# Ideal Postcodes

```json
{
  "name": "Ideal Postcodes",
  "slug": "idealpostcodes",
  "url": "https://composio.dev/toolkits/idealpostcodes",
  "markdown_url": "https://composio.dev/toolkits/idealpostcodes.md",
  "logo_url": "https://logos.composio.dev/api/idealpostcodes",
  "categories": [
    "data & analytics"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-08-28T05:37:11.636Z"
}
```

![Ideal Postcodes logo](https://logos.composio.dev/api/idealpostcodes)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Ideal Postcodes MCP or direct API to lookup addresses, validate postcodes, cleanse address lists, and geocode locations through natural language.

## Summary

Ideal Postcodes provides UK and international address search, postcode lookup, and address cleansing APIs.
Use it to validate addresses, clean lists, and ensure accurate contact data.

## Categories

- data & analytics

## Toolkit Details

- Tools: 9

## Images

- Logo: https://logos.composio.dev/api/idealpostcodes

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for Ideal Postcodes.
  - Setup:
    - Configure Api Key credentials for Ideal Postcodes.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Lookup address for SW1A 1AA
- Cleanse and standardize 100 addresses
- Validate postcode and geocode coordinates

## 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.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK
```python
pip install composio_openai
```

```typescript
npm install @composio/openai
```

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

```typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
```

#### Path 1, Step 3: Execute Ideal Postcodes Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Ideal Postcodes actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Lookup address for SW1A 1AA and return a formatted address'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'Lookup address for SW1A 1AA and return a formatted address'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK for Python or TypeScript
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
```

#### Path 2, Step 2: Initialize Client and Create Tool Router Session

Import and initialize the Composio client, then create a Tool Router session for Ideal Postcodes
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
```

```typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent (Anthropic Claude or Mastra)
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Ideal Postcodes tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Lookup address for SW1A 1AA and return a formatted address')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: session.mcp.url,
    headers: {
      'x-api-key': 'your-composio-api-key',
    },
  },
});

const tools = await client.tools();
const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{
    role: 'user',
    content: 'Lookup address for SW1A 1AA and return a formatted address'
  }],
  maxSteps: 5,
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native Ideal Postcodes Integration

- Supports both Ideal Postcodes MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Ideal Postcodes data

### 2. Managed Auth

- Built-in OAuth handling with automatic token refresh and rotation
- Central place to manage, scope, and revoke Ideal Postcodes access
- Per user and per environment credentials instead of hard-coded keys

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Ideal Postcodes
- Scoped, least privilege access to Ideal Postcodes resources
- Full audit trail of agent actions to support review and compliance

## Use Ideal Postcodes with any AI Agent Framework

Choose a framework you want to connect Ideal Postcodes with:

- [ChatGPT Work](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)

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## Frequently Asked Questions

### Do I need my own developer credentials to use Ideal Postcodes with Composio?

Yes, Ideal Postcodes requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
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