Environment variables

Parsimony Agents reads only a small set of variables itself. Model providers and connector packages may read their own credentials.

Credentials

litellm reads the variable expected by the selected provider:

Variable	Used for
ANTHROPIC_API_KEY	Anthropic models
GEMINI_API_KEY	Gemini models
OPENAI_API_KEY	OpenAI models

Other litellm-supported providers use their documented variables. A provider key can instead be passed through Agent(api_key=...) or model_config.

Connector credentials are separate. For example, the FRED connector may read FRED_API_KEY, while explicit code can bind the same value with FRED.bind(api_key=...). Consult each connector package for its variables.

Execution

Variable	Effect
EXECUTOR_CELL_TIMEOUT_S	Default per-cell timeout for CodeExecutor, in seconds. Defaults to 300.
OCKHAM_DISABLE_SANITIZE	Values 1, true, or yes disable the AST sanitizer. Use for local debugging only.

Execution mode is selected in code. Agent() defaults to the in-process executor; create_executor(cwd=..., prefer_boundary=True) selects bubblewrap on supported Linux hosts and otherwise falls back in-process with a warning. Pass prefer_boundary=False to request in-process execution explicitly.

There is no OCKHAM_SANDBOX_BOUNDARY environment variable. Always inspect the executor's capability_tier before treating it as a security boundary. See Code execution.