatish/spec-kit-fleet) |
 | Jira Integration | Create Jira Epics, Stories, and Issues from spec-kit specifications and task breakdowns with configurable hierarchy and custom field support | [spec-kit-jira](https://github.com/mbachorik/spec-kit-jira) |
+| Project Health Check | Diagnose a Spec Kit project and report health issues across structure, agents, features, scripts, extensions, and git | [spec-kit-doctor](https://github.com/KhawarHabibKhan/spec-kit-doctor) |
 | Ralph Loop | Autonomous implementation loop using AI agent CLI | [spec-kit-ralph](https://github.com/Rubiss/spec-kit-ralph) |
 | 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) |
diff --git a/extensions/catalog.community.json b/extensions/catalog.community.json
index 759bd10d..f1e0a092 100644
--- a/extensions/catalog.community.json
+++ b/extensions/catalog.community.json
@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-03-09T00:00:00Z",
+  "updated_at": "2026-03-13T12:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "azure-devops": {
@@ -74,6 +74,37 @@
       "created_at": "2026-02-22T00:00:00Z",
       "updated_at": "2026-02-22T00:00:00Z"
     },
+    "doctor": {
+      "name": "Project Health Check",
+      "id": "doctor",
+      "description": "Diagnose a Spec Kit project and report health issues across structure, agents, features, scripts, extensions, and git.",
+      "author": "KhawarHabibKhan",
+      "version": "1.0.0",
+      "download_url": "https://github.com/KhawarHabibKhan/spec-kit-doctor/archive/refs/tags/v1.0.0.zip",
+      "repository": "https://github.com/KhawarHabibKhan/spec-kit-doctor",
+      "homepage": "https://github.com/KhawarHabibKhan/spec-kit-doctor",
+      "documentation": "https://github.com/KhawarHabibKhan/spec-kit-doctor/blob/main/README.md",
+      "changelog": "https://github.com/KhawarHabibKhan/spec-kit-doctor/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "requires": {
+        "speckit_version": ">=0.1.0"
+      },
+      "provides": {
+        "commands": 1,
+        "hooks": 0
+      },
+      "tags": [
+        "diagnostics",
+        "health-check",
+        "validation",
+        "project-structure"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-03-13T00:00:00Z",
+      "updated_at": "2026-03-13T00:00:00Z"
+    },
     "fleet": {
       "name": "Fleet Orchestrator",
       "id": "fleet",