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2026-08-16 22:47:26 -07:00
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# Authelia configuration for the BookStack MCP server.
#
# Merge these blocks into your existing configuration.yml. Tested against
# Authelia 4.39+, where ID Token claims changed (see the claims_policies note).
#
# Generate the client id and secret first:
#
# docker run --rm authelia/authelia:latest \
# authelia crypto rand --length 72 --charset rfc3986
#
# docker run --rm authelia/authelia:latest \
# authelia crypto hash generate pbkdf2 --variant sha512 \
# --random --random.length 72 --random.charset rfc3986
#
# The second command prints BOTH a "Random Password" and a "Digest".
# Digest -> client_secret below
# Random Password -> OIDC_CLIENT_SECRET in /etc/bookstack-mcp/env
# Do not put the digest in the MCP server's env file.
identity_providers:
oidc:
# -----------------------------------------------------------------------
# 1. Claims policy
#
# Authelia 4.39 stopped putting non-standard claims in the ID Token by
# default. The MCP server reads identity from the ID Token (because
# Authelia issues opaque access tokens), so groups and preferred_username
# have to be put back explicitly. Without this, MCP_REQUIRED_GROUPS will
# never match and every tool call gets denied.
# -----------------------------------------------------------------------
claims_policies:
mcp_claims:
id_token:
- 'groups'
- 'preferred_username'
- 'email'
- 'email_verified'
- 'name'
# -----------------------------------------------------------------------
# 2. Lifespan
#
# Authelia's default refresh_token lifespan is 90m. A claude.ai connector
# that sits idle longer than that has to be re-authorised by hand, which
# gets old fast. A long refresh token with a short access token is the
# right shape for a background integration.
# -----------------------------------------------------------------------
lifespans:
custom:
mcp:
access_token: '1h'
id_token: '1h'
refresh_token: '30d'
clients:
- client_id: 'REPLACE_WITH_GENERATED_ID'
client_name: 'BookStack MCP'
client_secret: 'REPLACE_WITH_PBKDF2_DIGEST'
public: false
# one_factor if you don't want to be prompted for 2FA on reconnect.
authorization_policy: 'two_factor'
claims_policy: 'mcp_claims'
lifespan: 'mcp'
# Claude re-authorises on token refresh. Explicit consent every time is
# painful; pre-configured remembers the grant for the given duration.
consent_mode: 'pre-configured'
pre_configured_consent_duration: '1 month'
require_pkce: true
pkce_challenge_method: 'S256'
redirect_uris:
- 'https://mcp.example.com/auth/callback'
# offline_access is what gets you a refresh token. Without it the
# connector dies when the access token expires.
scopes:
- 'openid'
- 'profile'
- 'email'
- 'groups'
- 'offline_access'
grant_types:
- 'authorization_code'
- 'refresh_token'
response_types:
- 'code'
# Authelia's default and what the spec requires. Leave it alone unless
# you see 'invalid_client' at the token endpoint, in which case try
# 'client_secret_post'.
token_endpoint_auth_method: 'client_secret_basic'
# Both are already the default; stated explicitly because they matter.
# 'none' means access tokens stay opaque rather than being JWTs, which
# is exactly why the MCP server needs OIDC_VERIFY_ID_TOKEN=true.
access_token_signed_response_alg: 'none'
userinfo_signed_response_alg: 'none'
# ---------------------------------------------------------------------------
# 3. Access control bypass <-- the one everybody misses
#
# If mcp.example.com is behind Authelia's forward-auth on your reverse proxy,
# Claude will be served an HTML login page instead of the MCP endpoint and the
# connector will fail with a parse error or a redirect loop. Claude cannot do
# cookie-based forward auth; the MCP server runs its own OAuth flow against
# Authelia instead. So the host must bypass forward-auth entirely.
#
# This is not a security hole: the MCP server refuses every unauthenticated
# request itself, and Authelia is still the thing deciding who gets a token.
# ---------------------------------------------------------------------------
access_control:
rules:
- domain: 'mcp.example.com'
policy: 'bypass'
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[Unit]
Description=BookStack MCP Server
Documentation=https://github.com/your/bookstack-mcp
After=network-online.target
Wants=network-online.target
[Service]
Type=exec
User=bookstack-mcp
Group=bookstack-mcp
EnvironmentFile=/etc/bookstack-mcp/env
WorkingDirectory=/opt/bookstack-mcp
ExecStart=/opt/bookstack-mcp/venv/bin/python -m bookstack_mcp
Restart=on-failure
RestartSec=5s
TimeoutStopSec=20s
# --- Hardening ---
# These all work in an unprivileged Proxmox/LXD container. If the service fails
# with a 226/NAMESPACE or 227/SECCOMP status on an older kernel, comment out the
# block below and it will start fine -- it only reduces defence in depth.
NoNewPrivileges=yes
PrivateTmp=yes
ProtectSystem=strict
ProtectHome=yes
ProtectControlGroups=yes
RestrictSUIDSGID=yes
RemoveIPC=yes
LockPersonality=yes
MemoryDenyWriteExecute=yes
RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
CapabilityBoundingSet=
AmbientCapabilities=
# Journald captures stdout/stderr: journalctl -u bookstack-mcp -f
StandardOutput=journal
StandardError=journal
SyslogIdentifier=bookstack-mcp
[Install]
WantedBy=multi-user.target
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#!/usr/bin/env bash
#
# Install the BookStack MCP server into a Debian/Ubuntu LXC container.
# Run as root, from inside the container, in the directory containing pyproject.toml:
#
# bash deploy/lxc/install.sh
#
set -euo pipefail
APP_DIR=/opt/bookstack-mcp
CONF_DIR=/etc/bookstack-mcp
SVC_USER=bookstack-mcp
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
log() { printf '\033[1;34m==>\033[0m %s\n' "$*"; }
die() { printf '\033[1;31mERROR:\033[0m %s\n' "$*" >&2; exit 1; }
# Find the project root. Normally this script lives at deploy/lxc/install.sh so
# the root is two levels up, but people often copy the tree around flat, so
# check the obvious candidates rather than assuming.
find_src() {
local candidate
for candidate in "$SCRIPT_DIR/../.." "$SCRIPT_DIR/.." "$SCRIPT_DIR" "$PWD"; do
if [[ -f "$candidate/pyproject.toml" && -d "$candidate/bookstack_mcp" ]]; then
(cd "$candidate" && pwd)
return 0
fi
done
return 1
}
if ! SRC_DIR="$(find_src)"; then
die "Can't find the project source (needs pyproject.toml and a bookstack_mcp/ directory).
Looked in: $SCRIPT_DIR/../.. , $SCRIPT_DIR/.. , $SCRIPT_DIR , $PWD
Get the whole project into the container, then run the script from its root:
git clone <your-repo> /opt/src/bookstack-mcp
cd /opt/src/bookstack-mcp
bash deploy/lxc/install.sh"
fi
[[ $EUID -eq 0 ]] || die "Run this as root (or with sudo)."
# The script copies SRC_DIR into APP_DIR, so they must not be the same place.
if [[ "$SRC_DIR" == "$APP_DIR" ]]; then
die "The source is $APP_DIR, which is also the install target.
Keep the source somewhere else and let the installer copy it in:
mkdir -p /opt/src && mv $APP_DIR /opt/src/bookstack-mcp
cd /opt/src/bookstack-mcp && bash deploy/lxc/install.sh"
fi
log "Installing from $SRC_DIR"
# --- Python version check -------------------------------------------------
# Needs 3.11+. Debian 12/13 and Ubuntu 24.04 are fine; Debian 11 and
# Ubuntu 22.04 ship something older and need a newer python installed first.
log "Checking Python version"
if ! command -v python3 >/dev/null; then
die "python3 not installed. Try: apt install -y python3 python3-venv"
fi
PY_OK=$(python3 -c 'import sys; print(1 if sys.version_info >= (3,11) else 0)')
if [[ "$PY_OK" != "1" ]]; then
die "Python $(python3 -V | cut -d' ' -f2) found, but 3.11+ is required.
Debian 12+/Ubuntu 24.04+ work out of the box. On older releases install a
newer python3 first (e.g. via deadsnakes) and re-run."
fi
# --- Dependencies ---------------------------------------------------------
log "Installing system packages"
export DEBIAN_FRONTEND=noninteractive
# A single broken third-party repo shouldn't abort the whole install, so the
# update is advisory; only the install itself is allowed to fail the script.
apt-get update -qq || log "apt update reported errors, continuing"
apt-get install -y -qq python3-venv python3-pip ca-certificates >/dev/null
# --- Service user ---------------------------------------------------------
if ! id -u "$SVC_USER" >/dev/null 2>&1; then
log "Creating service user $SVC_USER"
useradd --system --home-dir "$APP_DIR" --shell /usr/sbin/nologin "$SVC_USER"
fi
# --- Application ----------------------------------------------------------
log "Installing application to $APP_DIR"
mkdir -p "$APP_DIR"
rm -rf "$APP_DIR/bookstack_mcp"
cp -r "$SRC_DIR/bookstack_mcp" "$APP_DIR/"
cp "$SRC_DIR/pyproject.toml" "$APP_DIR/"
if [[ ! -d "$APP_DIR/venv" ]]; then
log "Creating virtualenv"
python3 -m venv "$APP_DIR/venv"
fi
log "Installing Python dependencies (this takes a minute)"
"$APP_DIR/venv/bin/pip" install --quiet --upgrade pip
"$APP_DIR/venv/bin/pip" install --quiet "$APP_DIR"
chown -R "$SVC_USER:$SVC_USER" "$APP_DIR"
# --- Configuration --------------------------------------------------------
mkdir -p "$CONF_DIR"
if [[ ! -f "$CONF_DIR/env" ]]; then
log "Creating $CONF_DIR/env from the template"
# systemd EnvironmentFile does not understand quotes or inline comments the
# way a shell does, so strip comments and blank lines out of the example.
grep -vE '^\s*(#|$)' "$SRC_DIR/.env.example" > "$CONF_DIR/env"
NEW_CONFIG=1
else
log "Keeping existing $CONF_DIR/env"
NEW_CONFIG=0
fi
chown root:"$SVC_USER" "$CONF_DIR/env"
chmod 640 "$CONF_DIR/env"
# --- systemd --------------------------------------------------------------
log "Installing systemd unit"
UNIT_SRC=""
for candidate in "$SRC_DIR/deploy/lxc/bookstack-mcp.service" "$SCRIPT_DIR/bookstack-mcp.service"; do
[[ -f "$candidate" ]] && { UNIT_SRC="$candidate"; break; }
done
[[ -n "$UNIT_SRC" ]] || die "Can't find bookstack-mcp.service"
install -m 644 "$UNIT_SRC" /etc/systemd/system/bookstack-mcp.service
systemctl daemon-reload
systemctl enable bookstack-mcp >/dev/null
echo
log "Install complete."
echo
if [[ "$NEW_CONFIG" == "1" ]]; then
cat <<EOF
Next steps:
1. Edit the config and fill in your BookStack details:
nano $CONF_DIR/env
At minimum: BOOKSTACK_URL, BOOKSTACK_TOKEN_ID, BOOKSTACK_TOKEN_SECRET.
Generate a Claude Code token with: openssl rand -hex 32
2. Start it:
systemctl start bookstack-mcp
systemctl status bookstack-mcp
journalctl -u bookstack-mcp -f
3. Verify locally (401 with a WWW-Authenticate header is the correct answer
when auth is enabled):
curl -i http://127.0.0.1:8080/mcp
EOF
else
echo " systemctl restart bookstack-mcp"
fi