Should You Build Your Own MCP Server or Buy One?

Building an MCP server yourself is completely doable. The protocol isn't magic, the docs are public, and if you're a developer you can probably have something running in an afternoon. So the question isn't can you build it — it's whether you should.

Here's an honest breakdown of what you're actually signing up for when you go the build route, and where the math starts to tip toward buying.

What building it yourself actually means

You own the protocol layer. MCP is built on JSON-RPC 2.0 with a specific handshake — initialize, tools/list, tools/call — and specific error codes. You write that, and you maintain it as the spec evolves. When a client sends a malformed request and your error handling is off, your server is the thing that breaks.

You own auth. If any tool needs to act on behalf of a user — reading from Google Drive, posting to Slack, querying Salesforce — you build the OAuth flow yourself. Token exchange, PKCE, state encryption, redirect handling, token refresh. Per provider. And then you maintain it when providers update their flows.

Every change is a deployment. Want to rename a tool parameter? Update a description so the model picks the right tool more reliably? Adjust a timeout? Code push, CI run, deployment. For one-off changes this is fine. When you're iterating on tool descriptions to improve model behavior — which you will be — it becomes a real friction cost.

Observability is a separate build. Without it, you won't know which tools your agents are actually calling, how often, or where things fail. Structured logging for tool invocations doesn't come for free.

Each MCP is its own thing to operate. One server for your internal data, another for a customer environment, a third for a different product — each one is its own deployment, its own credentials to manage, its own thing to update when you rotate a key.

Where buying changes the math

Shredly is a managed MCP gateway. The protocol implementation, auth proxy, and routing are platform concerns — you configure what your tools do, not how the infrastructure works.

Iteration without deploys. Tool definitions live in configuration. Rename a parameter, update a description, add a tool — no code, no pipeline.

OAuth without building it. Shredly's auth proxy handles OAuth flows for upstream providers. You configure the integration; the platform handles token exchange, refresh, and storage.

One gateway, many servers. Multiple MCP servers route through one endpoint, addressed by slug. Five servers doesn't mean five stacks to maintain.

Structured logs out of the box. Every tool invocation is recorded. You can see what your agents are actually calling and where things fail.

When building makes sense

If you're building a single MCP for your own internal use, you own the codebase, and nobody else needs access — building is fine. The scope is contained, the maintenance is manageable, and you have full control.

When buying makes sense

The economics tip toward buying when any of these are true:

• You want to iterate on tool behavior without a deployment cycle slowing you down
• You need OAuth to third-party services and don't want to build and maintain that per provider
• You're running more than one MCP and don't want to operate parallel infrastructure
• You're building for other people to use, and need auth and observability from day one

The biggest hidden cost of building isn't the initial implementation — it's the ongoing maintenance surface. Keeping the protocol current, debugging auth edge cases, managing multiple deployments, building observability. Those hours add up fast on problems that feel like they should already be solved.

Shredly doesn't make the hard parts of building good tools easier. It makes the infrastructure parts — the parts that aren't your product — someone else's problem, so you can stay focused on the parts that are.