Dec 15, 2025

The Composio SDKs achieved a significant milestone with Tool Router moving from experimental to stable production status in December 2025. The Tool Router is now a fully supported feature that enables creating isolated MCP sessions with scoped toolkit access across both Python 0.10.1 and TypeScript 0.3.0.

Major Achievements

Native Tool Execution: Both SDKs now support direct tool execution through Tool Router sessions. The TypeScript implementation emphasizes improved type safety and error handling, while Python developers benefit from better integration with provider-wrapped tools.

Webhook Security: A new verification method was introduced. The system now provides secure webhook endpoint validation and signature verification for incoming webhooks, enhancing protection for trigger-based workflows.

Framework Compatibility: The stable Tool Router integrates with multiple AI platforms including OpenAI, Anthropic, LangChain, LlamaIndex, CrewAI, and Vercel AI SDK.

Technical Improvements

The TypeScript SDK resolved significant CommonJS compatibility issues by switching bundlers. This addresses a common developer pain point, particularly for Node.js projects not using ES modules.

The Python SDK extended LangChain provider support to version 1, while simultaneously fixing a critical KeyError occurring when SUPABASE_BETA_RUN_SQL_QUERY is used with Agents.

Migration Path

Users upgrading from experimental APIs should note the simplified approach—the Tool Router API now operates directly rather than through experimental namespaces, with comprehensive migration documentation provided.