v2.2.3

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✨ Features

• Pinned Keys on Routing Fallbacks - Each routing-rule fallback can pin a provider key via key_id, or provider_key_name in config.json. The UI rule editor lets you pick or clear a key per fallback. Unpinned fallbacks keep the legacy provider/model string, so existing rules keep their config hash (#7470, #7379, #7380, #7381)
• OpenAI Async Tool Execution - The async flag on Responses tools and tool calls, output_schema on function tools and tunnel_id on MCP tools are now forwarded to OpenAI. async is stripped for models without support, and the datasheet supports_async_tools field can override this (#7242)
• GPT-6 Prompt Cache Breakpoints - Prompt-cache breakpoints now cover the GPT-6 family on OpenAI, Azure, Bedrock and Bedrock Mantle. The datasheet supports_prompt_cache_breakpoint field can override this (#7240)
• GPT-6 Sol and Luna Reasoning Off - reasoning.effort: "none" is forwarded for gpt-6-sol and gpt-6-luna. Other GPT-6 models keep reasoning on (#7492)

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🐞 Fixed

• OpenAI Sampling Parameters on Reasoning Models - temperature, top_logprobs and logprobs are now stripped alongside top_p on chat and Responses when the model and effort do not support them. An omitted reasoning.effort now counts as none only for models that default to no reasoning (#7239)
• Responses API Wire Shapes - Structured MCP tool-call errors, object-form conversation, array-form MCP allowed_tools, approval_request_id on MCP approval responses, and in/nin file search filters now decode and re-encode correctly (#7241)
  Go SDK callers: ResponsesMCPApprovalResponse.ApprovalResponseID is now ApprovalRequestID, the message type is now mcp_approval_response, and ResponsesToolMessage.Error and ResponsesParameters.Conversation are now union types, where they used to be *string.
• OpenRouter Anthropic Cache Breakpoints - Anthropic models routed through OpenRouter now keep their cache_control breakpoints, based on the model capability (#7521)
• Session Affinity with Pinned Keys - When session affinity reorders the chain, a routing rule’s key pin now moves with its provider, so the pinned key is never looked up under the wrong provider (#7468)
• Session Affinity Route Matching - A session’s route is now matched on provider and model together. Bindings the request followed into a failure are dropped (#7473)
• Databricks Gemini System Prompts - Multiple system and developer messages are merged into one for Gemini models hosted on Databricks, which reject more than one system prompt (#7461)
• Bedrock Encrypted Reasoning Replay - Bedrock’s “encrypted reasoning was created for a different account or model” error now triggers the strip-and-retry path for unverifiable reasoning
• Decisions on Bedrock Mantle - Decision emulation now sends tool_choice: "auto" for gpt-oss models on Bedrock Mantle, which reject "required". Leaked parameter tags with surrounding whitespace are now recovered
• Gemini Transcription Usage - Usage is reported even when the transcript is empty
• Routing Rule Enabled State - Syncing or updating a routing rule that omits enabled keeps the stored value, where it used to write NULL
• Telemetry User Labels Toggle - user_labels_enabled is now saved with the telemetry config (#7490)

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🗄️ Database Migrations

• No new database migrations in this release.

• feat: pinned provider keys on routing fallbacks via key_id on each fallback (#7470)
• feat: forward OpenAI async tools, output_schema and tunnel_id on Responses, stripping async for unsupported models with a SupportsAsyncTools datasheet override (#7242)
• feat: prompt-cache breakpoints for the GPT-6 family with a SupportsPromptCacheBreakpoint datasheet override (#7240)
• feat: reasoning effort none for gpt-6-sol and gpt-6-luna (#7492)
• fix: strip unsupported temperature, top_logprobs and logprobs alongside top_p for OpenAI reasoning models, and count an omitted effort as none only for models that default to no reasoning (#7239)
• fix: Responses wire shapes for structured MCP tool errors, object-form conversation, array-form MCP allowed_tools, approval_request_id and in/nin file search filters (#7241)
  Go SDK callers: ResponsesMCPApprovalResponse.ApprovalResponseID is now ApprovalRequestID, the message type is now mcp_approval_response, and ResponsesToolMessage.Error and ResponsesParameters.Conversation are now union types, where they used to be *string.
• fix: keep cache_control breakpoints for Anthropic models routed through OpenRouter (#7521)
• fix: move routing key pins with their provider when session affinity reorders the chain (#7468)
• fix: match session affinity routes on provider and model together, and drop bindings the request followed into a failure (#7473)
• fix: merge multiple system and developer messages for Databricks-hosted Gemini models (#7461)
• fix: treat Bedrock’s cross-account or cross-model encrypted reasoning rejection as recoverable and retry without it
• fix: decision emulation uses tool_choice auto for gpt-oss on Bedrock Mantle, and recovers leaked parameter tags with surrounding whitespace
• fix: report Gemini transcription usage even when the transcript is empty

• feat: RoutingFallback type accepting the legacy provider/model string or an object with a pinned key_id or provider_key_name (#7470)
• fix: keep a routing rule’s stored enabled value when an update or config sync omits it
• fix: deep copy the async flag and union tool error in streaming Responses messages (#7241, #7242)
• chore: upgraded core to v1.10.2

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• chore: upgraded core to v1.10.2 and framework to v1.7.4

• feat: honor pinned provider keys on routing-rule fallbacks (#7470)
• chore: upgraded core to v1.10.2 and framework to v1.7.4

• fix: read both string and object forms of conversation for cache metadata (#7241)
• chore: upgraded core to v1.10.2 and framework to v1.7.4

• fix: persist user_labels_enabled with the telemetry config (#7490)
• chore: upgraded core to v1.10.2 and framework to v1.7.4