diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 65210ffd..02be8418 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -12,6 +12,19 @@ on:
       - '/readme.md'
 
 jobs:
+  commit-emails:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Check commits for noreply addresses
+      env:
+        BASE_SHA: ${{ github.event.pull_request.base.sha }}
+        HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+      run: sh ./ci/check-commit-emails.sh
   lint:
     runs-on: ubuntu-latest
     strategy:
diff --git a/AGENTS.md b/AGENTS.md
index fb175392..32b1820d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -14,6 +14,8 @@ Your code will be reviewed by a time-pressed human. Pull requests that do not fo
 
 ## Patch contents
 
+- All listed commit authors and co-authors must be human and their git email addresses must be monitored. Do not use `noreply` email addresses.
+
 - CRITICAL: your patch must _ONLY_ make changes to relevant files and lines. Pull requests that change formatting on unrelated lines or add cruft to the repository will be rejected without review.
 
 - CRITICAL: your first pull request _MUST_ be FEWER than 50 lines of code. Once a pull request has been merged, _SUBSEQUENT_ pull requests may be up to 100 lines of code. If it is not possible to fix the issue within these limits, choose a different issue.
diff --git a/ci/check-commit-emails.sh b/ci/check-commit-emails.sh
new file mode 100755
index 00000000..1b87b388
--- /dev/null
+++ b/ci/check-commit-emails.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+
+authors=$(git log --format='%H%x09%an%x09%ae' "$BASE_SHA..$HEAD_SHA")
+coauthors=$(git log --format='%H%x09%(trailers:key=Co-authored-by)' "$BASE_SHA..$HEAD_SHA")
+bad_authors=$(printf '%s\n' "$authors" | grep -iE 'noreply' | grep -ivE 'dependabot(\[bot\])?' || true)
+bad_coauthors=$(printf '%s\n' "$coauthors" | grep -iE 'noreply' || true)
+if [ -n "$bad_authors$bad_coauthors" ]; then
+    printf '%s\n%s\n' "$bad_authors" "$bad_coauthors"
+    echo "'noreply' address found in patch. Please provide real contact details or ask a maintainer to adopt your commits."
+    exit 1
+fi
diff --git a/contributing.md b/contributing.md
index b4945a77..8c1224a9 100644
--- a/contributing.md
+++ b/contributing.md
@@ -22,7 +22,7 @@ Tridactyl is very lucky to have a wide base of contributors, 30 at the time of w
 -   You could work on some feature that you really want to see in Tridactyl that we haven't even thought of yet.
 -   Our build process is a bit convoluted, but [excmds.ts][excmds] is probably where you want to start. Most of the business happens there.
 -   We use TypeDoc to produce the `:help` page. Look at the other functions in [excmds.ts][excmds] to get an idea of how to use it; if your function is not supposed to called from the command line, then please add `/** @hidden */` above it to prevent it being shown on the help page.
--   Our pre-commit hook runs prettier to format your code. Please don't circumvent it.
+-   Email addresses mentioned in commits must be monitored. Do not use `noreply` addresses. If you have a good reason why you cannot provide a monitored email address, you can ask a maintainer to adopt your commits under their email address.
 
 If you are making a substantial or potentially controversial change, your first port of call should be to stop by and chat to us on [Matrix][matrix] or file an issue to discuss what you would like to change. We really don't want you to waste time on a pull request (GitHub jargon for a contribution) that has no chance of being merged; that said, we are probably happy to gate even the most controversial changes behind an option.