diff --git a/.changeset/comment-moderation.md b/.changeset/comment-moderation.md
new file mode 100644
index 000000000..9da54a679
--- /dev/null
+++ b/.changeset/comment-moderation.md
@@ -0,0 +1,5 @@
+---
+"@bradygaster/squad-cli": patch
+---
+
+Add automated comment spam protection using GitHub's official ai-moderator action
diff --git a/.github/workflows/squad-comment-moderation.yml b/.github/workflows/squad-comment-moderation.yml
new file mode 100644
index 000000000..ff22bb7c0
--- /dev/null
+++ b/.github/workflows/squad-comment-moderation.yml
@@ -0,0 +1,32 @@
+name: Comment Moderation
+
+on:
+  issues:
+    types: [opened]
+  issue_comment:
+    types: [created]
+  pull_request_review_comment:
+    types: [created]
+
+permissions:
+  issues: write
+  pull-requests: write
+  models: read
+  contents: read
+
+jobs:
+  moderate:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    # Skip bot comments
+    if: github.event.sender.type != 'Bot'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: github/ai-moderator@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          spam-label: 'spam'
+          minimize-detected-comments: true
+          enable-spam-detection: true
+          enable-link-spam-detection: true
+          enable-ai-detection: false
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e3d7ee08d..a9b8aaf8e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -287,6 +287,14 @@ GitHub Actions runs on every push:
 
 All checks must pass before merge.
 
+### Comment Moderation
+
+This repo uses [GitHub's official ai-moderator action](https://github.com/github/ai-moderator) to automatically detect and minimize spam comments on issues and PRs. The action catches spam, link spam, and other disruptive content — legitimate first-time contributors are not affected. Note: the moderation workflow does not block users; it only minimizes their comments and applies a `spam` label.
+
+If your comment is mistakenly hidden, reply to the thread or open a new issue and a maintainer will restore it promptly.
+
+> **Scope note:** This comment moderation workflow addresses #751.
+
 ## Common Tasks
 
 ### Add a CLI Command