"""OpenAI Chat Completions transport. Handles the default api_mode ('chat_completions') used by ~16 OpenAI-compatible providers (OpenRouter, Nous, NVIDIA, Qwen, Ollama, DeepSeek, xAI, Kimi, etc.). Messages and tools are already in OpenAI format — convert_messages and convert_tools are near-identity. The complexity lives in build_kwargs which has provider-specific conditionals for max_tokens defaults, reasoning configuration, temperature handling, and extra_body assembly. """ import copy from typing import Any, Dict, List, Optional from agent.moonshot_schema import is_moonshot_model, sanitize_moonshot_tools from agent.prompt_builder import DEVELOPER_ROLE_MODELS from agent.transports.base import ProviderTransport from agent.transports.types import NormalizedResponse, ToolCall, Usage class ChatCompletionsTransport(ProviderTransport): """Transport for api_mode='chat_completions'. The default path for OpenAI-compatible providers. """ @property def api_mode(self) -> str: return "chat_completions" def convert_messages(self, messages: List[Dict[str, Any]], **kwargs) -> List[Dict[str, Any]]: """Messages are already in OpenAI format — sanitize Codex leaks only. Strips Codex Responses API fields (``codex_reasoning_items`` / ``codex_message_items`` on the message, ``call_id``/``response_item_id`` on tool_calls) that strict chat-completions providers reject with 400/422. """ needs_sanitize = False for msg in messages: if not isinstance(msg, dict): continue if "codex_reasoning_items" in msg or "codex_message_items" in msg: needs_sanitize = True break tool_calls = msg.get("tool_calls") if isinstance(tool_calls, list): for tc in tool_calls: if isinstance(tc, dict) and ("call_id" in tc or "response_item_id" in tc): needs_sanitize = True break if needs_sanitize: break if not needs_sanitize: return messages sanitized = copy.deepcopy(messages) for msg in sanitized: if not isinstance(msg, dict): continue msg.pop("codex_reasoning_items", None) msg.pop("codex_message_items", None) tool_calls = msg.get("tool_calls") if isinstance(tool_calls, list): for tc in tool_calls: if isinstance(tc, dict): tc.pop("call_id", None) tc.pop("response_item_id", None) return sanitized def convert_tools(self, tools: List[Dict[str, Any]]) -> List[Dict[str, Any]]: """Tools are already in OpenAI format — identity.""" return tools def build_kwargs( self, model: str, messages: List[Dict[str, Any]], tools: Optional[List[Dict[str, Any]]] = None, **params, ) -> Dict[str, Any]: """Build chat.completions.create() kwargs. This is the most complex transport method — it handles ~16 providers via params rather than subclasses. params: timeout: float — API call timeout max_tokens: int | None — user-configured max tokens ephemeral_max_output_tokens: int | None — one-shot override (error recovery) max_tokens_param_fn: callable — returns {max_tokens: N} or {max_completion_tokens: N} reasoning_config: dict | None request_overrides: dict | None session_id: str | None qwen_session_metadata: dict | None — {sessionId, promptId} precomputed model_lower: str — lowercase model name for pattern matching # Provider detection flags (all optional, default False) is_openrouter: bool is_nous: bool is_qwen_portal: bool is_github_models: bool is_nvidia_nim: bool is_kimi: bool is_custom_provider: bool ollama_num_ctx: int | None # Provider routing provider_preferences: dict | None # Qwen-specific qwen_prepare_fn: callable | None — runs AFTER codex sanitization qwen_prepare_inplace_fn: callable | None — in-place variant for deepcopied lists # Temperature fixed_temperature: Any — from _fixed_temperature_for_model() omit_temperature: bool # Reasoning supports_reasoning: bool github_reasoning_extra: dict | None # Claude on OpenRouter/Nous max output anthropic_max_output: int | None # Extra extra_body_additions: dict | None — pre-built extra_body entries """ # Codex sanitization: drop reasoning_items / call_id / response_item_id sanitized = self.convert_messages(messages) # Qwen portal prep AFTER codex sanitization. If sanitize already # deepcopied, reuse that copy via the in-place variant to avoid a # second deepcopy. is_qwen = params.get("is_qwen_portal", False) if is_qwen: qwen_prep = params.get("qwen_prepare_fn") qwen_prep_inplace = params.get("qwen_prepare_inplace_fn") if sanitized is messages: if qwen_prep is not None: sanitized = qwen_prep(sanitized) else: # Already deepcopied — transform in place if qwen_prep_inplace is not None: qwen_prep_inplace(sanitized) elif qwen_prep is not None: sanitized = qwen_prep(sanitized) # Developer role swap for GPT-5/Codex models model_lower = params.get("model_lower", (model or "").lower()) if ( sanitized and isinstance(sanitized[0], dict) and sanitized[0].get("role") == "system" and any(p in model_lower for p in DEVELOPER_ROLE_MODELS) ): sanitized = list(sanitized) sanitized[0] = {**sanitized[0], "role": "developer"} api_kwargs: Dict[str, Any] = { "model": model, "messages": sanitized, } timeout = params.get("timeout") if timeout is not None: api_kwargs["timeout"] = timeout # Temperature fixed_temp = params.get("fixed_temperature") omit_temp = params.get("omit_temperature", False) if omit_temp: api_kwargs.pop("temperature", None) elif fixed_temp is not None: api_kwargs["temperature"] = fixed_temp # Qwen metadata (caller precomputes {sessionId, promptId}) qwen_meta = params.get("qwen_session_metadata") if qwen_meta and is_qwen: api_kwargs["metadata"] = qwen_meta # Tools if tools: # Moonshot/Kimi uses a stricter flavored JSON Schema. Rewriting # tool parameters here keeps aggregator routes (Nous, OpenRouter, # etc.) compatible, in addition to direct moonshot.ai endpoints. if is_moonshot_model(model): tools = sanitize_moonshot_tools(tools) api_kwargs["tools"] = tools # max_tokens resolution — priority: ephemeral > user > provider default max_tokens_fn = params.get("max_tokens_param_fn") ephemeral = params.get("ephemeral_max_output_tokens") max_tokens = params.get("max_tokens") anthropic_max_out = params.get("anthropic_max_output") is_nvidia_nim = params.get("is_nvidia_nim", False) is_kimi = params.get("is_kimi", False) reasoning_config = params.get("reasoning_config") if ephemeral is not None and max_tokens_fn: api_kwargs.update(max_tokens_fn(ephemeral)) elif max_tokens is not None and max_tokens_fn: api_kwargs.update(max_tokens_fn(max_tokens)) elif is_nvidia_nim and max_tokens_fn: api_kwargs.update(max_tokens_fn(16384)) elif is_qwen and max_tokens_fn: api_kwargs.update(max_tokens_fn(65536)) elif is_kimi and max_tokens_fn: # Kimi/Moonshot: 32000 matches Kimi CLI's default api_kwargs.update(max_tokens_fn(32000)) elif anthropic_max_out is not None: api_kwargs["max_tokens"] = anthropic_max_out # Kimi: top-level reasoning_effort (unless thinking disabled) if is_kimi: _kimi_thinking_off = bool( reasoning_config and isinstance(reasoning_config, dict) and reasoning_config.get("enabled") is False ) if not _kimi_thinking_off: _kimi_effort = "medium" if reasoning_config and isinstance(reasoning_config, dict): _e = (reasoning_config.get("effort") or "").strip().lower() if _e in ("low", "medium", "high"): _kimi_effort = _e api_kwargs["reasoning_effort"] = _kimi_effort # extra_body assembly extra_body: Dict[str, Any] = {} is_openrouter = params.get("is_openrouter", False) is_nous = params.get("is_nous", False) is_github_models = params.get("is_github_models", False) provider_prefs = params.get("provider_preferences") if provider_prefs and is_openrouter: extra_body["provider"] = provider_prefs # Kimi extra_body.thinking if is_kimi: _kimi_thinking_enabled = True if reasoning_config and isinstance(reasoning_config, dict): if reasoning_config.get("enabled") is False: _kimi_thinking_enabled = False extra_body["thinking"] = { "type": "enabled" if _kimi_thinking_enabled else "disabled", } # Reasoning if params.get("supports_reasoning", False): if is_github_models: gh_reasoning = params.get("github_reasoning_extra") if gh_reasoning is not None: extra_body["reasoning"] = gh_reasoning else: if reasoning_config is not None: rc = dict(reasoning_config) if is_nous and rc.get("enabled") is False: pass # omit for Nous when disabled else: extra_body["reasoning"] = rc else: extra_body["reasoning"] = {"enabled": True, "effort": "medium"} if is_nous: extra_body["tags"] = ["product=hermes-agent"] # Ollama num_ctx ollama_ctx = params.get("ollama_num_ctx") if ollama_ctx: options = extra_body.get("options", {}) options["num_ctx"] = ollama_ctx extra_body["options"] = options # Ollama/custom think=false if params.get("is_custom_provider", False): if reasoning_config and isinstance(reasoning_config, dict): _effort = (reasoning_config.get("effort") or "").strip().lower() _enabled = reasoning_config.get("enabled", True) if _effort == "none" or _enabled is False: extra_body["think"] = False if is_qwen: extra_body["vl_high_resolution_images"] = True # Merge any pre-built extra_body additions additions = params.get("extra_body_additions") if additions: extra_body.update(additions) if extra_body: api_kwargs["extra_body"] = extra_body # Request overrides last (service_tier etc.) overrides = params.get("request_overrides") if overrides: api_kwargs.update(overrides) return api_kwargs def normalize_response(self, response: Any, **kwargs) -> NormalizedResponse: """Normalize OpenAI ChatCompletion to NormalizedResponse. For chat_completions, this is near-identity — the response is already in OpenAI format. extra_content on tool_calls (Gemini thought_signature) is preserved via ToolCall.provider_data. reasoning_details (OpenRouter unified format) and reasoning_content (DeepSeek/Moonshot) are also preserved for downstream replay. """ choice = response.choices[0] msg = choice.message finish_reason = choice.finish_reason or "stop" tool_calls = None if msg.tool_calls: tool_calls = [] for tc in msg.tool_calls: # Preserve provider-specific extras on the tool call. # Gemini 3 thinking models attach extra_content with # thought_signature — without replay on the next turn the API # rejects the request with 400. tc_provider_data: Dict[str, Any] = {} extra = getattr(tc, "extra_content", None) if extra is None and hasattr(tc, "model_extra"): extra = (tc.model_extra or {}).get("extra_content") if extra is not None: if hasattr(extra, "model_dump"): try: extra = extra.model_dump() except Exception: pass tc_provider_data["extra_content"] = extra tool_calls.append(ToolCall( id=tc.id, name=tc.function.name, arguments=tc.function.arguments, provider_data=tc_provider_data or None, )) usage = None if hasattr(response, "usage") and response.usage: u = response.usage usage = Usage( prompt_tokens=getattr(u, "prompt_tokens", 0) or 0, completion_tokens=getattr(u, "completion_tokens", 0) or 0, total_tokens=getattr(u, "total_tokens", 0) or 0, ) # Preserve reasoning fields separately. DeepSeek/Moonshot use # ``reasoning_content``; others use ``reasoning``. Downstream code # (_extract_reasoning, thinking-prefill retry) reads both distinctly, # so keep them apart in provider_data rather than merging. reasoning = getattr(msg, "reasoning", None) reasoning_content = getattr(msg, "reasoning_content", None) provider_data: Dict[str, Any] = {} if reasoning_content: provider_data["reasoning_content"] = reasoning_content rd = getattr(msg, "reasoning_details", None) if rd: provider_data["reasoning_details"] = rd return NormalizedResponse( content=msg.content, tool_calls=tool_calls, finish_reason=finish_reason, reasoning=reasoning, usage=usage, provider_data=provider_data or None, ) def validate_response(self, response: Any) -> bool: """Check that response has valid choices.""" if response is None: return False if not hasattr(response, "choices") or response.choices is None: return False if not response.choices: return False return True def extract_cache_stats(self, response: Any) -> Optional[Dict[str, int]]: """Extract OpenRouter/OpenAI cache stats from prompt_tokens_details.""" usage = getattr(response, "usage", None) if usage is None: return None details = getattr(usage, "prompt_tokens_details", None) if details is None: return None cached = getattr(details, "cached_tokens", 0) or 0 written = getattr(details, "cache_write_tokens", 0) or 0 if cached or written: return {"cached_tokens": cached, "creation_tokens": written} return None # Auto-register on import from agent.transports import register_transport # noqa: E402 register_transport("chat_completions", ChatCompletionsTransport)