Do You Need an MCP Server for Your Product?

Short summary

You should build an MCP server only if external AI agents need to call your product directly on a user's behalf — not if you just want an internal AI feature. MCP, Anthropic's open standard for connecting agents to external tools, lets you expose a fixed set of product actions as callable tools that any MCP-compatible agent can discover and use. For most SaaS products, a well-documented REST API with OpenAPI spec is sufficient; MCP is worth the effort only when selling to technical buyers running their own agent stacks, building agent-orchestration platforms, or pitching AI-native integration.

• •Build an MCP server only when external agents need to call your product as a tool, not a website
• •MCP exposes existing API capabilities in a standard, discoverable format for any compatible agent
• •Tool design — deciding what to expose and at what granularity — is the hardest part, not the protocol

Generated with AI, which can make mistakes.