- Extracted provider key determination into `apiKeyUsageProviderKey` for reuse and better readability.
- Updated `GetAPIKeyUsage` to utilize the new function.
- Added a new test case to validate compatibility grouping logic via `compat_name` attribute.
Closes: #3940#3941
- Added `rpcPluginError` to encapsulate plugin errors with HTTP status codes.
- Enhanced `decodeEnvelopeResult` to preserve and return detailed plugin errors with status codes.
- Introduced `isPluginErrorEnvelope` to identify plugin error envelopes.
- Updated plugin call logic in Unix and Windows loaders to differentiate plugin errors from system errors.
- Added unit tests to verify error handling and status code preservation.
- Added logic to expand single auth JSON payloads into multiple plugin virtual auth records.
- Updated related API endpoints such as `PatchAuthFileStatus` and `DeleteAuthFile` to handle plugin virtual auths with rollback mechanisms.
- Introduced `NormalizePluginOAuthCallbackProvider` and other normalization functions for better handling of OAuth callbacks.
- Enhanced tests to validate multi-auth parsing, rollback behavior, and API response consistency.
- Added `applyCodexClientNonTemplatePriorities` to assign higher priorities to non-template Codex client models dynamically.
- Implemented `maxCodexClientTemplatePriority` to set base priority for non-template models relative to template models.
- Updated unit tests to validate priority calculation for custom models.
- Introduced a new "max" level for reasoning depth in Codex client model configuration, providing maximum problem-solving capability.
- Added `service_tiers` field to model responses for better tier categorization.
- Updated unit tests to validate the inclusion and default behavior of `service_tiers` and the new "max" reasoning depth.
- Updated `ConvertOpenAIRequestToGemini` to process `video_url` message types, extracting and embedding video metadata (MIME type and base64 data) into Gemini request parts.
- Added corresponding unit tests to validate `video_url` handling, ensuring proper extraction and data preservation.
Closes: #3920
- Added a new "max" level to model `thinking.levels` for enhanced customization.
- Removed deprecated Gemini 3 Pro (High/Low) models and associated fields from the registry.
- Simplified `thinking` attribute structure for `grok-build-0.1` and `grok-composer-2.5-fast` models.
Closes: #3901
- Updated `ConvertGeminiRequestToClaude`, `ConvertGeminiRequestToCodex`, and their respective response counterparts to include logic for retaining and using tool/call IDs when present from gateway-provided inputs.
- Enhanced pairing logic between function calls and responses to handle custom and auto-generated IDs consistently.
- Introduced tests validating ID preservation and proper behavior in both streaming and non-streaming flows.
Closes: #3878
- Updated `ConvertGeminiRequestToOpenAI` to consume `tool_call_id`s in FIFO order, ensuring consistent mapping between calls and responses.
- Added fallback logic for unmatched or extra function responses to generate unique `tool_call_id`s with a `call_` prefix.
- Introduced comprehensive unit tests to validate order enforcement, distinct ID assignment, and fallback behavior.
Closes: #3874
- Introduced a new `/reset-quota` API endpoint in the management handler to clear quota and cooldown state for auth records.
- Implemented `ResetQuota` method in the auth manager to handle runtime and registry state resets for affected models.
- Added tests to validate quota reset behavior, including proper state updates and registry consistency.
- Refactored utility functions to support deduplication and registered models handling in quota resets.
Closes: #3866
- Applied `CleanJSONSchemaForGemini` to ensure compatibility by removing unsupported fields and cleaning schema requirements.
- Added test cases to validate schema transformation, ensuring only necessary `required` fields are retained.
- Enhanced both request and response flows to consistently clean and sanitize tool parameter schemas.
Closes: #3863
- Replaced internal model-specific constants with exported defaults (`DefaultClaudeMaxInputTokens`, `DefaultClaudeMaxOutputTokens`).
- Refactored Claude model formatting to centralize schema application in `formatHomeClaudeModel`, with fields like `type`, `display_name`, and token limits.
- Added new unit tests for fallback behavior, metadata fields, and token handling in Claude and Gemini models.
- Removed deprecated test coverage for Amp provider model routes.
Closes: #3833
- Introduced `RebuildMidSystemMessage` field in config to move system messages into the top-level Claude system field.
- Updated executor to handle mid-system message rebuilding when enabled via config or auth attributes.
- Added unit tests to verify rebuilding behavior and default behavior when disabled.
- Updated configuration example and API handlers to support the new field.
Closes: #3792
- Introduced `SetOAuthModelAliasesAttribute` and `OAuthModelAliasesFromAttributes` for managing per-auth model aliases.
- Enhanced OAuth model resolution logic to prioritize per-auth aliases over global aliases.
- Updated metadata handling to extract and sanitize per-account model aliases.
- Added tests to validate alias precedence, empty attributes, and conflict scenarios.
Closes: #3764
- Introduced `BenchmarkConvertSystemRoleToDeveloperLargeInput` to evaluate performance on various input sizes and configurations.
- Improved `convertSystemRoleToDeveloper` logic to optimize JSON rebuilding and reduce unnecessary operations.
- Created helper `makeLargeResponsesInputForBenchmark` to generate test data for performance scenarios.
Closes: #3751
- Introduced `xaiRequiresIsolatedConversation` to enforce session ID generation for `grok-composer` models.
- Updated request preparation logic to handle isolated conversations by setting `prompt_cache_key` and `x-grok-conv-id`.
- Added unit tests with coverage for session isolation, stateless models, and explicit `prompt_cache_key` scenarios.
Closes: #3750
- Implemented `applyOpenAIResponsesTextFormatToGemini` to handle `json_object` and `json_schema` formats.
- Updated generation config to set appropriate `responseMimeType` and optional `responseJsonSchema`.
- Introduced unit tests to validate correct handling of `text.format` conversion scenarios.
Closes: #3721
- Added `normalizeCodexParallelToolCallsForTools` to conditionally remove `parallel_tool_calls` when `tools` are missing or empty.
- Integrated normalization into Codex executor workflows for improved request handling.
- Introduced unit tests to validate behavior across different tool scenarios.
Closes: #3903
- Replaced direct `strings.ToLower` usage with `util.OpenAICompatibleProviderKey` for generating provider keys.
- Updated auth and executor workflows to use namespaced keys for OpenAI-compatible providers.
- Adjusted tests to validate namespaced key handling, including new test cases for provider registration and execution logic.
- Added `OpenAICompatibleProviderKey` helper in `util` for consistent key transformations.
Closes: #3600
- Updated JSON schema handling to remove `$comment` and `enumDescriptions` fields during schema transformations.
- Adjusted test cases to validate the removal of these fields both at root and nested levels.
- Expanded unsupported schema keywords to include `$comment` and `enumDescriptions` for Gemini compatibility.
Closes: #3512
- Updated `ConvertCodexResponseToClaude` to delay emitting `function_call` start events until the `name` field is resolved.
- Introduced `pendingCodexFunctionCall` for buffering incomplete function calls.
- Added tests to ensure proper behavior for deferred starts, including argument buffering and finalization.
Closes: #3471
- Updated `ConvertOpenAIRequestToGemini` and `ConvertOpenAIRequestToCodex` to handle `input_audio`, retaining `data` and `format` fields.
- Added helper `openAIInputAudioMimeType` for determining MIME types from audio formats.
- Introduced unit tests to validate correct preservation of `input_audio` data and format.
Closes: #3447
- Enhanced `ConvertOpenAIResponsesRequestToOpenAIChatCompletions` to include `reasoning_content` in assistant and tool call messages.
- Introduced `collectOpenAIResponsesReasoningContent` for aggregating reasoning summaries.
- Added tests to validate reasoning attachment in various scenarios, including empty reasoning, tool calls, and reasoning followed by user messages.
Closes: #3397
- Updated handling in `ConvertOpenAIResponsesRequestToOpenAIChatCompletions` to retain `input_image` detail fields such as `image_url` and `detail`.
- Added `TestConvertOpenAIResponsesRequestToOpenAIChatCompletions_PreservesInputImageDetail` to verify preservation of image details during transformation.
Closes: #3385
- Updated `ConvertOpenAIResponsesRequestToOpenAIChatCompletions` to retain `tool_choice` with raw byte handling.
- Added `TestConvertOpenAIResponsesRequestToOpenAIChatCompletions_PreservesStructuredToolChoice` to ensure function and type fields are preserved in transformations.
Closes: #3384
- Introduced `CooldownStateStore` interface for managing independent cooldown state persistence.
- Implemented `FileCooldownStateStore` for storing cooldown states as per-auth `.cds` files with atomic writes and stale file cleanup.
- Enhanced `Manager` to support restoring state from `CooldownStateStore` and persisting state changes during auth updates.
- Updated tests to validate cooldown state saving, loading, concurrency handling, and error scenarios.
Closes: #3368
- Introduced `SetTransientErrorCooldownSeconds` to enable configurable cooldowns for transient errors (e.g., 408/500/502/503/504).
- Updated retry scheduling logic to use the new `nextTransientErrorRetryAfter` function.
- Modified config parsing to include `transient-error-cooldown-seconds` with support for disabling or defaulting to legacy behavior.
- Expanded tests to validate transient cooldown logic with various configurations and edge cases.
Closes: #3315
- Added `convertResponsesToolToOpenAIChatTools` and helper methods to handle namespace tools during request conversions.
- Enhanced response handling to restore namespace context for function calls using `applyResponsesFunctionCallNamespaceFields` and related utilities.
- Updated tests to validate namespace flattening, function call restoration, and non-stream response handling.
Closes: #3298
- Added logic in `ConvertOpenAIResponsesRequestToClaude` to exclude `apply_patch` custom tools.
- Introduced `isOpenAIResponsesApplyPatchCustomTool` helper function to identify and filter the tool.
- Added `TestConvertOpenAIResponsesRequestToClaude_DropsApplyPatchCustomTool` to validate the behavior.
Closes: #3243
- Refactored `ConfigReloadHook` to use `reloadConfigFromWatcher` for consistency.
- Added async `reloadConfigAfterManagementSaveAsync` to handle post-save operations.
- Introduced `ReloadConfigIfChanged` in watcher for manual trigger support.
- Enhanced config reload paths to separate auth synthesis from standard updates.
- Updated `applyConfigUpdate` logic to allow more granular reload behaviors.
Closes: #3235
- Updated error handling in `RPopAuth` to distinguish `auth_not_found` from transport errors.
- Added a new test, `TestPickNextViaHomeClassifiesTransportErrorsAsHomeUnavailable`, to validate correct error classification and retryable property.
- Introduced the `gpt-image-2` model in Codex built-ins and updated visibility logic in the registry.
- Added direct proxy support for OpenAI image generation and editing endpoints.
- Implemented new execution paths for `/images/generations` and `/images/edit`, ensuring seamless handling for both JSON and multipart payloads.
- Expanded test coverage to validate the new model and direct proxy features, including streaming scenarios and error handling.
- Introduced `TestRequestCodexTokenCompletionKeepsConcurrentSessionPending` to validate proper handling of concurrent OAuth sessions.
- Refactored Codex OAuth logic to use `newCodexOAuthService` for improved testability.
Closes: #3171
- Added `TestConvertClaudeRequestToOpenAI_ToolSchemaAddsMissingObjectProperties` to validate automatic addition of missing `properties` in `object` schemas.
- Introduced `normalizeObjectSchemaProperties` to recursively ensure schemas of type `object` include an empty `properties` field if absent.
- Updated `ConvertClaudeRequestToOpenAI` to apply schema normalization for improved compatibility with OpenAI schema expectations.
Closes: #3165
- Updated Gemini, Gemini CLI, and Antigravity logic to delete `thinkingConfig` when `ModeNone` is set, `Budget=0`, and `Level` is empty.
- Adjusted tests to validate this behavior across multiple scenarios and models with zero-allowed configurations.
- Extended test cases for additional coverage of mixed-model behavior.
Closes: #3138
- Derive replay session from generateStableSessionID when sessionId is absent
- Merge cached thoughtSignature into existing functionCall by call id
- Allow filter to pass function_call_part when only signature replay is needed
- Include native functionCall id in replay dedupe keys
- Add unit tests for signature merge, stable scope, and parallel tool ids
Trim call_id once for matching-function-response checks; use args.Value()
in synthetic model functionCall insertion; guard functionResponse lookup
when call_id is empty.
When HOME replay restores a cached function_call_part and the request
already contains the matching functionResponse, insert a synthetic
role=model content with functionCall (and thoughtSignature) immediately
before that response content instead of writing into the same index.
Add regression tests for user/model functionResponse shapes.
Add executor-scoped replay cache aligned with Codex HOME replay:
Scope, observe SSE/non-stream responses, store normalized thought_signature
and function_call_part items, apply on the next streamGenerateContent
request, and invalidate on invalid signature responses.
Gemini/flash/agent models use HOME replay; native per-part signature
replay is not wired on upstream/dev. Wire non-stream and stream paths
in antigravity_executor and purge expired entries from signature_cache.
Includes unit tests and HOME-provider-replay documentation.
Add executor-scoped replay cache aligned with Codex HOME replay:
Scope, observe SSE/non-stream responses, store normalized thought_signature
and function_call_part items, apply on the next streamGenerateContent
request, and invalidate on invalid signature responses.
Gemini/flash/agent models use HOME replay; native per-part signature
replay is not wired on upstream/dev. Wire non-stream and stream paths
in antigravity_executor and purge expired entries from signature_cache.
Includes unit tests and HOME-provider-replay documentation.
