Tools, resources, and prompts are different capabilities.
Tools are actions a model may request, such as querying an API or creating a record. Resources provide contextual data that an application can read or attach to a conversation. Prompts are reusable instructions that help a user or application start a known interaction. A good server exposes the smallest capability that makes the workflow useful.
That distinction matters for control. A read-only resource, an approved tool call, and a user-selected prompt do not carry the same operational risk. Treating every exposed item as an unrestricted action is a design mistake, especially when the server can reach customer data or production systems.
MCP is not an automatic trust layer.
Adding an MCP server does not make an external source accurate, safe, or authorized. The client still needs to decide which servers are trusted, which tools require approval, and which credentials are available. The server needs input validation, least-privilege access, useful errors, and a way to explain or record what happened.
It is also not the same thing as WebMCP. A remote MCP server is a service or process connected through an MCP transport. WebMCP is an emerging browser-native direction for pages to expose tools to web agents. The two can complement each other, but they solve different connection problems.
Use the model to choose the next article or build step.
If you need vocabulary, start with the architecture and primitives. If you need to build, move to a TypeScript or FastMCP server and then inspect it with MCP Inspector. If you need to connect a product, choose the client guide that matches your host and review its authentication and approval behavior before sharing credentials.
The reliable starting point is a narrow route with a visible outcome, a small tool set, and a named recovery owner. MCP gives the route a standard interface; the quality still comes from the design around it.