v1.5.5

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✨ Features

• Azure v1 API Migration — Migrated Azure provider to the v1 API: removed the api-version query parameter and the /openai/deployments/{model}/... URL pattern in favor of /openai/v1/{operation}; the api_version field has been dropped from AzureKeyConfig (#3661, #3756)
• EnvVar Support for OTEL & Prometheus Configs — CollectorURL, MetricsEndpoint, headers, push gateway URL, and basic auth credentials can now be sourced from environment variables (e.g., env.OTEL_COLLECTOR_URL); added a new ConfigMarshallerPlugin interface that lets plugins control storage/redaction round-trips (#3651)
• OTel Extra Header Forwarding — x-bf-eh-* extra headers forwarded to upstream providers are now also emitted on the request span under gen_ai.request.extra_header.* for end-to-end tracing (#3730)
• OTel Semantic Conventions — Aligned OTel attribute keys with the OpenTelemetry GenAI spec (canonical gen_ai.* and new bifrost.* attributes); legacy attributes are retained in parallel to avoid breaking existing dashboards (#3732)
• VK Quota with Provider Configs — GetVirtualKeyQuotaByValue and the getVirtualKeyQuota HTTP response now include provider_configs with their budgets and rate limits (#3721)
• MCP Temp Token Non-Auth Toggle — Added mcp_enable_temp_token_auth client config flag to gate short-lived MCP token minting for non-authenticated users (#3720)
• Responses Stream in JSON Parser — jsonparser plugin now handles OpenAI Responses API streaming (ResponsesStreamRequest) in addition to chat completions (#3749)
• Session API Rework — Logout now calls both the password-based session logout and OAuth logout endpoints and resets all RTK Query cache state (#3698)

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🐞 Fixed

• Streaming Latency for Observability — Deferred root span termination to the trace completer callback for streaming requests so request latency is no longer inflated by header-flush time (#3762)
• Stream Cancellation Race — Set BifrostContextKeyConnectionClosed before closing the stream and short-circuit idleTimeoutReader.Read when the connection is already closed to avoid panics and hangs on cancellation (#3733)
• Bedrock Cache Points — Strip cache points from Bedrock requests for models that do not support prompt caching (e.g., GLM, Llama) to avoid Converse API errors (#3754)
• Bedrock Empty Text Blocks — Skip empty/nil text blocks during Bedrock response conversion to avoid invalid messages (#3747)
• Bedrock Reasoning + Tools — Preserve reasoning content blocks on assistant turns that also contain tool calls in the Bedrock chat converter (#3690)
• Bedrock Search Content & Video — Restored search content and video parts that were being dropped from Bedrock-native passthrough requests (#3729)
• Structured Output Stop Reason — Fixed an incorrect tool_calls finish reason when structured output is combined with extended-thinking tools (#3685)
• Gemini Tool Schema Passthrough — Forward full tool parameter schemas via parametersJsonSchema instead of the lossy parameters form; corrected tool response role to user; resolved structured output + tools conflict (#3761)
• Anthropic Stop Reason & Tool Versions — Normalized stop reason mapping (end_turn to stop, tool_use to tool_calls, max_tokens to length) and upgraded text_editor_20250124/str_replace_editor to text_editor_20250728 for computer-use tools (#3761)
• Azure Endpoint Redaction — Fixed a panic when AzureKeyConfig.Endpoint is a literal value rather than an env reference (#3761)
• Auth Middleware Path Match — Match temp-token auth middleware whitelist against the request path only, not the full URI with query parameters (#3737)
• Governance Blocked Models UI — Restored the missing Blocked Models create/edit UI in the VK provider config sheet (#3750)
• Logging Plugin Cleanup Drain — Fixed a shutdown race where batchWriter could drop in-flight log entries; Cleanup now drains both the recovered batch and remaining queue within a 30-second budget (#3717)
• Model Rankings Empty Entries — Excluded entries with empty model values from model rankings matview queries so blank rows no longer surface in the UI (#3758)
• User Filter Duplicates — Recreated mv_filter_users matview to require non-empty user_name, eliminating duplicate filter dropdown entries (#3764)
• User Filter Display Name — Use user_name instead of user_id as the display label for users in logging filters (#3691)
• Large Numeric ID Precision — Preserve large numeric IDs in URL search params by skipping JSON parsing for plain strings (#3692)

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🔧 Refactors & Chores

• Error Propagation for GetAvailable* APIs — GetAvailable* methods on LoggerPlugin/LogManager now return wrapped errors instead of silently logging and returning empty slices (#3759)
• Governance Blocklist Matching — Use slices.Contains for VK blocked-model matching for clearer code with identical semantics (#3727)
• Exported ResolvePeriod — Renamed resolvePeriod to ResolvePeriod so external packages can reuse the period parsing (#3763)

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📚 Docs

• OTEL Env Var Documentation — Documented env.VAR_NAME support for collector_url, metrics_endpoint, and headers in OTEL/Prometheus plugin docs
• OTEL OSS Features & Examples — Added OTEL documentation to the OSS features list with usage examples (#3731)
• Anthropic Auth Recommendation — Recommend ANTHROPIC_AUTH_TOKEN over ANTHROPIC_CUSTOM_HEADERS for Claude Code authentication (#3686)

• feat: migrate Azure provider to the v1 API and remove api_version from AzureKeyConfig (#3661, #3756)
• feat: add ConfigMarshallerPlugin interface so plugins can control config storage and redaction round-trips (#3651)
• feat: forward x-bf-eh-* extra headers as gen_ai.request.extra_header.* span attributes (#3730)
• feat: align OTel attribute keys with the GenAI semantic conventions spec; emit both legacy and canonical attributes (#3732)
• fix: strip cache points from Bedrock requests for models that do not support prompt caching (#3754)
• fix: skip empty/nil text blocks during Bedrock response conversion (#3747)
• fix: preserve reasoning blocks alongside tool calls in the Bedrock chat converter (#3690)
• fix: restore search content and video parts dropped from Bedrock passthrough requests (#3729)
• fix: correct tool_calls finish reason when structured output is combined with extended-thinking tools (#3685)
• fix: set BifrostContextKeyConnectionClosed before closing stream and short-circuit idleTimeoutReader.Read on closed connections (#3733)
• fix: Gemini tool schema passthrough via parametersJsonSchema, correct tool response role to user, resolve structured output + tools conflict (#3761)
• fix: normalize Anthropic stop reason mapping and upgrade computer-use tool versions to text_editor_20250728 (#3761)
• fix: Azure config redaction panic when Endpoint is a literal value (#3761)
• chore: fix Bedrock transport tests (#3735)

• feat: include ProviderConfigs with budgets and rate limits in virtual key quota query and response (#3721)
• feat: add mcp_enable_temp_token_auth client config flag to gate MCP temp token minting for non-auth users (#3720)
• fix: recreate mv_filter_users matview to exclude rows with empty user_name (#3764)
• fix: exclude empty model entries from model rankings matview queries (#3758)
• chore: add migration test column blocks for new v1.5.4 governance/configstore columns (#3761)

• chore: upgraded core to v1.5.13 and framework to v1.3.13

• fix: restore VK blocked models create/edit UI in the provider config sheet (#3750)
• refactor: use slices.Contains for VK blocked-model matching (#3727)

• feat: handle OpenAI Responses API streaming (ResponsesStreamRequest) in addition to chat completions (#3749)
• chore: added Params with json_object format to the Responses stream end-to-end test (#3761)

• fix: drain pending log entries on Cleanup to avoid dropping in-flight batches at shutdown; bounded 30s drain budget (#3717)
• refactor: GetAvailable* methods now return wrapped errors instead of silently logging and returning empty slices (#3759)

• chore: upgraded core to v1.5.13 and framework to v1.3.13

• chore: upgraded core to v1.5.13 and framework to v1.3.13

• feat: add EnvVar support for CollectorURL, MetricsEndpoint, and headers; implements ConfigMarshallerPlugin for storage/redaction round-trips (#3651)
• refactor: align OTel attribute keys with the OpenTelemetry GenAI semantic conventions spec; legacy gen_ai.* emissions retained in parallel (#3732)

• chore: upgraded core to v1.5.13 and framework to v1.3.13

• chore: upgraded core to v1.5.13 and framework to v1.3.13

• feat: add EnvVar support for PushGatewayURL and BasicAuth (username/password); implements ConfigMarshallerPlugin (#3651)