44563fce5b
Reverts ArcadeAI/arcade-mcp#759 <!-- CURSOR_SUMMARY --> --- > [!NOTE] > **Medium Risk** > Adds a new LangChain/LangGraph integration layer that wraps and executes Arcade tools, including authorization and error/interrupt handling; bugs here could impact tool execution semantics for adopters. Changes are mostly additive and scoped to `contrib/langchain`. > > **Overview** > Re-introduces a standalone `contrib/langchain` Python package (`langchain-arcade`) to expose Arcade tools as LangChain `StructuredTool`s. > > Adds sync/async `ToolManager` implementations plus utilities to generate Pydantic arg schemas from `ToolDefinition`, optionally rewrite tool names (underscores vs dots), and handle authorization via LangGraph `NodeInterrupt` or structured error responses. > > Includes packaging/dev scaffolding (`pyproject.toml`, `tox.ini`, `Makefile`, `.gitignore`, `LICENSE`, `README`) and a comprehensive test suite covering manager behaviors and auth flows. > > <sup>Written by [Cursor Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit abd23b6d954470cb1e7376158468c0e59cdc7d7a. This will update automatically on new commits. Configure [here](https://cursor.com/dashboard?tab=bugbot).</sup> <!-- /CURSOR_SUMMARY -->
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