Fastn UCL is a secure, enterprise-grade, multi-tenant MCP for SaaS that enables seamless integration of AI agents with the tools, APIs, and platforms your users rely on. By embedding Fastn UCL directly into your product, you can connect your AI agents to every tool your customers use, providing a unified command layer that supports systems like Slack, Gmail, Snowflake, and internal APIs. This integration offers built-in authentication, monitoring, and observability, ensuring secure and efficient operations across multiple tenants. With a schema-flexible design optimized for dynamic enterprise data, Fastn UCL delivers production-ready resilience with features like retries, timeouts, and batch processing, all while eliminating the need for local MCP server hosting. ([fastn.ai](https://fastn.ai/ucl?utm_source=openai))