@composio/mastra + Zod v4 Tool Router Test

Verifies that @composio/mastra works correctly with zod@4 in a Tool Router workflow.

Why This Exists

Issue #2109 tracks Mastra integration support. The @composio/mastra provider must work with both Zod v3 and v4. This suite ensures:

• MastraProvider integrates correctly with Composio core
• MCP client can connect to Composio's Tool Router endpoint
• Mastra Agent can use Composio tools via MCP
• Structured output with Zod v4 schemas works correctly

What It Tests

Test Setup

This test runs directly in Bun (no Docker fixtures). It imports packages from the monorepo workspace and makes real API calls:

import { Composio } from '@composio/core';
import { MastraProvider } from '@composio/mastra';
import { MCPClient } from '@mastra/mcp';
import { Agent } from '@mastra/core/agent';
import { createOpenAI } from '@ai-sdk/openai';
import { z } from 'zod';

Required environment variables:

• COMPOSIO_API_KEY - Composio API key for Tool Router
• OPENAI_API_KEY - OpenAI API key for agent LLM calls

Isolation Tool

Docker with Node.js versions: 22.12.0.

Running

pnpm test:e2e