Your key is ready.

Add it to your coding agent and ask for a page. The agent reads the guidelines, picks a theme and pulls the sections. Your subscription is confirmed. Here is how to connect it.

  • Find your key

    It starts with LEXMCP- and is in your Polar receipt email. You can always see it again in the Polar portal.

    Open Polar

  • Add the server

    Paste the key into the bearer header in Cursor, Claude Code or Codex. The snippets for each client are on the MCP page.

    See the setup

  • Ask for a page

    Something like "Build a landing page for a bookkeeping app with the Lexington MCP." The agent picks a theme, pulls the sections and fills them.

    Read the docs

Good to know. A few things that save you a prompt.

  • One theme per page

    Mixing themes reads as two websites. The agent knows this; if it wanders, say "stay in one theme".

  • The section is right

    Copy, images and links are yours to change. If something looks off after install, it's almost always a missing font or the tokens file.

  • Not Astro?

    Ask for "format html" and you get the same section with every class expanded, ready for React, Vue or Svelte.

  • Fair use

    1,000 section pulls per key per month. Team plans have five keys.

Something missing? Cancel anytime, what the agent wrote stays yours.

Open Polar Contact support