langchain-agentline

LangChain integration for AgentLine — give your AI agents real phone numbers to make calls, read SMS, set up webhooks, and provision numbers.

Installation

pip install langchain-agentline

Quick Start

import os
from langchain_agentline import AgentLineToolkit

toolkit = AgentLineToolkit(api_key=os.environ["AGENTLINE_API_KEY"])
tools = toolkit.get_tools()

# Use with any LangChain agent
from langgraph.prebuilt import create_react_agent
from langchain_openai import ChatOpenAI

agent = create_react_agent(ChatOpenAI(), tools)
result = agent.invoke({
    "messages": [{"role": "user", "content": "Provision a phone number and call +15551234567"}]
})

Available Tools (12 tools across 5 categories)

Category	Tool	Description
Calls	agentline_make_call	Make outbound voice calls ($0.10/min)
	agentline_get_calls	List/filter calls by status
	agentline_get_transcript	Fetch call transcripts
	agentline_hangup_call	Hang up active calls
SMS	agentline_get_messages	Read inbound SMS messages
Numbers	agentline_provision_number	Buy a phone number ($2 one-time)
	agentline_get_numbers	List all phone numbers
Webhooks	agentline_set_webhook	Real-time event webhooks
	agentline_list_webhooks	List configured webhooks
	agentline_delete_webhook	Remove a webhook
Billing	agentline_get_balance	Check account balance
Agents	agentline_list_agents	List agents and their numbers

Setup

1. Sign up at agentline.cloud
2. Create an agent and copy your API key
3. Set your API key: export AGENTLINE_API_KEY=sk_live_...

Requirements

• Python >= 3.10
• An AgentLine account with an active agent