Install in Claude

Claude on the web, the desktop app and Cowork share one custom connector. It takes about a minute. You sign in with your email; there is no key.

Rather not install anything? Build pitch reviews on the web with the same account.

Free, Pro and Max

1. In Claude, open Customize → Connectors.
2. Choose +, then Add custom connector. Name it Versusbrief and paste the URL https://versusbrief.com/mcp. Leave the advanced settings empty and choose Add.
3. Choose Connect. A Versusbrief page opens. Check that it names Claude and says you will go back to claude.ai. Enter your email and choose Allow. A new email gets a free account with 75 credits a month. An email that already has an account gets a one-time link: open it in this same browser.
4. In a chat, choose +, turn Versusbrief on, and ask: “Build a pitch for theirbusiness.co.uk in Didsbury, GB.”

Claude’s Free plan allows one custom connector. If you already use it for something else, use Versusbrief on the web instead.

Team and Enterprise

Only an Owner can add a custom connector: Organization settings → Connectors → Add → Custom → Web, paste https://versusbrief.com/mcp and choose Add. Each person then connects it and signs in with their own email.

What comes back

The review in the chat and as a page you can forward or print, plus a Google Ads Editor file for the proposed campaign. For one competitor in depth, ask: “Run a teardown of competitor.co.uk in Manchester, GB, for my client yourclient.co.uk.” On Pro and Agency the page carries your agency’s name and logo; set them once on your account page.

For reviewers

Cases that should succeed

• A pitch for a UK local domain with a city returns the prospect against at least two rivals from the map pack, a 90-day plan and a /p/ link.
• A teardown of a UK local domain returns keywords, Meta ads labeled EU/UK, a landing read, a three-point summary and a report link.
• keywords_for_domain returns position, volume and CPC in USD, with brand terms left out.
• export_campaign_draft for Google rejects a headline longer than 30 characters and returns no file.
• public_reviews_themes returns the rating, themes and quotes, and no author name.
• landing_audit names the pixels it found and the PageSpeed score when one exists.

Cases that should fail closed

• Meta ads outside the EU and UK say so and do not invent ads.
• A request to publish into an ad account is refused. Export returns a file only.
• A new brand past the plan cap returns the plans link and does not call a paid source.

Meta ads: EU/UK only. No phone.