Configuration

Default configuration is defined in config/default.toml. SwissKnife supports toml, yaml and json config files. The order of applied configuration is the following:

1. ENV vars. Defined given the names of the config values in default.toml, adding the prefix SWISSKNIFE. Overriding all sensitive values with ENV vars is recommended. For example, SWISSKNIFE_DATABASE__URL will override the database_url value in the config (underscores are replaced with double underscores).
2. any file under config corresponding to the RUN_MODE (development by default). Such as development.toml|yaml|json or production.toml|yaml|json.
3. The default.toml|yaml|json file.

Inspect the .env.example file for and generate your own .env for sensitive config values.

On Kubernetes, you can use a ConfigMap to inject the configuration into the container and secrets for sensitive values.

Configuration values

App

Config values for the application's business logic. To be placed at the root.

Config Value	Description
invoice_expiry	Expiry time for generated invoices
domain	Application's domain
host	API host URL
fee_buffer	Buffer percentage for transaction fees
bitcoin_address_type	On-chain Bitcoin address script type (p2pkh, p2sh, p2wpkh, p2tr; default p2wpkh)
ln_provider	Lightning Network provider
auth_provider	Authentication provider
dashboard_dir	Filesystem path to the bundled dashboard static assets

Web server

Config values for the web server. To be placed under web.

Config Value	Description
web.addr	Web server bind address and port
web.request_timeout	Request timeout duration

Core Lightning provider (gRPC)

Config values for Core Lightning provider using gRPC. To be placed under cln_grpc_config.

Config Value	Description
cln_grpc_config.endpoint	gRPC endpoint for Core Lightning
cln_grpc_config.certs_dir	Directory for Core Lightning certificates
cln_grpc_config.maxfeepercent	Maximum fee percentage for payments
cln_grpc_config.payment_timeout	Payment timeout duration
cln_grpc_config.payment_exemptfee	Exempt fee value for payments

Core Lightning provider (REST)

Config values for Core Lightning provider using REST. To be placed under cln_rest_config. Numeraire SwisskKnife uses runes and the websocket server to sync events from the node.

Config Value	Description
cln_rest_config.endpoint	REST endpoint for Core Lightning
cln_rest_config.ca_cert_path	File path to the TLS CA certificate (optional; needed when connecting over HTTPS)
cln_rest_config.rune	Rune value for Core Lightning
cln_rest_config.connect_timeout	Connection timeout duration
cln_rest_config.timeout	Request timeout duration
cln_rest_config.connection_verbose	Enable verbose connection logging
cln_rest_config.accept_invalid_certs	Accept invalid certificates
cln_rest_config.accept_invalid_hostnames	Accept invalid hostnames
cln_rest_config.maxfeepercent	Maximum fee percentage for payments
cln_rest_config.payment_timeout	Payment timeout duration
cln_rest_config.payment_exemptfee	Exempt fee value for payments

tip

Use an ENV var for SWISSKNIFE_CLN_REST_CONFIG__RUNE, as that value is highly sensitive.

LND provider (gRPC)

Config values for LND provider using gRPC. To be placed under lnd_grpc_config.

Config Value	Description
lnd_grpc_config.endpoint	gRPC endpoint for LND
lnd_grpc_config.cert_path	File path to the TLS certificate
lnd_grpc_config.macaroon_path	File path to the admin macaroon
lnd_grpc_config.fee_limit_msat	Maximum fee limit in millisatoshis for payments
lnd_grpc_config.payment_timeout	Payment timeout duration
lnd_grpc_config.reorg_buffer_blocks	Number of blocks to wait before considering an on-chain transaction confirmed (reorg safety)

LND provider (REST)

Config values for LND provider using REST. To be placed under lnd_rest_config.

Config Value	Description
lnd_rest_config.host	Host and port for LND REST API
lnd_rest_config.macaroon_path	File path to the admin macaroon
lnd_rest_config.ca_cert_path	File path to the TLS certificate (optional; needed when connecting over HTTPS)
lnd_rest_config.connect_timeout	Connection timeout duration
lnd_rest_config.timeout	Request timeout duration
lnd_rest_config.connection_verbose	Enable verbose connection logging
lnd_rest_config.accept_invalid_certs	Accept invalid certificates
lnd_rest_config.accept_invalid_hostnames	Accept invalid hostnames
lnd_rest_config.payment_timeout	Payment timeout duration
lnd_rest_config.fee_limit_msat	Maximum fee limit in millisatoshis for payments
lnd_rest_config.reorg_buffer_blocks	Number of blocks to wait before considering an on-chain transaction confirmed (reorg safety)

Logging

Config values for logging. To be placed under logging.

Config Value	Description
logging.format	Format of log output
logging.ansi	Enable ANSI colors in logs
logging.line_number	Include line numbers in logs
logging.thread_ids	Include thread IDs in logs
logging.thread_names	Include thread names in logs
logging.level	Logging level
logging.filter	Logging filter rules
logging.file	Output logs to file

Authentication

Config values for authentication. To be placed under oauth2 or jwt depending on the choice of authentication. Numeraire SwissKnife supports OAuth2 and JWT authentication.

Config Value	Description
oauth2.domain	OpenID provider issuer base URL (e.g. auth.numeraire.tech)
oauth2.audience	OAuth2 audience
oauth2.jwks_refresh_interval	JWKS refresh interval
oauth2.leeway	Leeway time for token validation
jwt.token_expiry	JWT token expiry time
jwt.secret	Secret key for JWT authentication

note

With the jwt provider, the admin credential is not set in the configuration file. The single initial Admin user's password is established on first launch via the sign-up flow and stored hashed in the database. Only jwt.secret (and optionally jwt.token_expiry) are configured here.

tip

Use an ENV var for SWISSKNIFE_JWT__SECRET, as this value is highly sensitive.

Database

Config values for the database connection. To be placed under database.

Config Value	Description
database.url	Database connection string (required; PostgreSQL or SQLite)
database.max_lifetime	Maximum connection lifetime
database.idle_timeout	Idle timeout duration
database.max_connections	Maximum number of connections
database.min_connections	Minimum number of connections
database.acquire_timeout	Timeout for acquiring a connection
database.connect_timeout	Timeout for establishing a connection
database.sqlx_logging	Enable SQLx logging
database.busy_timeout	SQLite-only: how long a writer waits for the lock before failing (ignored for Postgres)

tip

Use an ENV var for the SWISSKNIFE_DATABASE__URL.