# How to integrate Ideal Postcodes MCP with Atomic Agent

```json
{
  "title": "How to integrate Ideal Postcodes MCP with Atomic Agent",
  "toolkit": "Ideal Postcodes",
  "toolkit_slug": "idealpostcodes",
  "framework": "Atomic Agent",
  "framework_slug": "atomic-agent",
  "url": "https://composio.dev/toolkits/idealpostcodes/framework/atomic-agent",
  "markdown_url": "https://composio.dev/toolkits/idealpostcodes/framework/atomic-agent.md",
  "updated_at": "2026-08-28T05:37:11.636Z"
}
```

## 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 Ideal Postcodes.
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 Ideal Postcodes account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions.

## Also integrate Ideal Postcodes with

- [ChatGPT](https://composio.dev/toolkits/idealpostcodes/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/idealpostcodes/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/idealpostcodes/framework/hermes-agent)

## TL;DR

### How Atomic Agent connects to Ideal Postcodes
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 Ideal Postcodes to Atomic Agent

### Connect Ideal Postcodes to Atomic Agent
- Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key.
- 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.
- Ask Atomic Agent to do something in Ideal Postcodes. It searches Composio for the right tool.
- On first use, open the sign-in link returned in the chat. Connect your Ideal Postcodes 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 Ideal Postcodes MCP server, and what's possible with it?

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

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `IDEALPOSTCODES_FIND_ADDRESS_SUGGESTIONS` | Find Address Suggestions | Return ranked address suggestions for a partial address without resolving them; resolving a selected suggestion is a separate paid lookup. |
| `IDEALPOSTCODES_FIND_PLACE_SUGGESTIONS` | Find Place Suggestions | Return ranked country, city, and administrative-area suggestions without resolving them; resolving a selected place is a separate paid lookup. |
| `IDEALPOSTCODES_GET_ADDRESS_BY_IDENTIFIER` | Get Address by Identifier | Retrieve a UK address by UDPRN or UMPRN. This consumes a paid lookup, and UMPRN requires the optional Multiple Residence dataset. |
| `IDEALPOSTCODES_LOOKUP_POSTCODE` | Lookup Postcode | Return addresses at a UK postcode, or an Irish Eircode when enabled; successful results consume paid lookups. |
| `IDEALPOSTCODES_RESOLVE_ADDRESS_SUGGESTION` | Resolve Address Suggestion | Resolve an address suggestion ID to a complete GBR or USA address. This consumes a paid lookup, and USA resolution requires an enabled USA dataset. |
| `IDEALPOSTCODES_RESOLVE_PLACE` | Resolve Place | Resolve a place suggestion ID to full geography and coordinates. This consumes a paid lookup. |
| `IDEALPOSTCODES_SEARCH_ADDRESSES` | Search Addresses | Search complete UK address records by text, filters, or coordinates; successful results consume paid lookups. |
| `IDEALPOSTCODES_VALIDATE_ADDRESS` | Validate Address | Match and standardize a GBR or USA address with confidence details. This consumes a paid lookup, and USA verification requires the optional USPS CASS dataset. |
| `IDEALPOSTCODES_VALIDATE_CONTACT` | Validate Contact | Validate an email address or international phone number using an optional paid dataset enabled on the connected Ideal Postcodes API key. |

## Supported Triggers

None listed.

## 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](/pricing) for the current limits that apply to your connection.

## Complete Code

None listed.

## Conclusion

### Use Ideal Postcodes from Atomic Agent
With your account connected, ask Atomic Agent to work with Ideal Postcodes in natural language. You can connect more apps through the same Composio integration as you need them.
Visit the [Atomic Agent website](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo).

## How to build Ideal Postcodes MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/idealpostcodes/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/idealpostcodes/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/idealpostcodes/framework/hermes-agent)

## Related Toolkits

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- [Api sports](https://composio.dev/toolkits/api_sports) - Api sports is a comprehensive sports data platform covering 2,000+ competitions with live scores and 15+ years of stats. Instantly access up-to-date sports information for analysis, apps, or chatbots.
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- [Bigpicture io](https://composio.dev/toolkits/bigpicture_io) - BigPicture.io offers APIs for accessing detailed company and profile data. Instantly enrich your applications with up-to-date insights on 20M+ businesses.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Ideal Postcodes MCP?

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

### Can I use Tool Router MCP with Atomic Agent?

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 Ideal Postcodes tools.

### Can I manage the permissions and scopes for Ideal Postcodes while using Tool Router?

Yes, absolutely. You can configure which Ideal Postcodes 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.

### How safe is my data with Composio Tool Router?

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 Ideal Postcodes data and credentials are handled as safely as possible.

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