MCP & Playwright MCP Fundamentals — quiz

A QA engineer asks 'why do I need MCP at all — can't an LLM just call any tool I expose to it?' Which answer best captures what MCP standardises?

• MCP is a proprietary Anthropic API that locks tools to a single model
• MCP is an open protocol that defines how AI clients discover and invoke tools, resources, and prompts from external servers using a uniform JSON-RPC schema — so the same Playwright server works with any MCP-aware client without bespoke glue code
• MCP is a replacement for HTTP that AI assistants speak directly to browsers
• MCP is only useful for chat interfaces and has nothing to do with tool calling