Reference
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Config and environment reference
This page is the operator and integrator lookup surface for the configuration families that are exposed in the current repository. Use it as the fast index, then move into the deeper runtime docs when you need subsystem detail.
At a glance#
Family Representative settings Use when Local ports and launch CALIBER_PORT, MLFLOW_PORT, MLFLOW_GATEWAY_PORTbringing up the local suite Core runtime CALIBER_DATABASE_URL, CALIBER_LOG_SINKwiring the control plane and logging LLM provider and gateway CALIBER_LLM_PROVIDER, CALIBER_LLM_BASE_URLchoosing provider routing Object store CALIBER_OBJECT_STORE_*uploads, extraction, previews, log mirroring Workflow storage CALIBER_WORKFLOW_STORAGE_*run workspaces, limits, retention, signed URLs Event backend CALIBER_WORKFLOW_RUN_EVENT_BACKENDworkflow queue and runtime eventing
1. Local launch and ports# Setting Purpose CALIBER_PORThost port for the CALIBER UI/API service MLFLOW_PORThost port for the MLflow UI; start.sh guards common collisions MLFLOW_GATEWAY_PORThost port for the MLflow AI Gateway surface
2. Core runtime# Setting Purpose CALIBER_DATABASE_URLSQLAlchemy URL for the CALIBER metadata store CALIBER_LOG_SINKchoose stderr-only or S3/object-store-backed JSONL mirroring CALIBER_STATIC_PREFIXserve behind a reverse-proxy prefix when applicable
3. LLM and gateway# Setting Purpose CALIBER_LLM_PROVIDERselect the default provider implementation CALIBER_LLM_BASE_URLoverride the OpenAI-compatible base URL CALIBER_GATEWAY_URIdiscover an MLflow AI Gateway surface
4. Object store# Setting Purpose CALIBER_OBJECT_STORE_ENDPOINT_URLobject-store endpoint CALIBER_OBJECT_STORE_REGIONobject-store region CALIBER_OBJECT_STORE_ACCESS_KEY_SOURCEsecret source for access key CALIBER_OBJECT_STORE_SECRET_KEY_SOURCEsecret source for secret key CALIBER_OBJECT_STORE_FORCE_PATH_STYLEpath-style S3/MinIO behavior
5. Workflow storage# Setting Purpose CALIBER_WORKFLOW_STORAGE_BACKENDlocal or s3CALIBER_WORKFLOW_STORAGE_BASE_URIlocal workspace root when using local backend CALIBER_WORKFLOW_STORAGE_BUCKETS3/MinIO bucket for workflow files CALIBER_WORKFLOW_STORAGE_PREFIXkey prefix for workflow files CALIBER_WORKFLOW_STORAGE_INTERNAL_ENDPOINT_URLinternal endpoint for worker-side access CALIBER_WORKFLOW_STORAGE_PUBLIC_ENDPOINT_URLpublic endpoint for signed URLs CALIBER_WORKFLOW_STORAGE_MAX_UPLOAD_BYTESper-upload limit CALIBER_WORKFLOW_STORAGE_MAX_RUN_BYTESper-run total byte limit CALIBER_WORKFLOW_STORAGE_MAX_FILES_PER_RUNper-run file-count limit CALIBER_WORKFLOW_STORAGE_SIGNED_URL_TTL_SECONDSdefault signed URL lifetime CALIBER_WORKFLOW_STORAGE_RETENTION_*run-artifact retention policy
6. Event backend# Setting Purpose CALIBER_WORKFLOW_RUN_EVENT_BACKENDworkflow event transport/backing mode
7. Secret-source convention# Prefer settings ending in *_SOURCE for credentials and sensitive values. The current runtime is designed around secret sources rather than spreading literal keys throughout deployment files.
CALIBER : Contextual Adaptive Lifecycle for Intelligent Build, Evaluation, and Refinement —
this page is generated from the authoritative Markdown sources in docs/ and the repository-level ARCHITECTURE.md.