{"record":{"id":"017f97cdb59db3c4","repo":"BerriAI/litellm","slug":"missing-anthropic-api-key-a-call-is-being-made-t","errorCode":null,"errorMessage":"Missing Anthropic API Key - A call is being made to anthropic but no key is set either in the environment variables or via params","messagePattern":"Missing Anthropic API Key - A call is being made to anthropic but no key is set either in the environment variables or via params","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"litellm/llms/anthropic/batches/transformation.py","lineNumber":50,"sourceCode":"        \"\"\"Return the LLM provider type for this configuration.\"\"\"\n        return LlmProviders.ANTHROPIC\n\n    def validate_environment(\n        self,\n        headers: dict,\n        model: str,\n        messages: list[AllMessageValues],\n        optional_params: dict,\n        litellm_params: dict,\n        api_key: str | None = None,\n        api_base: str | None = None,\n    ) -> dict:\n        \"\"\"Validate and prepare environment-specific headers and parameters.\"\"\"\n        if api_base is None and isinstance(litellm_params, dict):\n            api_base = litellm_params.get(\"api_base\")\n        auth_header: Final = self.anthropic_model_info.get_auth_header(api_key, api_base)\n        if auth_header is None:\n            raise ValueError(\n                \"Missing Anthropic API Key - A call is being made to anthropic but no key is set either in the environment variables or via params\"\n            )\n        _headers: Final = {\n            \"accept\": \"application/json\",\n            \"anthropic-version\": \"2023-06-01\",\n            \"content-type\": \"application/json\",\n        }\n        _headers.update(auth_header)\n        # Add beta header for message batches\n        if \"anthropic-beta\" not in headers:\n            headers[\"anthropic-beta\"] = \"message-batches-2024-09-24\"\n        headers.update(_headers)\n        return headers\n\n    def get_complete_batch_url(\n        self,\n        api_base: str | None,\n        api_key: str | None,","sourceCodeStart":32,"sourceCodeEnd":68,"githubUrl":"https://github.com/BerriAI/litellm/blob/6c2dcb801bf2b75c18f1bb24140e7cf57465cc4d/litellm/llms/anthropic/batches/transformation.py#L32-L68","documentation":"Error \"Missing Anthropic API Key - A call is being made to anthropic but no key is set either in the environment variables or via params\" thrown in BerriAI/litellm.","triggerScenarios":"Thrown at litellm/llms/anthropic/batches/transformation.py:50 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set ANTHROPIC_API_KEY in the environment or pass api_key."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"6c2dcb801bf2b75c18f1bb24140e7cf57465cc4d","analyzedAt":"2026-08-15T07:12:03.035Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}