agent-payment

Name: agent-payment
Author: evidai

evidai

Get started Repository

Let your AI agent pay for any MCP/API per call — card-funded, spend-capped, no crypto. `npx create-lemon-mcp` to start.

Setup

Choose your client, copy the config, then fill in any required environment variables.

Add to Cursor Add to VS Code

claude mcp add agent-payment --env ALPACA_API_KEY='<ALPACA_API_KEY>' --env ALPACA_SECRET_KEY='<ALPACA_SECRET_KEY>' --env POLYMARKET_PRIVATE_KEY='<POLYMARKET_PRIVATE_KEY>' --env LEMON_CAKE_BUYER_JWT='<LEMON_CAKE_BUYER_JWT>' --env SOLANA_WALLET_PRIVATE_KEY='<SOLANA_WALLET_PRIVATE_KEY>' -- npx -y agent-payment-mcp

~/.codex/config.toml

[mcp_servers.agent-payment]
command = "npx"
args = ["-y", "agent-payment-mcp"]
env = { ALPACA_API_KEY = "<ALPACA_API_KEY>", ALPACA_SECRET_KEY = "<ALPACA_SECRET_KEY>", POLYMARKET_PRIVATE_KEY = "<POLYMARKET_PRIVATE_KEY>", LEMON_CAKE_BUYER_JWT = "<LEMON_CAKE_BUYER_JWT>", SOLANA_WALLET_PRIVATE_KEY = "<SOLANA_WALLET_PRIVATE_KEY>" }

# codex mcp add agent-payment --env ALPACA_API_KEY='<ALPACA_API_KEY>' --env ALPACA_SECRET_KEY='<ALPACA_SECRET_KEY>' --env POLYMARKET_PRIVATE_KEY='<POLYMARKET_PRIVATE_KEY>' --env LEMON_CAKE_BUYER_JWT='<LEMON_CAKE_BUYER_JWT>' --env SOLANA_WALLET_PRIVATE_KEY='<SOLANA_WALLET_PRIVATE_KEY>' -- npx -y agent-payment-mcp

~/.cursor/mcp.json

{
  "mcpServers": {
    "agent-payment": {
      "command": "npx",
      "args": [
        "-y",
        "agent-payment-mcp"
      ],
      "env": {
        "ALPACA_API_KEY": "<ALPACA_API_KEY>",
        "ALPACA_SECRET_KEY": "<ALPACA_SECRET_KEY>",
        "POLYMARKET_PRIVATE_KEY": "<POLYMARKET_PRIVATE_KEY>",
        "LEMON_CAKE_BUYER_JWT": "<LEMON_CAKE_BUYER_JWT>",
        "SOLANA_WALLET_PRIVATE_KEY": "<SOLANA_WALLET_PRIVATE_KEY>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "agent-payment": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "agent-payment-mcp"
      ],
      "env": {
        "ALPACA_API_KEY": "<ALPACA_API_KEY>",
        "ALPACA_SECRET_KEY": "<ALPACA_SECRET_KEY>",
        "POLYMARKET_PRIVATE_KEY": "<POLYMARKET_PRIVATE_KEY>",
        "LEMON_CAKE_BUYER_JWT": "<LEMON_CAKE_BUYER_JWT>",
        "SOLANA_WALLET_PRIVATE_KEY": "<SOLANA_WALLET_PRIVATE_KEY>"
      }
    }
  }
}

~/.gemini/settings.json

{
  "mcpServers": {
    "agent-payment": {
      "command": "npx",
      "args": [
        "-y",
        "agent-payment-mcp"
      ],
      "env": {
        "ALPACA_API_KEY": "<ALPACA_API_KEY>",
        "ALPACA_SECRET_KEY": "<ALPACA_SECRET_KEY>",
        "POLYMARKET_PRIVATE_KEY": "<POLYMARKET_PRIVATE_KEY>",
        "LEMON_CAKE_BUYER_JWT": "<LEMON_CAKE_BUYER_JWT>",
        "SOLANA_WALLET_PRIVATE_KEY": "<SOLANA_WALLET_PRIVATE_KEY>"
      }
    }
  }
}

claude_desktop_config.json

{
  "mcpServers": {
    "agent-payment": {
      "command": "npx",
      "args": [
        "-y",
        "agent-payment-mcp"
      ],
      "env": {
        "ALPACA_API_KEY": "<ALPACA_API_KEY>",
        "ALPACA_SECRET_KEY": "<ALPACA_SECRET_KEY>",
        "POLYMARKET_PRIVATE_KEY": "<POLYMARKET_PRIVATE_KEY>",
        "LEMON_CAKE_BUYER_JWT": "<LEMON_CAKE_BUYER_JWT>",
        "SOLANA_WALLET_PRIVATE_KEY": "<SOLANA_WALLET_PRIVATE_KEY>"
      }
    }
  }
}

.trae/mcp.json

{
  "mcpServers": {
    "agent-payment": {
      "command": "npx",
      "args": [
        "-y",
        "agent-payment-mcp"
      ],
      "env": {
        "ALPACA_API_KEY": "<ALPACA_API_KEY>",
        "ALPACA_SECRET_KEY": "<ALPACA_SECRET_KEY>",
        "POLYMARKET_PRIVATE_KEY": "<POLYMARKET_PRIVATE_KEY>",
        "LEMON_CAKE_BUYER_JWT": "<LEMON_CAKE_BUYER_JWT>",
        "SOLANA_WALLET_PRIVATE_KEY": "<SOLANA_WALLET_PRIVATE_KEY>"
      }
    }
  }
}

Environment variables

ALPACA_API_KEY
ALPACA_SECRET_KEY
POLYMARKET_PRIVATE_KEY
LEMON_CAKE_BUYER_JWT
SOLANA_WALLET_PRIVATE_KEY

Replace the placeholders with your own credentials and keep them out of version control.

Setup

Environment variables

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