monospay

Your AI agent can send payments.
pip install monospay · Your agent can pay.

Get started

Claude Desktop — paste into your config, done:

{
  "mcpServers": {
    "monospay": {
      "command": "npx",
      "args": ["-y", "monospay-mcp"],
      "env": { "MONO_API_KEY": "mono_live_..." }
    }
  }
}

Restart Claude Desktop. Ask: "Check my monospay balance"

Ready to move money? Add your private key:

{
  "mcpServers": {
    "monospay": {
      "command": "npx",
      "args": ["-y", "monospay-mcp"],
      "env": {
        "MONO_API_KEY": "mono_live_...",
        "MONO_PRIVATE_KEY": "0x..."
      }
    }
  }
}

Then ask: "Send $1.00 to 0x..."

With API key only	+ Private Key
✅ Check balance	✅ Check balance
✅ View transactions	✅ View transactions
✅ Set spending limits	✅ Set spending limits
❌ Send payments	✅ Send payments

Claude Code — one command:

claude mcp add monospay -e MONO_API_KEY=mono_live_... -- npx -y monospay-mcp

Python SDK — 3 lines of code:

pip install monospay

from mono_sdk import MonoClient
client = MonoClient(api_key="mono_live_...")
client.signed_transfer(to_wallet="0x...", amount=1.00, private_key="0x...")

Dashboard — no code, manage everything in your browser:
monospay.com/dashboard

Get your API key at monospay.com/dashboard → Agents → Issue API key.

Why monospay

10 minutes to first payment — paste config or pip install, your agent pays
Works with every AI framework — LangChain, CrewAI, OpenAI, Claude, Cursor, Google ADK
Sub-cent transactions — no $0.30 minimum like card networks
Agents don't need bank accounts — just a wallet and a private key
You stay in control — spending limits, daily budgets, transaction history

Python SDK — Quickstart

from mono_sdk import MonoClient

# Each agent has its own API key (from dashboard -> Agents -> Issue API key)
agent_a = MonoClient(api_key="mono_live_...")

# Agent A checks its balance
balance = agent_a.balance()
print(f"Budget: ${balance['available_usdc']}")  # -> Budget: $50.00

# Agent A pays Agent B
result = agent_a.signed_transfer(
    to_wallet="0x...",
    amount=1.50,
    private_key="0x...",
)
print(result["transaction_id"])

No wallets to manage. No gas. No KYC.

2-Agent Example

from mono_sdk import MonoClient

agent_a = MonoClient(api_key="mono_live_A...")
agent_b = MonoClient(api_key="mono_live_B...")

# Agent A pays Agent B
agent_a.signed_transfer(
    to_wallet="0xAgentB_Wallet",
    amount=0.50,
    private_key="0xAgentA_Key",
)
print(f"A balance: ${agent_a.balance()['available_usdc']}")
print(f"B balance: ${agent_b.balance()['available_usdc']}")

CLI — for developers

The CLI lets you inspect and manage your agents from the terminal.

mono balance          # Show your agent's balance
mono health           # Check gateway status
mono config show      # Show current config

LangChain

pip install "monospay[langchain]"

from mono_sdk.langchain_tools import MonoToolkit

toolkit = MonoToolkit(api_key="mono_live_...")
tools   = toolkit.get_tools()

OpenAI Function Calling

from mono_sdk.openai_functions import get_mono_tools, handle_tool_call

tools = get_mono_tools()
# Pass tools to your OpenAI chat completion

Error handling

from mono_sdk.errors import InsufficientBalanceError, AuthenticationError

try:
    agent_a.signed_transfer(to_wallet="0x...", amount=999.00, private_key="0x...")
except InsufficientBalanceError:
    print("Out of budget — top up at monospay.com/dashboard")
except AuthenticationError:
    print("Invalid key — run: mono init")

monospay-mcp