diff --git a/README.md b/README.md
index 77c209b3b..6f0baf567 100644
--- a/README.md
+++ b/README.md
@@ -240,6 +240,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | Retro Extension | Sprint retrospective analysis with metrics, spec accuracy assessment, and improvement suggestions | `process` | Read+Write | [spec-kit-retro](https://github.com/arunt14/spec-kit-retro) |
 | Retrospective Extension | Post-implementation retrospective with spec adherence scoring, drift analysis, and human-gated spec updates | `docs` | Read+Write | [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 | `code` | Read-only | [spec-kit-review](https://github.com/ismaelJimenez/spec-kit-review) |
+| Ripple | Detect side effects that tests can't catch after implementation — delta-anchored analysis across 9 domain-agnostic categories | `code` | Read+Write | [spec-kit-ripple](https://github.com/chordpli/spec-kit-ripple) |
 | SDD Utilities | Resume interrupted workflows, validate project health, and verify spec-to-task traceability | `process` | Read+Write | [speckit-utils](https://github.com/mvanhorn/speckit-utils) |
 | Security Review | Comprehensive security audit of codebases using AI-powered DevSecOps analysis | `code` | Read-only | [spec-kit-security-review](https://github.com/DyanGalih/spec-kit-security-review) |
 | SFSpeckit | Enterprise Salesforce SDLC with 18 commands for the full SDD lifecycle. | `process` | Read+Write | [spec-kit-sf](https://github.com/ysumanth06/spec-kit-sf) |
diff --git a/extensions/catalog.community.json b/extensions/catalog.community.json
index b0fe0dc54..991949f1a 100644
--- a/extensions/catalog.community.json
+++ b/extensions/catalog.community.json
@@ -1688,6 +1688,38 @@
       "created_at": "2026-03-06T00:00:00Z",
       "updated_at": "2026-04-09T00:00:00Z"
     },
+    "ripple": {
+      "name": "Ripple",
+      "id": "ripple",
+      "description": "Detect side effects that tests can't catch after implementation — delta-anchored analysis across 9 domain-agnostic categories with fix-induced side effect detection",
+      "author": "chordpli",
+      "version": "1.0.0",
+      "download_url": "https://github.com/chordpli/spec-kit-ripple/archive/refs/tags/v1.0.0.zip",
+      "repository": "https://github.com/chordpli/spec-kit-ripple",
+      "homepage": "https://github.com/chordpli/spec-kit-ripple",
+      "documentation": "https://github.com/chordpli/spec-kit-ripple/blob/main/README.md",
+      "changelog": "https://github.com/chordpli/spec-kit-ripple/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "requires": {
+        "speckit_version": ">=0.2.0"
+      },
+      "provides": {
+        "commands": 3,
+        "hooks": 1
+      },
+      "tags": [
+        "side-effects",
+        "post-implementation",
+        "analysis",
+        "quality",
+        "risk-detection"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-04-20T00:00:00Z",
+      "updated_at": "2026-04-20T00:00:00Z"
+    },
     "scope": {
       "name": "Spec Scope",
       "id": "scope",