Environment Variables
The config file is the recommended way to configure agsh. Environment variables are useful as overrides – for example, in CI pipelines, containers, or when you want to temporarily switch providers without editing your config.
Environment variables override config file values but are overridden by CLI flags.
agsh-Specific Variables
| Variable | Description | Example |
|---|---|---|
AGSH_PROVIDER | LLM provider name | openai, anthropic |
AGSH_MODEL | Model identifier | gpt-4o, claude-sonnet-4-20250514 |
AGSH_PERMISSION | Default permission mode | none, read, write |
Provider API Keys
| Variable | Used When |
|---|---|
OPENAI_API_KEY | Provider is openai |
ANTHROPIC_API_KEY | Provider is anthropic |
Provider Base URL
| Variable | Description |
|---|---|
OPENAI_BASE_URL | Custom base URL for the OpenAI-compatible endpoint |
Logging
agsh uses the tracing framework. The log level can be controlled with:
| Variable | Description | Example |
|---|---|---|
RUST_LOG | Standard Rust log filter | agsh=debug, agsh=trace |
If RUST_LOG is not set, the verbosity flag (-v, -vv, -vvv) controls the level:
| Flag | Level |
|---|---|
| (none) | warn |
-v | info |
-vv | debug |
-vvv | trace |
Logs are written to stderr so they do not interfere with agent output.