langchain-quantumscan

QuantumScan tools for LangChain, LangGraph, CrewAI, and AutoGen — pre-transaction safety checks (honeypot/drainer detection, contract risk scoring) and post-quantum cryptography vulnerability scanning, ready to drop into an agent's toolset.

No server to run — every tool calls the hosted QuantumScan MCP endpoint (https://quantumscan.io/api/mcp) directly. Free tier: 10 scans/day per IP, no signup.

Install

pip install langchain-quantumscan

LangChain / LangGraph

from langchain_quantumscan import get_quantumscan_tools
from langgraph.prebuilt import create_react_agent

tools = get_quantumscan_tools()
agent = create_react_agent(llm, tools)

Individual tools: QuantumScanTool (scan a repo), GetScanResultTool (poll for results), CheckPqcRiskTool (instant algorithm check, no scan), ScanContractTool (verify a contract is safe before signing a transaction with it).

CrewAI

from crewai import Agent
from langchain_quantumscan import QuantumScanCrewTool

auditor = Agent(
    role="Security Auditor",
    goal="Verify contracts and repos are safe before the crew interacts with them",
    tools=[QuantumScanCrewTool()],
)

AutoGen

from langchain_quantumscan import quantumscan_scan_contract, AUTOGEN_TOOLS

Why this exists

Autonomous agents that sign transactions or install dependencies are the highest-value target for honeypots, drainers, and rug pulls — and by construction they can't "notice" a scam the way a human would. ScanContractTool / quantumscan_scan_contract gives an agent a way to check before signing, not just discover the loss after.

Optional: higher rate limits

export QUANTUMSCAN_API_KEY=qs_...   # get one free at quantumscan.io

License

MIT