MDN's MCP server launched June 15. Your editor's AI assistant can now pull documentation and browser-compatibility data live instead of answering from frozen training data.
What it fixes in practice
- Support tables the agent once invented from memory: compatibility rows now come from real BCD data.
- Feature snippets that worked in the training era, not in the browser you deploy to today.
- One reachable source for docs, so 'check the source' finally has one the tool can open.
Wire it once and measure the difference honestly: ask your agent for the support of a recent CSS feature and read the numbers it quotes back. Whatever you do, keep asking; the memorized answer will not improve and the tool's will.