PasserJack help
Connect Cursor
Add PasserJack to Cursor with the install button, or by pasting a server into ~/.cursor/mcp.json.
Uses an API key from Settings.
Before you start
- A PasserJack account
- Cursor installed
- A PasserJack key with the permissions you mean to grant
Show the visual walkthrough
Step by step
- Open PasserJack, then Settings, then Agents and API keys, choose Cursor, press Create a key and fill this in, and copy the block.
- Press the install button beside the block, or paste the block into ~/.cursor/mcp.json yourself.
- Reload Cursor and check PasserJack is listed among its MCP servers.
- Current Cursor builds can also sign in through your browser with a localhost callback, which PasserJack accepts. An older build that opens a cursor:// link is using a callback PasserJack does not accept, so paste the block in that case.
What to paste
{
"mcpServers": {
"passerjack": {
"url": "https://passerjack.com/api/mcp",
"headers": {
"Authorization": "Bearer pj_paste-your-key-here"
}
}
}
}Create your key in Agents and API keys to fill in these blocks.
Preview the PasserJack screens

Open Agents and API keys and choose your agent. If you use an API key, each new key is shown exactly once.

This is the screen a browser sign-in lands on. It names the app that is asking and the permissions it wants, and nothing is granted until you approve it. Read covers your whole ordinary Board, including your attachments. The default edit limit protects items the app did not create from changes; it does not hide them from reads.
Check it worked
Ask the agent: who am I connected as?
A correct answer names your account email, the key or app it is using (for example “Grok - Sep 10, 2026”), and its permissions: read, write if granted, and secrets only if you granted it. If it cannot answer, or names a different account, the connection is not made, so go back through the steps.
Granted write access? Ask it to save a short test note, then confirm that note appears on your board.
Vault reads need both secrets permission and an Unlock for agents window you explicitly open in Vault settings. That permission also includes text and extracted details from sensitive Board images without a Vault window. Review the permission and capture boundaries before granting it.
Manage or disconnect
Open PasserJack, then Settings, then Agents and API keys. That page lists your keys, the apps you have connected and your connector credentials, and you revoke any of them from there.
A revoked key stops working immediately. If a client reports an authentication error, check which account it is signed in to and whether its key was revoked before you create another.