Set-up guide · Cursor

Add Heropost to Cursor.
One link, pasted once.

Already use MCP in Cursor? Here’s where Heropost’s link goes. Works in the Cursor app.

Checked Sep 29, 2026 on a real account

2Where it goes in Cursor

  1. In the Cursor app, open Customize → MCPs and press New MCP Server. Cursor opens ~/.cursor/mcp.json.
  2. Add the heropost entry — keep any servers already in the file — and save:
{
  "mcpServers": {
    "heropost": {
      "url": "https://mcp.heropost.io/mcp/hp_ag_…"
    }
  }
}

Once it’s saved, heropost moves to Connected on the MCPs page.

Cursor · ~/.cursor/mcp.json (link hidden)
Cursor · ~/.cursor/mcp.json (link hidden)
Cursor · heropost, connected
Cursor · heropost, connected

3Try it

Ask CursorUse Heropost to create a draft post for Friday about …

Say use Heropost when you want something saved.

Then open Connect your AI tools → Activity in Heropost. A saved draft shows as create post · 1 action.

Good to know

Who can connect
Workspace owners and admins — they’re the ones who see Connect your AI tools.
How many tools
Every Heropost plan connects up to 3 AI tools, counted across all your workspaces. Agent Pro connects 10; Agent Agency has no limit. All in use? Remove one in the workspace where it’s connected, under Connect your AI tools → Your tools.
What it can do
You choose, in Your tools → Cursor → Permissions: drafts are always allowed; publishing, reading the inbox and which accounts are yours to switch. Replying in the inbox is on Agent Pro and Agency.
The link is the key
It’s shown once. New link replaces it and the old one stops working instantly; Remove cuts Cursor off.
What it costs
One action is one post saved or one reply sent. Reading, reporting and the writing itself are free.
Heropost shows “Error” on the MCPs page.
Make sure mcp.json is exactly the snippet from Heropost — it starts with { and ends with } — and that it’s saved. Show Output next to the error tells you why.
There’s nowhere to add it on cursor.com.
The cursor.com dashboard has no MCP settings. Use the Cursor app.
Your screen looks different?
Tell support, with a screenshot and any error text. We update this guide from real screenshots.
Last checked: the Cursor app for Mac (Sep 29, 2026; full test Sep 17, 2026), on a real Heropost workspace.