> ## 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.

# v1.5.0-prerelease5

> v1.5.0-prerelease5 changelog - 2026-04-21

<Tabs>
  <Tab title="NPX">
    ```bash theme={null}
    npx -y @maximhq/bifrost --transport-version v1.5.0-prerelease5
    ```
  </Tab>

  <Tab title="Docker">
    ```bash theme={null}
    docker pull maximhq/bifrost:v1.5.0-prerelease5
    docker run -p 8080:8080 maximhq/bifrost:v1.5.0-prerelease5
    ```
  </Tab>
</Tabs>

<Update label="Bifrost(HTTP)" description="1.5.0-prerelease5">
  ## ✨ Features

  * **Access Profiles via Config** - Seed enterprise access profiles declaratively from `config.json` and Helm values at deploy time, including provider restrictions, model allowlists, budgets, rate limits, and MCP server/tool controls
  * **Key IDs in Helm** - `key_ids` is now the preferred field for pinning provider keys in Helm virtual key configurations, aligning Helm values with `config.json` schema

  ## 🐞 Fixed

  * **Fallback Stream State** - Clear `BifrostContextKeyStreamEndIndicator` before fallback requests so stale streaming state doesn't carry into retries
  * **Access Profile Rate Limits** - Rate limit counters for access profiles were always showing 0; now persisted correctly to the database
  * **Helm Encryption Key** - `encryptionKey` is now properly optional for Helm StatefulSet deployments when using a Kubernetes secret reference
  * **Teams View OSS/Enterprise Split** - Extracted full TeamsView into the shared fallback component so it works correctly in OSS builds; fixed pagination offset snap-back and RBAC loading state race

  ***

  ## ✨ Features

  * **Claude Opus 4.7** - Added compatibility for Anthropic's Claude Opus 4.7 model, including adaptive thinking, task-budgets beta header, `display` parameter handling, and "xhigh" effort mapping
  * **Anthropic Structured Outputs** - Added `response_format` and structured output support for Anthropic models across chat completions and Responses API, with order-preserving merge of additional model request fields (thanks [@emirhanmutlu-natuvion](https://github.com/emirhanmutlu-natuvion)!)
  * **MCP Tool Annotations** - Preserve MCP tool annotations (`title`, `readOnly`, `destructive`, `idempotent`, `openWorld`) in bidirectional conversion so agents can reason about tool behavior
  * **Anthropic Server Tools** - Expanded Anthropic chat schema and Responses converters to surface server-side tools (web search, code execution, computer use containers) end-to-end
  * **OCR Request Support** - Added OCR request type with stream terminal detection, full body accumulation for passthrough streams, input logging with detail view, and per-request pricing support
  * **Team Budgets** - New team budget system with per-team spending tracking, atomic ratelimit updates, and database structure support
  * **Single Log Export** - Export individual log entries from the logs view and MCP logs sheet
  * **Deny-by-Default Virtual Keys** - Virtual key provider and MCP configs now block all access when empty; automatic migration backfills existing keys to preserve behavior
  * **User Agent Detection** - Improved multi-user-agent detection with tool call reduplication fix for mixed-client environments
  * **Per-User OAuth Codemode** - OAuth server selection and validation per-user in codemode

  ## 🐞 Fixed

  * **Provider Queue Shutdown Panic** - Eliminated `send on closed channel` panics in provider queue shutdown by leaving channels open and exiting workers via the done signal; stale producers transparently re-route to new queues during `UpdateProvider`
  * **OpenAI Tool Result Output** - Flatten array-form `tool_result` output into a newline-joined string for the Responses API so strict upstreams (Ollama Cloud, openai-go typed models) no longer reject with HTTP 400 (thanks [@martingiguere](https://github.com/martingiguere)!)
  * **vLLM Token Usage** - Treat `delta.content=""` the same as `nil` in streaming so the synthesis chunk retains its `finish_reason`, restoring token usage attribution in logs and UI
  * **Gemini Tool Outputs** - Handle content block tool outputs in Responses API path for `function_call_output` messages (thanks [@tom-diacono](https://github.com/tom-diacono)!)
  * **Bedrock Streaming** - Emit `message_stop` event for Anthropic invoke stream and case-insensitive `anthropic-beta` header merging (thanks [@tefimov](https://github.com/tefimov)!)
  * **Bedrock Tool Images** - Preserve image content blocks in tool results when converting Anthropic Messages to Bedrock Converse API (thanks [@Edward-Upton](https://github.com/Edward-Upton)!)
  * **Gemini Thinking Level** - Preserve `thinkingLevel` parameters across round-trip conversions and correct finish reason mapping
  * **Anthropic WebSearch** - Removed the Claude Code user agent restriction so WebSearch tool arguments flow for all clients
  * **Responses Streaming Errors** - Capture errors mid-stream in the Responses API so transport clients see failures instead of silent termination
  * **Anthropic Request Fallbacks** - Dropped fallback fields from outgoing Anthropic requests to avoid schema validation errors
  * **Tool Execution Header** - Remove redundant static header assignment in tool execution flow
  * **Virtual Key Configs** - Virtual key configurations cleaned up correctly on provider changes; fix key creation and management edge cases
  * **Virtual Key Management** - Fix virtual key creation validation and update handling
  * **vLLM Extra Params** - Extra parameters now properly passed through to vLLM providers
  * **OAuth Query Params** - Preserve existing query parameters when building OAuth upstream authorize URLs
  * **Streaming Timeouts** - Separate streaming clients per provider to prevent read timeout collisions
  * **Plugin Timer Concurrency** - Fix concurrent map access in plugin timer causing potential race conditions
  * **Async Context Propagation** - Preserve context values in async requests so downstream handlers retain request-scoped data
  * **Custom Providers** - Allow custom providers without a list-models endpoint to accept any model rather than restricting on virtual key registration
  * **OTel Insecure Default** - OTel plugin now defaults `insecure` to true when omitted, enabling HTTP collectors without explicit config; OTel semconv updated to v1.40.0
  * **Helm mcpClientConfig** - Fixed templating for `mcpClientConfig` (thanks [@crust3780](https://github.com/crust3780)!)
  * **Helm Chart** - Refreshed helm chart with validation fixes
</Update>

<Update label="Core" description="1.5.4">
  * fix: clear `BifrostContextKeyStreamEndIndicator` value in context for fallback requests
</Update>

<Update label="Framework" description="1.3.4">
  * chore: upgraded core to v1.5.4
</Update>

<Update label="compat" description="0.1.3">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="governance" description="1.5.4">
  * fix: dump all rate limits to DB including access profiles - access profile rate limit counters were always showing 0 in the UI due to missing range in DumpRateLimits
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="jsonparser" description="1.5.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="logging" description="1.5.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="maxim" description="1.6.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="mocker" description="1.5.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="otel" description="1.2.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="prompts" description="1.0.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="semanticcache" description="1.5.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>

<Update label="telemetry" description="1.5.4">
  * chore: upgraded core to v1.5.4 and framework to v1.3.4
</Update>