PromptMaster

Setup

One connector URL. No key to paste, nothing to download.

Connect Claude

  1. Open Settings → Connectors → Add custom connector.
  2. Name it PromptMaster.
  3. Paste the URL below.
  4. A browser window opens — sign in. That's the whole authorisation step.

There is no API key. Access is tied to your sign-in, so a URL on its own grants nothing and you can revoke a client from the dashboard without rotating anything.

Other clients

Anything that speaks MCP works. For clients configured by file:

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Cursor, VS Code, Codex, Gemini CLI, Windsurf and Continue.dev all read a config of this shape, though the file location differs. Your ledger is shared across every client you connect.

Using it

Once connected, ask in plain language:

Use PromptMaster to make a post for acme about hidden onboarding costs.

You'll get back an assignment — archetype, palette, camera, canvas and constraints — computed against everything that brand has already posted. Build the concept from there.

When the concept is approved, log it:

Log that post.

Logging is what makes the next brief work. An unlogged post is invisible to the rotation, and a ledger with gaps drifts back toward sameness within a few posts.

Tools

ToolWhat it doesCredit
create_master_brief Assigns the next post and returns the full brief. 1
audit_and_log Checks finished copy against the countable gates and writes the ledger row. 1
review_asset Audits any visual's copy without logging it. Free
plan_campaign Projects the next N slots so you can plan a month. Free
brand_status Mechanism distribution, audit due date, credits left. Free

Your data

Export any brand's full ledger as JSON from the dashboard, on every plan including free. It's your posting history — you should be able to walk away with it.