When Composio needed to scale their Model Context Protocol (MCP) servers to handle massive growth, they migrated to Vercel Functions. Infrastructure headaches disappeared and deployment times dropped from 10 minutes to 2 minutes.
Composio delivers instant, fully managed access to over 250 Apps via Model Context Protocol (MCP) servers with 10,000+ actions - enabling AI agents to effortlessly interact with popular SaaS and system tools.
As one of the largest MCP providers, Composio uniquely hosts dedicated MCP servers for each integration, managing authentication, rate limiting, and multi-tenant isolation at scale.
Explore MCP RegistryThe Model Context Protocol (MCP) standardizes interactions between AI models and external tools via a straightforward JSON-RPC interface.
"We were constantly firefighting infrastructure issues instead of building features."
"We have long admired Vercel for their exceptional developer experience, streamlined deployment workflows, and dedication to modern development practices."
Initially, MCP's requirement for long-lived SSE connections seemed incompatible with serverless functions. This changed when Vercel introduced native MCP support with the mcp-adapter and Streamable HTTP.
| Challenge | Vercel Solution | Impact |
|---|---|---|
| Slow deployments | Integrated CI/CD with instant rollbacks | 10 minutes → 2 minutes |
| Limited feedback loops | Preview deployments for every PR | Faster iteration & collaboration |
| Complex MCP scaling | Native MCP adapter + Streamable HTTP | Eliminated custom scaling logic |
| SSR management overhead | Managed SSR with optimized edge caching | Zero maintenance overhead |
| Security concerns | Built-in DDoS protection and firewall | Enhanced security without config |
"The migration was remarkably smooth, with no significant initial hurdles. We migrated our entire MCP infrastructure to Vercel in just 3–4 hours, significantly exceeding our expectations."
Down from 10 minutes
Live testing environments
Time spent on infrastructure
Initially, the migration to serverless resulted in higher infrastructure costs due to the nature of SSE connections in a serverless environment. However, this created an opportunity for optimization.
Working closely with Vercel, Composio transitioned customers from SSE to Streamable HTTP, resulting in better performance and lower costs.
By end of month, Streamable HTTP will be the sole supported protocol, with costs continuing to decrease as adoption increases.
Custom infrastructure requires significant engineering overhead that doesn't differentiate your product. Let someone else handle the plumbing.
While SSE works, Streamable HTTP provides better serverless economics and performance. The right protocol matters for long-term success.
Fast deployments and preview environments compound productivity gains over time. Small improvements create big advantages.
Infrastructure decisions made early can become bottlenecks later. Choose platforms that scale with your success, not against it.
"All of this aligns perfectly with our team's culture: Build fast, ship quality, and lean on great tools instead of reinventing them."
Learn more about Vercel's MCP support and see how we can help you focus on building instead of managing infrastructure.