When Claude Code sends a stop-hook evaluator request (or any request
without tools), the payload includes "tools": [] (empty array). The
claude->codex translator unconditionally emits tools: [] + tool_choice:
"auto" + parallel_tool_calls: true into the Codex Responses shape.
When that payload is routed to xAI, the upstream rejects with HTTP 400:
"A tool_choice was set on the request but no tools were specified."
Fix entirely in the xAI executor (translator package is policy-locked):
add normalizeXAIToolChoiceForTools() after normalizeXAITools() to drop
tool_choice and parallel_tool_calls whenever tools end up absent or
empty (covering both the empty-from-source case and the
all-filtered-out case where every tool was an unsupported type such as
tool_search or image_generation).
Per code-review feedback: always remove parallel_tool_calls when tools
are missing (not gated on tool_choice presence) and existence-check
each key before sjson delete to avoid unnecessary JSON parse/copy.
Verification:
- go build -o test-output ./cmd/server
- go test ./internal/runtime/executor/... -count=1
- 5 new regression tests cover empty / missing / present / orphaned
parallel_tool_calls / no-op-when-both-absent.
- Introduced `translateCodexRequestPair` to simplify and reuse translation logic for handling original and modified payloads.
- Updated relevant methods to use the new function.
- Added unit tests to cover payload reuse and differentiation scenarios.
- Added `sanitizeDownstreamWebsocketFallbackRequest` to clean `generate` from payload for HTTP fallback requests.
- Implemented tests to validate payload handling logic in WebSocket-to-HTTP transitions.
Closes: #3556
- Introduced `service_tier` metadata key to capture client-requested service tiers.
- Updated usage records, context propagation, and plugins to include service tier data.
- Added default handling logic for cases where `service_tier` is absent.
- Implemented tests for `service_tier` extraction, defaults, and updates across components.
- Updated `TotalTokens` calculation to account for `CacheReadTokens` and `CacheCreationTokens`.
- Added tests to validate accurate token aggregation and fallback behavior for `CachedTokens`.
- Added `assertFileBodySourceCleaned` helper to streamline cleanup validations in tests.
- Introduced handling to recreate missing directories during file source operations.
- Enhanced tests to verify behavior after manual directory removal, ensuring robustness.
- Fixed edge cases in log file merging when parts are missing.
- Introduced Time-To-First-Token (TTFT) measurement and reporting across major executors.
- Added TTFT calculation to `UsageReporter`, including support for HTTP clients and WebSocket communication.
- Updated tests to validate TTFT tracking in streamed and non-streamed scenarios.
- Ensured integration with `usage` plugin and augmented usage records with TTFT data.
- Introduced `SetTranslatedReasoningEffort` method in `UsageReporter` to capture and log reasoning efforts from translated payloads.
- Updated executors to incorporate the new reporting functionality for handling reasoning efforts across various providers.
- Enhanced logging for thinking level extraction with new helper function `ExtractTranslatedReasoningEffort`.
- Introduced support for processing `encrypted_content` reasoning signatures in request and response translations.
- Updated `ConvertOpenAIResponsesRequestToClaude` and `ConvertClaudeResponseToOpenAIResponses` to handle reasoning signatures and summaries.
- Added tests to validate signature preservation and correct reasoning content transformation in both streaming and non-streaming scenarios.
- Refactored processing logic to ensure reasoning content flushing before user messages.
- Updated WebSocket response repair tests to validate incremental preservation of response calls and outputs.
- Added new test cases for custom tool responses ensuring accurate handling of output cache and call cache.
- Refactored `repairResponsesWebsocketToolCallsWithCaches` to handle orphan outputs more consistently.
- Adjusted input filtering logic for clearer incremental repair behavior.
Closes: #3569
- Introduced `GPTImage2BaseModel` configuration for hosted image generation tools with validation for "gpt-" prefix.
- Added logic to dynamically resolve and apply the base model in Codex executor workflows.
- Enhanced server-sent events (SSE) implementation with keep-alive tickers and error events for stream reliability.
- Updated configuration file examples and internal documentation.
- Introduced parsing logic to handle `websockets` field in auth files.
- Extended `PatchAuthFileFields` to update `websockets` and arbitrary nested metadata fields.
- Added tests to validate `websockets` parsing, updating, and persistence.
- Introduced `FileBodySource` to support large request log sections stored in temp files.
- Added file-backed support for WebSocket timeline and API WebSocket timeline logging.
- Updated `LogRequest` and middleware to integrate optional file-backed sources.
- Implemented clean-up mechanisms to manage temporary log files after processing.
- Included `RequestID` field in `homeRequestLogPayload` for better log categorization.
- Updated `forwardRequestLogToHome` and related components to handle `RequestID`.
- Added new test cases to validate `RequestID` propagation in streaming requests.
- Introduced `fetch_codex_models` CLI command to fetch and save Codex model catalogs in JSON format.
- Supports configuration via flags or `config.yaml` for flexible setup.
- Enhanced `fetch_antigravity_models` with `config.yaml` support and improved auth directory resolution logic.
- Acknowledged APIKEY.FUN as a sponsor with details on their services and exclusive project-specific benefits.
- Updated Japanese (README_JA.md), Chinese (README_CN.md), and English (README.md) documentation.
- Added new sponsorship image (`assets/apikey.png`).
- Added support for advanced RESP commands (`AUTH`, `SUBSCRIBE`, `RPOP`, `LPOP`) with extended functionality.
- Implemented queue operations for usage events via `RPOP` and `LPOP` commands.
- Introduced subscription handling with new Pub/Sub message features and error handling improvements.
- Updated Redis connection logic to enforce authentication requirements and validate inputs.
- Expanded related unit tests to cover new scenarios and edge cases.
- Updated `ConvertClaudeRequestToGemini` to ignore empty `text` entries during processing.
- Added unit tests to ensure empty `text` parts are skipped correctly.
Closes: #3485
lamtran