> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getbifrost.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# v2.1.27

> Helm v2.1.27 changelog - 2026-07-09

<Update label="Bifrost Helm" description="v2.1.27">
  ## Changelog

  * `bifrost.schemaUrl` — override the generated `config.json` `$schema` location for isolated or air-gapped deployments. Accepts an HTTP(S) URL, `file://` URL, or filesystem path. When set, the value is also exported as `BIFROST_SCHEMA_URL` in the pod; when empty (default), the env var is not injected and the public schema URL is used. Renders into `$schema`.
  * `bifrost.auditLogs.objectStorage` for archiving audit events to S3/GCS. Each flushed batch is written as a JSONL object (`{prefix}/audit-logs/YYYY/MM/DD/HH/{id}.jsonl`); set `compress: true` to gzip the output (`.jsonl.gz`). Supports `type` (s3/gcs), `bucket`, `prefix`, `compress`, and full S3 credential fields (`region`, `endpoint`, `accessKeyId`, `secretAccessKey`, `sessionToken`, `roleArn`, `forcePathStyle`) and GCS fields (`projectId`, `credentialsJson`). Renders into `audit_logs.object_storage`.
  * `force_single_region` on `bifrost.providers.vertex.keys[*].vertex_key_config` — when `true`, skips automatic promotion of multi-region-only models to a multi-region endpoint. Enable for provisioned throughput. Renders into `vertex_key_config.force_single_region`.
  * `calendar_aligned` on `bifrost.accessProfiles[*]` (top-level) — snaps all budget and rate-limit reset windows to calendar boundaries for the profile. Passes through into `access_profiles[*].calendar_aligned`.
  * `calendar_aligned` on `bifrost.accessProfiles[*].budgets[*]` and `bifrost.accessProfiles[*].provider_configs[*].budgets[*]` — schema previously blocked this field; now matches parity with `governance.budgets[*].calendar_aligned`.
  * `calendar_aligned` on `bifrost.governance.virtualKeys[*]` — was accepted by schema but not rendered into config. Now correctly emits `virtual_keys[*].calendar_aligned` in the generated config.
  * `bifrost.alerting` for declarative alert channels and rules. Supports `history_retention_days`, `webhook_network` (`allow_http`, `allow_private_network`), `channels[]` (slack, microsoft\_teams, pagerduty, webhook), and `rules[]` (CEL-expression-based, governance-scope-aware). Renders into `alerting`.
  * `postgresql.external.port` now accepts a string in addition to an integer, enabling env-variable substitution via `env.VAR_NAME` references when mounting port from a Kubernetes secret. Renders into `postgres_config.port`.
  * `bifrost.mcp.toolGroups[*].id` — optional integer DB ID for an existing MCP tool group. When set, the reconciler updates the group by ID instead of matching by name. Renders into `mcp.tool_groups[*].id`.
</Update>