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+# MeshBay Hub — example configuration.
+#
+# Copy to /etc/meshbay/hub.toml and edit. The package deliberately does not
+# install a working config: it would either ship a placeholder secret that
+# somebody runs in production, or overwrite yours on upgrade.
+#
+# Read from the first of these that exists:
+#   /etc/meshbay/hub.toml          <- where a packaged hub looks
+#   ~/.config/meshbay/hub.toml     <- a development hub, run as yourself
+#
+# Every value below can also come from the environment, which is what the
+# systemd unit's EnvironmentFile (/etc/meshbay/hub.env) is for. Secrets belong
+# there rather than in an `Environment=` line: `systemctl cat` shows a unit to
+# any user on the machine.
+
+[hub]
+# This hub's identity, as members and nodes know it. Changing it after anyone
+# has joined invalidates what they trust.
+id = "hub.example.org"
+
+# Ed25519 private key. Generate with:
+#   meshbay-hub --help          (see the key subcommands)
+# The packaged service runs as `meshbay`, so:
+#   chown meshbay:meshbay /etc/meshbay/hub_private.pem && chmod 600 it
+private_key_path = "/etc/meshbay/hub_private.pem"
+
+# Accounts granted the admin role at creation. Everything else is set in the UI.
+admin_usernames = []
+
+[database]
+# PostgreSQL in production. The default without this key is an in-memory
+# SQLite, which is a test fixture and loses everything on restart.
+# Prefer MESHBAY_DATABASE_URL in /etc/meshbay/hub.env — it carries a password.
+url = "postgresql+asyncpg://meshbay:CHANGEME@localhost/meshbay_hub"
+
+[server]
+# Loopback: TLS is Caddy's job, and the hub should not be reachable directly.
+host    = "127.0.0.1"
+port    = 8000
+workers = 1
+
+[jwt]
+# The access token is not the session — the refresh token is, and the SPA
+# renews against it long before this runs out. What this bounds is a token
+# that leaks.
+access_token_ttl  = 14400      # 4 h
+refresh_token_ttl = 2592000    # 30 j
+
+[captcha]
+# reCAPTCHA v2 on registration and password reset, so no mail is ever sent
+# before a human has been seen. Absent, or either key empty, disables it
+# entirely — which is right for development and for a hub nobody can reach.
+# See docs/captcha.md.
+site_key   = ""
+secret_key = ""
+
+# Hostnames a solved captcha may have been solved on, checked against the one
+# `siteverify` reports — what Google observed, not what the client claims.
+#
+# Leave empty while the reCAPTCHA key does its own origin check: it is then
+# already done, one layer up. Set it when you turn that check off in the
+# reCAPTCHA console, and the two go together — turning the console check off
+# without setting this leaves no origin check anywhere.
+#
+# The desktop client is why it exists. Its interface ships inside the package
+# and is served from `app://meshbay`, so the hostname Google sees is not this
+# hub's and never can be; with the console check on, the widget shows
+# "Invalid domain for site key" and nothing client-side reaches that decision.
+# Add the client's own host only if you distribute it — it is the weak entry,
+# since any Electron application can claim the same scheme and host.
+#
+#   allowed_hosts = ["hub.example.org", "localhost", "meshbay"]
+allowed_hosts = []