Looking for Muse Code?
Muse Code, Meta’s coding agent for the terminal, connects to PostQueen with one settings entry.
Before you start
- Plans: Muse is free with a usage limit. Power costs $20 a month and Maximum $100 a month. Meta does not tie connectors to a plan.
- Platforms: the Muse app on iOS and Android, muse.ai on the web, WhatsApp and Mac. Muse is available in the US and Canada, and not in every location yet.
- A PostQueen API key. A workspace admin copies it from Connections.
Where the API key is: in the app, open Connections > API key. Only a workspace Admin or Super Admin can reveal or rotate it; other members see it masked. A workspace has one key, and each agent card on Connections shows your MCP address with the key already filled in.
How Muse connects
Through a custom connector that Muse builds with you in chat. Meta also reviews connectors for its directory, and PostQueen is not listed there yet.Connect with a custom connector
These are the steps Meta documents for a service that is not in the Connector list.1
Copy your PostQueen API key
In PostQueen, open Connections > API key and copy the key. Only a workspace admin can reveal it.
2
Ask Muse to create a custom connector
In a Muse chat, ask Muse to create a custom connector for PostQueen. Muse guides you through it and may look up PostQueen’s API information.
3
Keep the key in the Secure Credentials Store
Muse keeps your API key in its Secure Credentials Store, away from the model. Give Muse the key only when it asks to store it there, never in a chat message.
4
Choose what Muse may do
Muse asks before a connector acts. Choose Allow once, Allow for this task or Always allow, and change it later under Settings > Permissions.
Good to know
- Settings > Connectors lists only connectors Meta has reviewed. Pasting PostQueen’s address there does not work the way it does in Claude. Ask Muse in chat instead.
- Only a workspace admin can connect PostQueen. The API key is shown to admins only, and it gives full access to the workspace.
Try this first
The first message to send is the one that starts the custom connector:Troubleshooting
More fixes are on Troubleshooting agents.
Is it the same as Muse Code?
No. Meta ships two agents with the Muse name, and they connect to PostQueen in different ways:Next steps
Every agent
Which agents can post to PostQueen, and how each one connects.
The MCP tools
What each of the 25 tools does, and what an agent cannot do.
Prompts and tool calls
The order an agent calls the tools in, with prompts that work.
Troubleshooting agents
What to do when a connection or a command fails.