03 · REFERENCE

Environment variables

XERJ deliberately does not expose feature flags via environment variables. Behaviour lives in the TOML. The only env vars the engine actually reads are the two needed to find the config file and filter logs.

NAME

DEFAULT

DESCRIPTION

XERJ_CONFIG

./xerj.toml

Config file path override. The --config CLI flag wins if both are set.

XERJ_LOG

info

Tracing filter. Accepts tracing_subscriber syntax, e.g. xerj_api=debug,info.

RUST_LOG

—

Fallback tracing filter. Checked only if XERJ_LOG is unset.

There are no feature gates via env. If you want to change XERJ's behaviour, change the config.

Source · engine/crates/server/src/main.rs

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