langchain-agent-tools

LangChain-compatible tools for AI agents — weather, crypto, security, memory and more. Works with any LangChain agent out of the box.

All tools use free public APIs — no API keys required.

Installation

pip install langchain-agent-tools

Quick Start

from langchain_agent_tools import get_current_weather, check_pii, store_memory, get_token_price

# Use with any LangChain agent
from langchain.agents import create_tool_calling_agent, AgentExecutor
from langchain_openai import ChatOpenAI

llm = ChatOpenAI(model="gpt-4o-mini")
tools = [get_current_weather, check_pii, store_memory, get_token_price]
agent = create_tool_calling_agent(llm, tools, prompt)
executor = AgentExecutor(agent=agent, tools=tools)

Available Tools

Weather (Open-Meteo, no API key)

• get_current_weather(location) — Current temperature, humidity, wind, conditions
• get_weather_forecast(location, days) — Forecast for up to 16 days

Crypto (CoinGecko, no API key)

• get_token_price(token) — Current price, 24h change, market cap
• get_token_info(token) — Detailed info, ATH/ATL, supply, links
• get_trending_tokens() — Currently trending cryptocurrencies

Security

• check_pii(text) — Detect emails, phones, credit cards, SSNs, IBANs in text
• check_url_safety(url) — Analyze URL for phishing/malware indicators

Memory (Persistent)

• store_memory(key, value) — Save key-value pairs across sessions
• retrieve_memory(key) — Look up stored values
• list_memories() — Show all stored memories
• delete_memory(key) — Remove a stored key

Usage Examples

Standalone (without agent)

from langchain_agent_tools import get_current_weather, check_pii

# Weather
result = get_current_weather.invoke({"location": "Berlin"})
print(result)

# PII Check
result = check_pii.invoke({"text": "Contact me at john@example.com or 555-123-4567"})
print(result)

With LangGraph

from langgraph.prebuilt import create_react_agent
from langchain_agent_tools import get_current_weather, get_token_price, check_pii

tools = [get_current_weather, get_token_price, check_pii]
agent = create_react_agent(llm, tools)

Requirements

• Python >= 3.10
• langchain-core >= 0.2.0
• httpx >= 0.27.0

License

MIT