diff --git a/README.md b/README.md
index 4567c8a0..cd1593c9 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,16 @@
 - Post management UI should use `/posts` (`@indiekit/endpoint-posts.mountPath`).
 - Do not set post-management `mountPath` to frontend routes like `/blog`, otherwise backend publishing can be shadowed by the public site.
 
+## Backend endpoints
+
+- Configured endpoint mount paths:
+- Posts management: `/posts`
+- Files: `/files`
+- Webmentions moderation + API: `/webmentions`
+- Conversations + API: `/conversations`
+- GitHub activity + API: `/github`
+- If IndieKit is reverse-proxied behind `/admin`, these become `/admin/posts`, `/admin/files`, etc.
+
 ## MongoDB
 
 - Preferred: set a full `MONGO_URL` (example: `mongodb://user:pass@host:27017/indiekit?authSource=admin`).
@@ -46,4 +56,9 @@
 - `GH_CONTENT_TOKEN`: token for content repo (`blog`), used by `@indiekit/store-github`.
 - `GH_ACTIVITY_TOKEN`: token for GitHub dashboard/activity endpoint, used by `@rmdes/indiekit-endpoint-github`.
 - `GITHUB_USERNAME`: GitHub user/owner name.
-- Backward compatibility: if `GH_CONTENT_TOKEN` or `GH_ACTIVITY_TOKEN` are not set, config falls back to `GITHUB_TOKEN`.
\ No newline at end of file
+- Backward compatibility: if `GH_CONTENT_TOKEN` or `GH_ACTIVITY_TOKEN` are not set, config falls back to `GITHUB_TOKEN`.
+
+## Startup script
+
+- `start.sh` is intentionally ignored by Git (`.gitignore`) so server secrets are not committed.
+- Use `start.example.sh` as the tracked template and keep real credentials in environment variables (or `.env` on the server).
\ No newline at end of file
diff --git a/custom-server.js b/custom-server.js
index b8f4fc2f..d9a64270 100644
--- a/custom-server.js
+++ b/custom-server.js
@@ -1,2 +1,15 @@
-require('dotenv').config();
-require('indiekit').serve();
+require("dotenv/config");
+const { spawn } = require("child_process");
+
+const args = [
+	require.resolve("@indiekit/indiekit/bin/cli.js"),
+	"serve",
+	"--config",
+	"indiekit.config.mjs",
+];
+
+const child = spawn(process.execPath, args, { stdio: "inherit" });
+
+child.on("exit", (code) => {
+	process.exit(code ?? 1);
+});
diff --git a/indiekit.config.mjs b/indiekit.config.mjs
index 532f6848..09ac281e 100644
--- a/indiekit.config.mjs
+++ b/indiekit.config.mjs
@@ -27,6 +27,18 @@ const githubContentToken =
   process.env.GH_CONTENT_TOKEN || process.env.GITHUB_TOKEN;
 const githubActivityToken =
   process.env.GH_ACTIVITY_TOKEN || process.env.GITHUB_TOKEN;
+const publicationBaseUrl = (
+  process.env.PUBLICATION_URL || "https://blog.giersig.eu"
+).replace(/\/+$/, "");
+
+let webmentionDomain = process.env.WEBMENTION_IO_DOMAIN;
+if (!webmentionDomain) {
+  try {
+    webmentionDomain = new URL(publicationBaseUrl).hostname;
+  } catch {
+    webmentionDomain = "blog.giersig.eu";
+  }
+}
 
 export default {
   debug: "indiekit:*",
@@ -35,55 +47,55 @@ export default {
     mongodbUrl: mongoUrl,
   },
   publication: {
-    me: "https://blog.giersig.eu",
+    me: publicationBaseUrl,
     postTypes: {
       article: {
         name: "Artikel",
         post: {
           path: "content/articles/{slug}.md",
-          url: "https://blog.giersig.eu/articles/{slug}/",
+          url: `${publicationBaseUrl}/articles/{slug}/`,
         },
       },
       note: {
         name: "Notiz",
         post: {
           path: "content/notes/{slug}.md",
-          url: "https://blog.giersig.eu/notes/{slug}/",
+          url: `${publicationBaseUrl}/notes/{slug}/`,
         },
       },
       bookmark: {
         name: "Lesezeichen",
         post: {
           path: "content/bookmarks/{slug}.md",
-          url: "https://blog.giersig.eu/bookmarks/{slug}/",
+          url: `${publicationBaseUrl}/bookmarks/{slug}/`,
         },
       },
       like: {
         name: "Like",
         post: {
           path: "content/likes/{slug}.md",
-          url: "https://blog.giersig.eu/likes/{slug}/",
+          url: `${publicationBaseUrl}/likes/{slug}/`,
         },
       },
       photo: {
         name: "Foto",
         post: {
           path: "content/photos/{slug}.md",
-          url: "https://blog.giersig.eu/photos/{slug}/",
+          url: `${publicationBaseUrl}/photos/{slug}/`,
         },
       },
       reply: {
         name: "Antwort",
         post: {
           path: "content/replies/{slug}.md",
-          url: "https://blog.giersig.eu/replies/{slug}/",
+          url: `${publicationBaseUrl}/replies/{slug}/`,
         },
       },
       page: {
         name: "Seite",
         post: {
           path: "content/pages/{slug}.md",
-          url: "https://blog.giersig.eu/{slug}/",
+          url: `${publicationBaseUrl}/{slug}/`,
         },
       },
     },
@@ -113,6 +125,7 @@ export default {
   },
   "@rmdes/indiekit-endpoint-webmention-io": {
     token: process.env.WEBMENTION_IO_TOKEN,
+    domain: webmentionDomain,
   },
   "@rmdes/indiekit-endpoint-conversations": {
     mountPath: "/conversations",
diff --git a/start.example.sh b/start.example.sh
new file mode 100644
index 00000000..b097585c
--- /dev/null
+++ b/start.example.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+set -eu
+
+cd /usr/local/indiekit
+
+# Optional: load environment from local .env file.
+if [ -f .env ]; then
+  set -a
+  . ./.env
+  set +a
+fi
+
+: "${SECRET:?SECRET is required}"
+: "${PASSWORD_SECRET:?PASSWORD_SECRET is required}"
+
+# Allow either full Mongo URL or decomposed credentials.
+if [ -z "${MONGO_URL:-}" ]; then
+  : "${MONGO_PASSWORD:?MONGO_PASSWORD is required when MONGO_URL is not set}"
+  export MONGO_USERNAME="${MONGO_USERNAME:-indiekit}"
+  export MONGO_AUTH_SOURCE="${MONGO_AUTH_SOURCE:-admin}"
+fi
+
+if [ -z "${GH_CONTENT_TOKEN:-}" ] && [ -z "${GITHUB_TOKEN:-}" ]; then
+  echo "GH_CONTENT_TOKEN or GITHUB_TOKEN is required" >&2
+  exit 1
+fi
+
+export NODE_ENV="${NODE_ENV:-production}"
+
+exec /usr/local/bin/node node_modules/@indiekit/indiekit/bin/cli.js serve --config indiekit.config.mjs