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MCP is the connection between your AI app and your Machines account.

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Before you start

  • sign in to your Machines account
  • open the AI app you want to use (Codex, Claude, or ChatGPT)
  • keep the Machines server URL ready

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Copy this value

https://mcp.machines.cash/mcp

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Step-by-step: Codex

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1) Open MCP settings

In Codex, open settings and choose to add a remote MCP server.
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2) Paste the server URL

https://mcp.machines.cash/mcp
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3) Finish sign-in

Complete the browser sign-in and approve access.
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4) Test it

Ask:
show my balance

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Step-by-step: Claude

1

1) Open MCP settings

In Claude, open settings and add a remote MCP server.
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2) Paste the server URL

https://mcp.machines.cash/mcp
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3) Finish sign-in

Complete the browser sign-in and approve access.
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4) Test it

Ask:
list my cards

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Step-by-step: ChatGPT

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1) Add a remote connector

In ChatGPT connector setup, add a remote MCP connector.
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2) Paste the server URL

https://mcp.machines.cash/mcp
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3) Finish sign-in

Complete the browser sign-in and approve access.
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4) Test it

Ask:
create a virtual card called subscriptions

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If browser sign-in does not work (fallback)

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1) Create a Consumer API key in Machines

In Machines, go to Identity/KYC and create a key.
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2) Paste the key in your AI app credential field

Some apps call this token, API key, or secret.
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3) If asked for auth format, use one of these

Authorization: Bearer <YOUR_CONSUMER_API_KEY>

X-Consumer-Key: <YOUR_CONSUMER_API_KEY>

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Need command-line setup?

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Troubleshooting

  • wrong server URL: use exactly
https://mcp.machines.cash/mcp
  • sign-in page closes early: reopen the connection flow and try again
  • still not connected: remove the Machines MCP server and add it again

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Keep your account safe

  • never share keys or tokens in chats, screenshots, or tickets
  • if you shared a key by mistake, revoke it and create a new one
  • only sign in from trusted Machines pages