diff --git a/scpt/delete-chat-records.zsh b/scpt/delete-chat-records.zsh
new file mode 100644
index 0000000..d832cb6
--- /dev/null
+++ b/scpt/delete-chat-records.zsh
@@ -0,0 +1,30 @@
+#!/bin/zsh
+
+set -e
+
+cb=ai.syui.log
+cl=( $cb.chat $cb.chat.comment $cb.chat.lang )
+f=~/.config/syui/ai/bot/token.json
+
+default_collection="ai.syui.log.chat.comment"
+default_pds="bsky.social"
+default_did=`cat $f|jq -r .did`
+default_token=`cat $f|jq -r .accessJwt`
+default_refresh=`cat $f|jq -r .refreshJwt`
+curl -sL -X POST -H "Content-Type: application/json" -H "Authorization: Bearer $default_refresh" https://$default_pds/xrpc/com.atproto.server.refreshSession >! $f
+default_token=`cat $f|jq -r .accessJwt`
+collection=${1:-$default_collection}
+pds=${2:-$default_pds}
+did=${3:-$default_did}
+token=${4:-$default_token}
+req=com.atproto.repo.deleteRecord
+url=https://$pds/xrpc/$req
+for i in $cl; do
+	echo $i
+	rkeys=($(curl -sL "https://$default_pds/xrpc/com.atproto.repo.listRecords?repo=$did&collection=$i&limit=100"|jq -r ".records[]?.uri"|cut -d '/' -f 5))
+	for rkey in "${rkeys[@]}"; do
+		echo $rkey
+		json="{\"collection\":\"$i\", \"rkey\":\"$rkey\", \"repo\":\"$did\"}"
+		curl -sL -X POST -H "Content-Type: application/json" -H "Authorization: Bearer $token" -d "$json" $url
+	done
+done