diff --git a/.autogen/autogen.sh b/.autogen/autogen.sh
new file mode 100755
index 000000000..1ea71ff00
--- /dev/null
+++ b/.autogen/autogen.sh
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+# BEARER_TOKEN=
+# CAMPAIGN_ID=
+# GITHUB_TOKEN=
+# HEAD='acid-chicken:patch-autogen'
+# REPO='syuilo/misskey'
+test "$(curl -LSs -w '\n' -- "https://api.github.com/repos/$REPO/pulls?access_token=$GITHUB_TOKEN" | jq -r '.[].head.label' | grep $HEAD)" && exit 1
+cd "$(dirname $0)/.." && \
+touch null.cache && \
+rm *.cache && \
+git checkout master && \
+git pull origin master && \
+git pull upstream master && \
+git stash && \
+git rebase -f upstream/master && \
+git branch patch-autogen && \
+git checkout patch-autogen && \
+git reset --hard HEAD || \
+exit 1
+touch patreon.md.cache && \
+rm patreon.md.cache && \
+echo '<!-- PATREON_START -->' > patreon.md.cache && \
+URL="https://www.patreon.com/api/oauth2/v2/campaigns/$CAMPAIGN_ID/members?include=currently_entitled_tiers,user&fields%5Btier%5D=title&fields%5Buser%5D=full_name,thumb_url,url,hide_pledges"
+while :
+ do
+  touch patreon.raw.cache && \
+  rm patreon.raw.cache && \
+  curl -LSs -w '\n' -H "Authorization: Bearer $BEARER_TOKEN" -- $URL > patreon.raw.cache && \
+  touch patreon.cache && \
+  rm patreon.cache && \
+  cat patreon.raw.cache | \
+  jq -r '(.data|map(select(.relationships.currently_entitled_tiers.data[]))|map(.relationships.user.data.id))as$data|.included|map(select(.attributes.hide_pledges==false))|map(select(.id as$id|$data|contains([$id])))|map(.attributes|[.full_name,.thumb_url,.url]|@tsv)|.[]|@text' >> patreon.cache && \
+  echo '<table><tr>' >> patreon.md.cache && \
+  cat patreon.cache | \
+  awk -F'\t' '{print $2,$1}' | \
+  sed -e 's/ /\\" alt=\\"/' | \
+  xargs -I% echo '<td><img src="%"></td>' >> patreon.md.cache && \
+  echo '</tr><tr>' >> patreon.md.cache && \
+  cat patreon.cache | \
+  awk -F'\t' '{print $3,$1}' | \
+  sed -e 's/ /\\">/' | \
+  xargs -I% echo '<td><a href="%</a></td>' >> patreon.md.cache && \
+  echo '</tr></table>' >> patreon.md.cache || \
+  exit 1
+  NEW_URL="$(cat patreon.raw.cache | jq -r '.links.next')"
+  test "$NEW_URL" = 'null' && \
+  break || \
+  URL="$NEW_URL"
+done
+IGNORE= && \
+echo -e "\n**Last updated:** $(date -uR | sed 's/\+0000/UTC/')\n<!-- PATREON_END -->" >> patreon.md.cache && \
+touch README.md && \
+touch .autogen/README.md && \
+rm .autogen/README.md && \
+mv README.md .autogen/README.md && \
+cat .autogen/README.md | while IFS= read LINE;
+ do
+  if [[ -z "$IGNORE" ]]
+   then
+    if [[ "$LINE" = '<!-- PATREON_START -->' ]]
+     then
+      IGNORE='PATREON_INSIDE'
+     else
+      echo "$LINE" >> README.md
+    fi
+   else
+    if [[ "$LINE" = '<!-- PATREON_END -->' ]]
+     then
+      IGNORE=
+      cat patreon.md.cache >> README.md
+    fi
+  fi
+done
+cat patreon.md.cache
+touch null.cache && \
+rm *.cache && \
+diff .autogen/README.md README.md > diff.cache
+cat diff.cache && \
+test 4 -lt $(cat diff.cache | wc -l) && \
+git add README.md && \
+git commit -m 'Update README.md [AUTOGEN]' && \
+git push -f origin patch-autogen && \
+curl -LSs -w '\n' -X POST -d '{"title":"[AUTOMATED] Update README.md","body":"*This pull request was created by a tool.*","head":"'$HEAD'","base":"master"}' -- "https://api.github.com/repos/$REPO/pulls?access_token=$GITHUB_TOKEN"
+git stash
+git checkout master
+git branch -D patch-autogen