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Set optional local limits in .env:
Arka blocks hosted requests before dispatch when the token or estimated cost budget is exceeded. Cost guardrails never block local-only models. Arka stores only aggregate counters in its cache, not prompts. Grounded mode is enabled by default (ARKA_GROUNDED_MODE=1). It blocks unrequested mock data and instructs model-facing requests to use symbolic tools or configured APIs for current information. Unless you explicitly ask for a mock, prototype, placeholder, or example design, Arka biases toward real data, real integrations, and production-shaped error handling. Disable only when prototyping:
Production mode is also enabled by default (ARKA_PRODUCTION_MODE=1). Arka instructs coding requests to include access control, secret-safe data handling, input and output validation, prompt-injection defenses, audit logging, tests, error handling, and observability. Disable it only for explicitly disposable prototypes. Data minimization defaults to schema-only mode (ARKA_DATA_MODE=schema). JSON payloads sent to models are summarized as field names/types or array counts; literal trade-secret values remain available to local tools but are not exposed to the model. Use ARKA_DATA_MODE=full only when the data is safe to share.