Top MCP Gateways for AI Agents in SaaS Products: 2026 Comparison

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Model Context Protocol (MCP) has become an open standard for linking AI agents to external tools, prompting the rise of MCP gateways that manage and govern traffic between agents and MCP servers. Two primary use cases have emerged: internal enterprise governance and connecting customer-facing agents in SaaS products to third-party user accounts. Leading options for SaaS use cases include Arcade.dev, which offers agent-native authentication and tool execution, Composio, which provides over 1,500 managed toolkits though it suffered a security incident in May 2026 affecting around 5,000 GitHub connections, and Pipedream MCP, which supports over 10,000 tools across 3,000-plus APIs. For teams whose main need is per-user API integration, platforms like Nango can expose pre-built tools directly to agents over MCP, potentially eliminating the need for a separate gateway. The July 2026 MCP specification update further simplified gateway operations by introducing stateless requests and exposing method and tool names in HTTP headers.

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