> This page is for version v2 (default).
> For other versions, use one of these documentation indexes:
> - v2 (default): https://docs.paid.ai/v-2/llms.txt
> - v1: https://docs.paid.ai/v-1/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.paid.ai/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.paid.ai/_mcp/server.

# Discover metadata keys present in your signals

GET https://api.agentpaid.io/api/v2/analytics/signals/metadata

Lists the JSON paths (and their observed types) present in the `data` payload of your signals within a time window (default: last 30 days), grouped by signal name. Use the returned paths in queries against `fact_signal`, e.g. `WHERE data.<path>::String = '...'`.

Reference: https://docs.paid.ai/api-reference/api-reference/analytics/get-signals-metadata

## Authentication

- `Authorization` header (bearer token, required) — API Key authentication using Bearer token

## Request

### Query parameters

- `signalName` (string, optional) — Restrict discovery to a single signal name.
- `fromDate` (datetime, optional) — Start of the discovery window. Defaults to 30 days ago.
- `toDate` (datetime, optional) — End of the discovery window. Defaults to now.

## Response

### 200

200

- `signals` (list of SignalsMetadataResponseSignalsItems, required)
- `meta` (SignalsMetadataResponseMeta, required)

## Errors

### 400 Bad Request Error

400

- `error` (string, required)
- `code` (string, optional)
- `details` (string, optional)

### 500 Internal Server Error

500

- `error` (string, required)
- `code` (string, optional)
- `details` (string, optional)

## Types

### SignalsMetadataResponseSignalsItems

- `signalName` (string, required)
- `paths` (list of SignalsMetadataResponseSignalsItemsPathsItems, required)

### SignalsMetadataResponseMeta

- `fromDate` (string, required)
- `toDate` (string, required)

### SignalsMetadataResponseSignalsItemsPathsItems

- `path` (string, required) — JSON path inside the signal `data` payload, usable in queries as e.g. `data.<path>::String`.
- `types` (list of string, required) — ClickHouse dynamic types observed for this path.

## Examples

**Response**

```json
{
  "signals": [
    {
      "signalName": "string",
      "paths": [
        {
          "path": "string",
          "types": [
            "string"
          ]
        }
      ]
    }
  ],
  "meta": {
    "fromDate": "string",
    "toDate": "string"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.agentpaid.io/api/v2/analytics/signals/metadata"

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

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

print(response.json())
```

```javascript
const url = 'https://api.agentpaid.io/api/v2/analytics/signals/metadata';
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
package main

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

func main() {

	url := "https://api.agentpaid.io/api/v2/analytics/signals/metadata"

	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
require 'uri'
require 'net/http'

url = URI("https://api.agentpaid.io/api/v2/analytics/signals/metadata")

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
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.agentpaid.io/api/v2/analytics/signals/metadata")
  .header("Authorization", "Bearer <token>")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.agentpaid.io/api/v2/analytics/signals/metadata', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.agentpaid.io/api/v2/analytics/signals/metadata");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.agentpaid.io/api/v2/analytics/signals/metadata")! 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()
```