diff --git a/dotfiles/.env b/dotfiles/.env
index 5a0187cd..213b32d3 100644
--- a/dotfiles/.env
+++ b/dotfiles/.env
@@ -93,4 +93,7 @@ Assigns the time that agentd should wait after a successful registration. See de
 
 
 ### ghorg
-GHORG_GITHUB_TOKEN
\ No newline at end of file
+GHORG_GITHUB_TOKEN
+
+export LEXICON_CLOUDFLARE_USERNAME="myusername@example.com"
+export LEXICON_CLOUDFLARE_TOKEN="cloudflare-api-token"
diff --git a/dotfiles/.local/share/bash-completion/completions/nb.bash b/dotfiles/.local/share/bash-completion/completions/nb.bash
new file mode 100644
index 00000000..d2c9d409
--- /dev/null
+++ b/dotfiles/.local/share/bash-completion/completions/nb.bash
@@ -0,0 +1,171 @@
+#!/usr/bin/env bash
+###############################################################################
+# __          _
+# \ \   _ __ | |__
+#  \ \ | '_ \| '_ \
+#  / / | | | | |_) |
+# /_/  |_| |_|_.__/
+#
+# [nb] Command line and local web note-taking, bookmarking, and archiving with
+# plain text data storage, encryption, filtering and search, pinning, #tagging,
+# Git-backed versioning and syncing, Pandoc-backed conversion, global and local
+# notebooks, customizable color themes, [[wiki-style linking]], plugins, and
+# more in a single portable, user-friendly script.
+#
+# https://github.com/xwmx/nb
+###############################################################################
+
+_nb_subcommands() {
+  # _nb_cache_completions()
+  #
+  # Usage:
+  #   _nb_cache_completions <path>
+  #
+  # Description:
+  #   Cache completions for `nb`. Generating completions can be slow and
+  #   native shell caching doesn't appear to help.
+  _nb_cache_completions() {
+    local _cache_path="${1:-}"
+
+    [[ -z "${_cache_path:-}" ]] && return 0
+
+    # Remove outdated cache files.
+
+    local _base_cache_path="${_cache_path%-*}"
+
+    local __suffix=
+    for   __suffix in "zsh" "v1"
+    do
+      if [[ -e "${_base_cache_path:?}-${__suffix:?}" ]]
+      then
+        rm -f  "${_base_cache_path:?}-${__suffix:?}"
+      fi
+    done
+
+    # Rebuild completion cache.
+
+    local _commands=()
+    IFS=$'\n' _commands=($(nb subcommands))
+
+    local _notebooks=()
+    IFS=$'\n' _notebooks=($(nb notebooks --names --no-color --unarchived))
+
+    local _completions=()
+    IFS=$'\n' _completions=(${_commands[@]})
+
+    local _commands_cached=
+    local _notebooks_cached=
+
+    if [[ -e "${_cache_path}"       ]]
+    then
+      local _counter=0
+
+      while IFS= read -r __line
+      do
+        _counter=$((_counter+1))
+
+        if [[   "${_counter}" == 1  ]]
+        then
+          _commands_cached="${__line}"
+        elif [[ "${_counter}" == 2  ]]
+        then
+          _notebooks_cached="${__line}"
+        else
+          break
+        fi
+      done < "${_cache_path}"
+    fi
+
+    if [[ "${_commands_cached}"  != "${_commands[*]:-}"   ]] ||
+       [[ "${_notebooks_cached}" != "${_notebooks[*]:-}"  ]]
+    then
+      # Construct <notebook>:<subcommand> completions.
+      local __notebook=
+      for   __notebook in "${_notebooks[@]}"
+      do
+        local __command=
+        for   __command in "${_commands[@]}"
+        do
+          if [[ -n "${__notebook:-}"  ]] &&
+             [[ -n "${__command:-}"   ]]
+          then
+            _completions+=("${__notebook}:${__command}")
+          fi
+        done
+      done
+
+      local _directory_path=
+      _directory_path="$(dirname "${_cache_path}")"
+
+      mkdir -p "${_directory_path}"
+
+      if [[ -f "${_cache_path:?}" ]]
+      then
+        rm -f "${_cache_path:?}"
+      fi
+
+      touch "${_cache_path:?}"
+
+      {
+        (IFS=$' '; printf "%s\\n" "${_commands[*]}")
+        (IFS=$' '; printf "%s\\n" "${_notebooks[*]}")
+        printf "%s\\n" "${_completions[@]}"
+      } >> "${_cache_path}"
+    fi
+  }
+
+  local _nb_dir=
+  _nb_dir="$(nb env | grep 'NB_DIR' | cut -d = -f 2)"
+
+  if [[ -z "${_nb_dir:?}" ]] ||
+     [[ ! -e "${_nb_dir}" ]]
+  then
+    return 0
+  elif [[ -L "${_nb_dir}" ]]
+  then
+    if hash "realpath" 2>/dev/null
+    then
+      _nb_dir="$(realpath "${_nb_dir}")"
+    else
+      _nb_dir="$(readlink "${_nb_dir}")"
+    fi
+  fi
+
+  if [[ ! -d "${_nb_dir}" ]]
+  then
+    return 0
+  fi
+
+  local _cache_path="${_nb_dir:?}/.cache/nb-completion-cache-v2"
+  local _completions_cached=()
+
+  if [[ ! -e "${_cache_path}"   ]]
+  then
+    _nb_cache_completions "${_cache_path}"
+  fi
+
+  if [[ -e "${_cache_path}"     ]]
+  then
+    local _counter=0
+
+    local              __line=
+    while IFS= read -r __line
+    do
+      _counter=$((_counter+1))
+
+      if [[ "${_counter}" -gt 2 ]]
+      then
+        _completions_cached+=("${__line}")
+      fi
+    done < "${_cache_path}"
+
+    (_nb_cache_completions "${_cache_path}" &)
+  fi
+
+  local _current="${COMP_WORDS[COMP_CWORD]}"
+  COMPREPLY=()
+
+  COMPREPLY=($(compgen -W "${_completions_cached[*]}" -- "${_current}"))
+}
+
+complete -F _nb_subcommands nb