How to integrate Addressfinder MCP with Atomic Agent

Connect Atomic Agent to Addressfinder MCP. Verify if 221b baker st is a real address, enrich contact with validated phone number, and more using natural language, with authentication handled for you.

Addressfinder logoAddressfinder
Api Key

Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time.

17 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Addressfinder.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Addressfinder account. See the Atomic Agent documentation for installation instructions.

Also integrate Addressfinder with

How Atomic Agent connects to Addressfinder

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Addressfinder to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Addressfinder. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Addressfinder account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Addressfinder MCP server, and what's possible with it?

The Addressfinder MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Addressfinder account. It provides structured and secure access so your agent can perform Addressfinder operations on your behalf.

Use Addressfinder from Atomic Agent

With your account connected, ask Atomic Agent to work with Addressfinder in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Addressfinder action and event your agent gets out of the box.

AU Address Autocomplete

Tool to perform interactive search of Australian addresses from the AddressFinder database.

Get AU Address Metadata

Tool to retrieve full metadata for an Australian address selected from the Address Autocomplete API.

AU Address Verification

Tool to verify Australian addresses against PAF/GNAF databases.

AU Location Autocomplete

Tool to perform interactive autocomplete search for Australian streets, suburbs, and states.

Get AU Location Metadata

Tool to retrieve comprehensive metadata for an Australian location (street, suburb, or state) selected from the Location Autocomplete API.

Email Verification API

Tool to verify email addresses including syntax validation, domain existence, and email account verification.

International Address Autocomplete

Tool to search for international addresses using autocomplete functionality.

Get International Address Metadata

Tool to retrieve full metadata for an international address selected from the Address Autocomplete API.

NZ Address Autocomplete

Tool to perform interactive search for New Zealand addresses.

Get NZ Address Metadata

Tool to retrieve full metadata for a NZ address including coordinates, census data, and postal details.

NZ Address Reverse Geocode

Tool to reverse geocode NZ addresses from GPS coordinates.

NZ Address Verification

Tool to verify New Zealand addresses against the Addressfinder database.

NZ Location Autocomplete

Tool to perform interactive search for New Zealand streets, suburbs, cities, and regions.

Get NZ Location Metadata

Tool to retrieve full metadata for a New Zealand location selected from the Location Autocomplete API.

NZ POI Autocomplete

Tool to perform interactive search for points of interest in New Zealand.

Get NZ POI Metadata

Tool to retrieve comprehensive metadata for New Zealand points of interest including coordinates and address details.

Phone Verification API

Tool to verify phone numbers through syntax, range checks, and network verification.

FAQ

Frequently asked questions

With a standalone Addressfinder MCP server, the agents and LLMs can only access a fixed set of Addressfinder tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Addressfinder and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Addressfinder tools.

Yes, absolutely. You can configure which Addressfinder scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Addressfinder data and credentials are handled as safely as possible.

Start with Addressfinder.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Addressfinder tool your agent needs.Free to start.

Start building