> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.middesk.com/api-reference/business-verification/signals/list-signals/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.middesk.com/_mcp/server.

# List signals

GET https://api.middesk.com/v1/signals

Reference: https://docs.middesk.com/api-reference/business-verification/signals/list-signals

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Query parameters

- `page` (integer, optional) — Page number
- `per_page` (integer, optional) — Items per page
- `q` (string, optional) — Search query
- `external_id` (string, optional) — Filter by external ID
- `start_date` (string, optional) — Start date filter (YYYY-MM-DD)
- `end_date` (string, optional) — End date filter (YYYY-MM-DD)
- `starting_at` (string, optional) — Start timestamp filter
- `ending_at` (string, optional) — End timestamp filter
- `batch_id` (string, optional) — Filter by batch ID
- `model_slug` (string, optional) — Filter by model slug
- `reason_codes` (string, optional) — Filter by reason codes

## Response

### 200

signals list

- `object` (string, required)
- `has_more` (boolean, required)
- `data` (list of Signal, optional)
- `total_count` (integer, optional)

## Types

### Signal

- `object` (string, required)
- `id` (string, required)
- `name` (string, required)
- `created_at` (datetime, required)
- `tin` (string, optional, nullable)
- `external_id` (string, optional, nullable)
- `model_slug` (string, optional)
- `score` (double, optional, nullable)
- `business_id` (string, optional, nullable)
- `batch_id` (string, optional, nullable)
- `requester` (SignalRequester, optional)
- `reasons` (list of SignalReasonsItem, optional)
- `addresses` (list of string, optional)
- `people` (list of string, optional)

### SignalRequester

- `id` (string, required)
- `type` (string, required)
- `name` (string, required)

### SignalReasonsItem

- `category` (enum, required)
  - Allowed values: `identification`, `verification`, `evaluation`
- `group` (string, required)
- `description` (string, required)
- `code` (enum, required)
  - Allowed values: `I301`, `I302`, `I304`, `I102`, `I103`, `I107`, `I108`, `I109`, `I111`, `I601`, `I603`, `I201`, `I202`, `I203`, `I204`, `V010`, `V011`, `V101`, `V102`, `V103`, `V104`, `V501`, `V502`, `V503`, `V505`, `V748`, `V749`, `V750`, `V751`, `V752`, `V753`, `V801`, `V1101`, `V1201`, `V1302`, `E500`, `E501`, `E502`, `E503`, `E1101`, `E1102`, `E1201`
- `importance` (double, optional)

## Examples

**Response**

```json
{
  "object": "list",
  "has_more": true,
  "data": [
    {
      "object": "signal",
      "id": "f6a7b8c9-d0e1-2345-f012-3456789abcde",
      "name": "Acme Corporation",
      "created_at": "2025-01-07T12:00:00Z",
      "tin": "12-3456789",
      "external_id": "ext-12345",
      "model_slug": "verify",
      "score": 0.85,
      "batch_id": "a7b8c9d0-e1f2-3456-0123-456789abcdef",
      "requester": {
        "id": "b8c9d0e1-f2a3-4567-1234-56789abcdef0",
        "type": "Account",
        "name": "Example Account"
      },
      "reasons": [
        {
          "category": "identification",
          "group": "name",
          "description": "Business name verified",
          "code": "V101"
        }
      ],
      "addresses": [
        "123 Main Street, San Francisco, CA 94105"
      ],
      "people": [
        "people"
      ]
    }
  ],
  "total_count": 1
}
```

**SDK Code**

```python Signals list
import requests

url = "https://api.middesk.com/v1/signals"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript Signals list
const url = 'https://api.middesk.com/v1/signals';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go Signals list
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.middesk.com/v1/signals"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby Signals list
require 'uri'
require 'net/http'

url = URI("https://api.middesk.com/v1/signals")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
```

```java Signals list
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.middesk.com/v1/signals")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php Signals list
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.middesk.com/v1/signals', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp Signals list
using RestSharp;

var client = new RestClient("https://api.middesk.com/v1/signals");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift Signals list
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.middesk.com/v1/signals")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```