agentpay-langchain

LangChain tool for autonomous USDC payments via AgentPay.

Install

pip install agentpay-langchain

Usage

from agentpay_langchain import AgentPayTool
from langchain_openai import ChatOpenAI
from langchain.agents import create_tool_calling_agent, AgentExecutor
from langchain_core.prompts import ChatPromptTemplate

# Get your free API key at https://agentpay.xyz/get-started
tool = AgentPayTool(api_key="ap_...", agent_id="my-agent")

llm = ChatOpenAI(model="gpt-4o")
prompt = ChatPromptTemplate.from_messages([
    ("system", "You are an AI agent that can make USDC payments on behalf of users."),
    ("human", "{input}"),
    ("placeholder", "{agent_scratchpad}"),
])

agent = create_tool_calling_agent(llm, [tool], prompt)
executor = AgentExecutor(agent=agent, tools=[tool], verbose=True)

result = executor.invoke({"input": "Pay 10 USDC to 0xABC... for API access"})

Features

• Guardrails enforced on every payment (spend limits, velocity caps)
• Full audit trail with on-chain tx hashes (BaseScan)
• Idempotency keys to prevent duplicate payments
• Async support via _arun
• Works with any LangChain-compatible LLM

Get started

1. Get a free API key at agentpay.xyz/get-started
2. Set AGENTPAY_API_KEY=ap_... or pass api_key= directly
3. Configure guardrails via dashboard or API