Webmentiond can be configured through a handful of flags and environment variables. This page will give you an overview of all of them:

Server settings

--addr ADDR (flag)

This is the network address the server should listen to for requests.


--metrics-addr ADDR (flag)

This is the network address the server should listen to for requests exposing metrics in a Prometheus-compatible format.

If this flag is not set then no metrics are exposed. If it equals the value for the --addr flag then the metrics are expose by the same HTTP server as the request of the API.

Default: ``

--public-url URL (flag)

Especially if you're running webmentiond behind a proxy like Caddy, nginx, or Apache you need to tell webmentiond under what URL user's should be able to access it. For instance: If you've instructed your proxy to forward requests from to webmentiond, set --public-url


--ui-path PATH (flag)

Webmentiond comes with a little administration UI. The binary package as well as the source repository contain a folder called frontend that contains this UI. Webmentiond has to know where this folder is located on your system in order to present it to you.

Default: ./frontend

Database settings

--database PATH (flag)

Path to the file where webmentiond should store received mentions. Note that webmentiond requires write-access to that file and the folder that contains it.

Default: ./webmentiond.sqlite

--database-migrations PATH (flag)

As features are added or changed to/in webmentiond the database structure has to change as well. To make these updates as pain-free as possible we ship a folder with so-called "migrations". This folder is included in the binary package inside the pkg/server folder.

Default: ./pkg/server/migrations

E-mail settings

Webmentiond requires an SMTP server to send you login email and also notifications.

MAIL_HOST (environment)

Hostname of the SMTP server, e.g.:

MAIL_PORT (environment)

Port the SMTP server accepts requests on, e.g.: 465.

MAIL_USER (environment)


MAIL_PASSWORD (environment)

MAIL_FROM (environment)

Through this setting you can define who should show up as the sender of mails. E.g.:

MAIL_USE_STARTTLS (environment)

If your mail server requires STARTTLS, you can set this environment variable to true and mails will use this instead of TLS.

--send-notifications (flag)

With this flag you can tell webmentiond to send out email notifications (e.g. if a new mention has been verified).

Default: false

Authentication settings

--auth-jwt-secret SECRET (flag) / SERVER_AUTH_JWT_SECRET (environment)

When you log into the administration UI the server generates a little token for you and signs it. The secret is necessary for that signing step. What the secret looks like, though, is completely up to you. Just take any random but long string (e.g. 52ba8240-b926-11ea-9e38-73b2d46d3547 or this-is-a-r3411y-long-PassPhrase-Th4t5_hard-to-GuEsS).

--auth-jwt-ttl DURATION (flag)

This value determines how long you can stay logged into the administration UI without having to re-login.

Default: 7d (7 days)

--auth-admin-emails EMAIL (flag)

You log into the administration UI using your e-mail address. In order for the system to know who should be able to log in, you have to specify their e-mail address here.

--auth-admin-access-key KEY=KEYLABEL (flag)

For special circumstances (e.g. CI integration) you might want to allow programmatic access to the administrative API. With this you can specify access keys that you can send to /api/authenticate/access-key in order to retrieve a JWT.

--auth-admin-access-key-jwt-ttl DURATION (flag)

This value determines how long you can stay logged into the administration UI without having to re-login if the JWT was created using an admin access key.

Default: 5m (5 minutes)

Using a configuration file

If you prefer to store your configuration inside a single configuration, you can also do that. To get started, run webmentiond config init which will generate a webmentiond.yaml file inside your current working directory. In order for webmentiond to also load your settings from this file, pass --config-file webmentiond.yaml to any webmentiond command.