KosmoKrator

payments

PayPal MCP Integration for LangGraph

Connect PayPal to LangGraph through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write Bearer token auth
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Connect PayPal to LangGraph

Run KosmoKrator integration calls from LangGraph nodes while preserving local credentials and permissions.

Use a graph node that calls the KosmoKrator CLI for deterministic steps or an MCP client for dynamic tool selection. The gateway is local, scoped to this integration, and starts with --write=deny so LangGraph can inspect read-capable tools without receiving write access by default.

PayPal MCP Config for LangGraph

Headless CLI calls fit repeatable graph edges; MCP fits exploratory agent nodes.

{
  "mcpServers": {
    "kosmokrator-paypal": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=paypal",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=paypal --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only PayPal instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

PayPal Tools Visible to LangGraph

LangGraph sees stable MCP tool names generated from the PayPal integration catalog.

MCP toolSource functionTypeDescription
integration__paypal__paypal_list_orders paypal.paypal_list_orders Read List PayPal checkout orders. Returns order IDs, statuses, and amounts. Use filters to narrow results by status or date range.
integration__paypal__paypal_get_order paypal.paypal_get_order Read Get details of a specific PayPal checkout order by its order ID. Returns full order information including status, payer details, and line items.
integration__paypal__paypal_create_order paypal.paypal_create_order Write Create a new PayPal checkout order. Specify the intent, purchase units with amounts, and optional payer details. Returns the created order with approval links.
integration__paypal__paypal_list_payments paypal.paypal_list_payments Read List PayPal payments. Returns payment IDs, states, amounts, and transaction details. Use filters to narrow results by count or date range.
integration__paypal__paypal_get_payment paypal.paypal_get_payment Read Get details of a specific PayPal payment by its payment ID. Returns full payment information including state, amount, payer details, and transactions.
integration__paypal__paypal_list_invoices paypal.paypal_list_invoices Read List PayPal invoices. Returns invoice IDs, numbers, statuses, amounts, and recipient details. Use pagination parameters to navigate through results.
integration__paypal__paypal_get_current_user paypal.paypal_get_current_user Read Get the authenticated PayPal user's profile information. Returns the user's name, email, and other account details.

Related PayPal Pages

PayPal CLIUse direct JSON commands instead of MCP discovery. PayPal MCPFull gateway reference and MCP tool names. KosmoKrator for LangGraphClient-level gateway setup.