# Send Your First Request

Welcome to Forager.ai! This guide will walk you through sending your first API request to our **[Phone Number Lookup API](/openapi)** using `curl`.

## Prerequisites

Before making a request, ensure you have:

- **An API Key**: Sign up for a free account at [app.forager.ai](https://app.forager.ai) and obtain your API key.
- **A Terminal or Command Line Interface (CLI)**: You’ll need this to execute `curl` commands.


## Example: Phone Number Lookup API Request

To look up details for a phone number, send a `POST` request to the **Phone Number Lookup API** endpoint.

### Request Format


```bash
curl -X POST "https://api-v2.forager.ai/api/{account_id}/datastorage/person_contacts_lookup/phone_numbers/" \
     -H "Content-Type: application/json" \
     -H "X-API-KEY: YOUR_API_KEY" \
     -d '{
           "linkedin_public_identifier": "billgates"
         }'
```

You can also look up by using a person Forager ID, see example below:


```bash
curl -X POST "https://api-v2.forager.ai/api/{account_id}/datastorage/person_contacts_lookup/phone_numbers/" \
     -H "Content-Type: application/json" \
     -H "X-API-KEY: YOUR_API_KEY" \
     -d '{
           "person_id": 123
         }'
```

See examples of how to find a person id in the **[recipes doc](/api-overview/recipes)**.

### Understanding the Request

- Replace {account_id} with your Forager.ai account ID.
- Replace YOUR_API_KEY with your actual API key.
- Modify the `linkedin_public_identifier` field with the number you wish to look up.


## Error Handling

If authentication fails, you will receive one of the following responses:

| Status Code | Message | Description |
|  --- | --- | --- |
| `401` | `Unauthorized` | API key is missing or incorrect. |
| `403` | `Forbidden` | API key does not have permission to access the resource. |