# 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": "2026-10-04T15:36:07.534Z"
}
```

![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, the OpenAI provider, and the OpenAI SDK
```python
pip install composio composio_openai openai
```

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

#### Path 1, Step 2: Create a Composio session

Initialize Composio with the OpenAI Responses provider and create a session scoped to Ideal Postcodes
```python
import json
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
client = OpenAI()

session = composio.create(user_id="your-user-id", toolkits=["idealpostcodes"])
tools = session.tools()
```

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

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["idealpostcodes"] });
const tools = await session.tools();
```

#### Path 1, Step 3: Run Ideal Postcodes tools with your agent

Send a request, execute the Ideal Postcodes tool calls through the session, and print the final answer
```python
response = client.responses.create(
    model="gpt-5.6-sol",
    tools=tools,
    input=[{"role": "user", "content": "Lookup address for SW1A 1AA and return a formatted address"}],
)

while True:
    tool_calls = [o for o in response.output if o.type == "function_call"]
    if not tool_calls:
        break
    results = composio.provider.handle_tool_calls(response=response, session=session)
    response = client.responses.create(
        model="gpt-5.6-sol",
        tools=tools,
        previous_response_id=response.id,
        input=[
            {"type": "function_call_output", "call_id": call.call_id, "output": json.dumps(results[i])}
            for i, call in enumerate(tool_calls)
        ],
    )

print(response.output_text)
```

```typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Lookup address for SW1A 1AA and return a formatted address" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
```

### Path 2: MCP Server Setup

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

Install the Composio SDK and your agent framework
```python
pip install composio claude-agent-sdk
```

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

#### Path 2, Step 2: Create a session with MCP enabled

Create a session scoped to Ideal Postcodes and read its MCP URL and headers
```python
from composio import Composio

composio = Composio()
session = composio.create(user_id="your-user-id", toolkits=["idealpostcodes"], mcp=True)
```

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

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["idealpostcodes"],
  mcp: true,
});
```

#### Path 2, Step 3: Connect your agent to the MCP server

Pass the session's MCP URL and headers to your agent and run a Ideal Postcodes request
```python
import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions, AssistantMessage, TextBlock

options = ClaudeAgentOptions(
    mcp_servers={
        "composio": {
            "type": "http",
            "url": session.mcp.url,
            "headers": session.mcp.headers,
        }
    },
    system_prompt="You are a helpful assistant with access to Ideal Postcodes tools.",
    tools=[],
    allowed_tools=["mcp__composio__*"],
)

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 isinstance(message, AssistantMessage):
                for block in message.content:
                    if isinstance(block, TextBlock):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Lookup address for SW1A 1AA and return a formatted address",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
```

## 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](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)
- [Atomic Agent](https://composio.dev/toolkits/idealpostcodes/framework/atomic-agent)

## Related Toolkits

- [Excel](https://composio.dev/toolkits/excel) - Microsoft Excel is a robust spreadsheet application for organizing, analyzing, and visualizing data. It's the go-to tool for calculations, reporting, and flexible data management.
- [21risk](https://composio.dev/toolkits/_21risk) - 21RISK is a web app built for easy checklist, audit, and compliance management. It streamlines risk processes so teams can focus on what matters.
- [Abstract](https://composio.dev/toolkits/abstract) - Abstract provides a suite of APIs for automating data validation and enrichment tasks. It helps developers streamline workflows and ensure data quality with minimal effort.
- [AccuWeather](https://composio.dev/toolkits/accu_weather) - AccuWeather is a global weather service providing current conditions, forecasts, MinuteCast precipitation, alerts, and lightning data. Use it for fast, localized forecasts and real-time weather alerts.
- [Adafruit IO](https://composio.dev/toolkits/adafruit_io) - Adafruit IO is Adafruit's cloud platform for connected device and IoT project data. It helps you store, visualize, and act on sensor feeds without running your own backend.
- [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time.
- [Agentql](https://composio.dev/toolkits/agentql) - Agentql is a toolkit that connects AI agents to the web using a specialized query language. It enables structured web interaction and data extraction for smarter automations.
- [Agenty](https://composio.dev/toolkits/agenty) - Agenty is a web scraping and automation platform for extracting data and automating browser tasks—no coding needed. It streamlines data collection, monitoring, and repetitive online actions.
- [Ambee](https://composio.dev/toolkits/ambee) - Ambee is an environmental data platform providing real-time, hyperlocal APIs for air quality, weather, and pollen. Get precise environmental insights to power smarter decisions in your apps and workflows.
- [Ambient weather](https://composio.dev/toolkits/ambient_weather) - Ambient Weather is a platform for personal weather stations with a robust API for accessing local, real-time, and historical weather data. Get detailed environmental insights directly from your own sensors for smarter apps and automations.
- [Anonyflow](https://composio.dev/toolkits/anonyflow) - Anonyflow is a service for encryption-based data anonymization and secure data sharing. It helps organizations meet GDPR, CCPA, and HIPAA data privacy compliance requirements.
- [ApexVerify](https://composio.dev/toolkits/apexverify) - ApexVerify is a contact-data validation service for emails and phone numbers. Use it to normalize, verify, and clean leads before they enter your systems.
- [Api ninjas](https://composio.dev/toolkits/api_ninjas) - Api ninjas offers 120+ public APIs spanning categories like weather, finance, sports, and more. Developers use it to supercharge apps with real-time data and actionable endpoints.
- [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.
- [Apify](https://composio.dev/toolkits/apify) - Apify is a cloud platform for building, deploying, and managing web scraping and automation tools called Actors. It lets you automate data extraction and workflow tasks at scale—no infrastructure headaches.
- [Autom](https://composio.dev/toolkits/autom) - Autom is a lightning-fast search engine results data platform for Google, Bing, and Brave. Developers use it to access fresh, low-latency SERP data on demand.
- [Beach Day API](https://composio.dev/toolkits/beach_day_api) - Beach Day API is a beach intelligence service for search, conditions, scores, rules, amenities, tides, and country coverage. Use it to power trip planning, surf reports, safety checks, and location-aware beach discovery.
- [Beaconchain](https://composio.dev/toolkits/beaconchain) - Beaconchain is a real-time analytics platform for Ethereum 2.0's Beacon Chain. It provides detailed insights into validators, blocks, and overall network performance.
- [Big data cloud](https://composio.dev/toolkits/big_data_cloud) - BigDataCloud provides APIs for geolocation, reverse geocoding, and address validation. Instantly access reliable location intelligence to enhance your applications and workflows.
- [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

### 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.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)