{"record":{"id":"fa986376c34fd0b2","repo":"crewAIInc/crewAI","slug":"you-need-to-provide-at-least-one-app-name","errorCode":null,"errorMessage":"You need to provide at least one app name","messagePattern":"You need to provide at least one app name","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"lib/crewai-tools/src/crewai_tools/tools/composio_tool/composio_tool.py","lineNumber":106,"sourceCode":"                action_schema.parameters.model_dump(\n                    exclude_none=True,\n                )\n            ),\n            composio_action=function,\n            **kwargs,\n        )\n\n    @classmethod\n    def from_app(\n        cls,\n        *apps: t.Any,\n        tags: list[str] | None = None,\n        use_case: str | None = None,\n        **kwargs: t.Any,\n    ) -> list[te.Self]:\n        \"\"\"Create toolset from an app.\"\"\"\n        if len(apps) == 0:\n            raise ValueError(\"You need to provide at least one app name\")\n\n        if use_case is None and tags is None:\n            raise ValueError(\"Both `use_case` and `tags` cannot be `None`\")\n\n        if use_case is not None and tags is not None:\n            raise ValueError(\n                \"Cannot use both `use_case` and `tags` to filter the actions\"\n            )\n\n        from composio import ComposioToolSet\n\n        toolset = ComposioToolSet()\n        if use_case is not None:\n            return [\n                cls.from_action(action=action, **kwargs)\n                for action in toolset.find_actions_by_use_case(*apps, use_case=use_case)\n            ]\n","sourceCodeStart":88,"sourceCodeEnd":124,"githubUrl":"https://github.com/crewAIInc/crewAI/blob/754d7323beb2fd042e33444a115ea2d5a47193f0/lib/crewai-tools/src/crewai_tools/tools/composio_tool/composio_tool.py#L88-L124","documentation":"Error \"You need to provide at least one app name\" thrown in crewAIInc/crewAI.","triggerScenarios":"Thrown at lib/crewai-tools/src/crewai_tools/tools/composio_tool/composio_tool.py:106 when the library encounters an invalid state.","commonSituations":"Occurs when ComposioTool is created without any app names. Pass at least one app name to the constructor.","solutions":["Pass at least one app name when constructing the Composio tool."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"754d7323beb2fd042e33444a115ea2d5a47193f0","analyzedAt":"2026-08-15T04:06:56.746Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}