# MCP connector Paybox speaks the **Model Context Protocol**. Add one URL to your agent's connector list, sign in once, and the agent gets scoped, passkey-gated access to your wallets, cards, and secrets. ## The URL ```txt https://api.paybox.sh/mcp ``` It's a **streamable HTTP** MCP endpoint (protocol version `2025-06-18`). ## Steps ::::steps ### Add the URL At `claude.ai/new#settings/customize-connectors` (Customize → Connectors), `grok.com/connectors`, or your agent's equivalent, paste the MCP URL above as a custom connector. ### Sign in Your agent opens Paybox in a tab. Sign in (email + passkey) and **approve a scoped grant** on just the credentials you want this agent to use, with an approval mode per credential. ### Stay in control Above-threshold and sensitive operations pause for your passkey. Every operation is an audit event. Revoke the connector from the app's **Clients** screen at any time. :::: ## How it works The MCP endpoint is the agent's whole interface to Paybox. Adding the URL drives an **[OAuth 2.1 + PKCE](/connect/oauth)** flow under the hood: the client registers dynamically, you consent to a scoped grant, and the client receives an access token it presents as `Authorization: Bearer …` on every call. From there the agent calls the **[MCP tools](/reference/mcp-tools)** — `list_credentials`, `request_payment`, `claim_payment_credentials`, `request_wallet_sign`, `request_secret`, `request_swap`, `get_portfolio`, `verify_solana_balance`, `get_buy_link`, the x402 tools (`discover_services`, `pay_x402`, `use_service`), `request_account_change`, `get_request`, and `list_requests` — plus any **[plugin tools](/reference/mcp-tools#plugin-tools)** the user has enabled, discovered through the standard MCP `tools/list`. All the same approval, policy, and audit rules apply, and wallet signing happens in an in-chat **[signing window](/concepts/requests#the-signing-window)** so the key never leaves MoonX MPC. :::tip New to the flow? **[Request lifecycle](/concepts/requests)** explains the submit → approve → poll pattern every tool follows. :::