Muse offers a connector path for Cardzen. When Cardzen asks you to review access, check the account, requested permissions, and the site you came from before approving.
Connect Cardzen
Ask Muse to create a Custom Connector for Cardzen without a directory listing, then review access in Cardzen.
Cardzen MCP server address: https://mcp.cardzen.ai/mcp
Suggested prompt for Muse:
Create a custom Cardzen connector using https://mcp.cardzen.ai/mcp. Use Cardzen's browser OAuth sign-in so I can understand my credit card rewards and which card to use. Do not change my wallet or credit tracking during setup.
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Ask Muse to create a custom Cardzen connector using the suggested prompt above. Muse may show an inline Cardzen Connector card with a Connect action.
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Choose Connect on that card, review Muse's Custom Connector notice, then choose Connect again. Never paste your Cardzen password or an OAuth token into the conversation.
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When Muse opens Cardzen's browser sign-in and access review, sign in or create a Free account, finish setup, and approve only if the request matches what you intended.
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Return to the original Muse conversation and try a read-only rewards or wallet question. If authorization or a read fails, contact Cardzen support; do not reuse a copied authorization URL.
If setup does not finish, contact Cardzen support.
Try Cardzen after connecting
Use Cardzen to compare the rewards on the credit cards in my wallet and explain which card fits a restaurant purchase. Don't change my cards or tracking.
Do not paste a Cardzen password, access token, authorization code, or copied Cardzen authorization URL into a Muse conversation. If you create a new Cardzen account during setup, your account and saved setup remain even if the request expires. Return to the original Muse conversation and start a fresh connection request.
For more about Muse connectors, see Meta's Muse Connector guidance.
Disconnect
Disconnect from Muse's Connector settings or revoke the exact Cardzen grant from Account & Settings -> MCP Integration. Revocation prevents that grant from making another successful Cardzen request.