How do I find my HelloAsso API credentials?

Log in to your HelloAsso account, go to **Mon Compte > Integrations & API**. You can generate your **Client ID** and **Client Secret** from the API section there.

What is an organization 'slug'?

The slug is the unique textual identifier for your association (e.g., in `helloasso.com/associations/my-asso`, the slug is `my-asso`). You can find it by using the `list_my_organizations` tool.

Can I generate a payment link directly from the AI agent?

Yes! Use the `create_checkout_intent` action. You must provide the association slug and a JSON string with the amount (in cents) and return URL. The agent will return a redirect link for the user.

Is the integration secure for association data?

Absolutely. The integration uses industry-standard OAuth 2.0 Client Credentials over HTTPS. Your credentials are encrypted and stored securely within the Vinkius Cloud infrastructure.

HelloAsso MCP Server for LangChain 11 tools — connect in under 2 minutes

Name: HelloAsso
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 11 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect HelloAsso through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "helloasso": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using HelloAsso, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About HelloAsso MCP Server

Connect your HelloAsso account to any AI agent and take full control of your French non-profit management workflows through natural conversation.

LangChain's ecosystem of 500+ components combines seamlessly with HelloAsso through native MCP adapters. Connect 11 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

Organization Oversight — List and inspect all organizations where you have administrative rights.
Campaign Management — List all active and past forms (Donations, Memberships, Events, Shop).
Payment Monitoring — Access your financial history, track donations, and retrieve detailed payment metadata.
Order Handling — List and inspect orders to understand payer behavior and item distribution.
Checkout Intents — Generate redirect links for payments directly from the chat interface.
Member & Subscription Tracking — Manage your membership base and monitor recurring donation plans.

The HelloAsso MCP Server exposes 11 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect HelloAsso to LangChain via MCP

Follow these steps to integrate the HelloAsso MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 11 tools from HelloAsso via MCP

Why Use LangChain with the HelloAsso MCP Server

LangChain provides unique advantages when paired with HelloAsso through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine HelloAsso MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across HelloAsso queries for multi-turn workflows

HelloAsso + LangChain Use Cases

Practical scenarios where LangChain combined with the HelloAsso MCP Server delivers measurable value.

RAG with live data: combine HelloAsso tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query HelloAsso, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain HelloAsso tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every HelloAsso tool call, measure latency, and optimize your agent's performance

HelloAsso MCP Tools for LangChain (11)

These 11 tools become available when you connect HelloAsso to LangChain via MCP:

create_checkout_intent

Pass the amount in cents (EUR) and other required fields as a JSON string in "body_json". Returns a redirect URL for the payer. Generate a checkout link to receive a payment

get_member_details

Get details for a specific member ID

get_order_details

Get details for a specific order ID

get_organization_details

Get detailed information about a specific organization by its slug

get_payment_details

Get details for a specific payment ID

list_forms

Each form has a "formType" and "formSlug" used for detailed lookups. List all campaigns/forms (Donations, Memberships, Events) for an organization

list_my_organizations

Use this to find the "slug" required for other tools. List all organizations where the user has administrative rights

list_orders

An order represents one or more items purchased or donated by a user in a single session. List all orders (group of items/payments) for an organization

list_payments

Returns amounts in cents (EUR). Use this to track donations or membership payments. List all payments received by an organization

list_sold_items

g., ticket, membership tier) that were part of orders. List all individual items sold/distributed by an organization

list_subscriptions

List recurring payments (subscriptions) for an organization

Example Prompts for HelloAsso in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with HelloAsso immediately.

"List all active campaigns for my association 'Protect Oceans'."

"Show me the last 5 payments received today."

"Generate a checkout link for a 50 EUR donation."

Troubleshooting HelloAsso MCP Server with LangChain

Common issues when connecting HelloAsso to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

HelloAsso + LangChain FAQ

Common questions about integrating HelloAsso MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.