> For the complete documentation index, see [llms.txt](https://infronai.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://infronai.gitbook.io/docs/observability/request-tracking.md).

# Request Tracking

Request Tracking lets you add optional identifiers to each API request, making it easier to find, filter, and analyze requests by user, session, application, or tag in Logs, Usage & Activity, and the Analytics API.

## Tracking fields

Add any of these optional fields at the top level of a request body: `user_id`, `session_id`, `app_id`, and `tag`. Each value must be a string of no more than 64 characters. The fields can be used independently.

## Supported APIs

Request Tracking is available across:

* Text generation, including OpenAI Chat Completions, Anthropic Messages, and OpenResponses
* Image, audio, and video generation
* Embeddings and rerank
* Search APIs

## Example

{% code collapsedlinecount="10" %}

```bash
curl https://llm.onerouter.pro/v1/chat/completions \
  -H "Authorization: Bearer <API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-5.5",
    "messages": [
      {
        "role": "user",
        "content": "Summarize this support ticket."
      }
    ],
    "user_id": "customer_123",
    "session_id": "ticket_456",
    "app_id": "support-copilot",
    "tag": "ticket-summary"
  }'
```

{% endcode %}

## Find and analyze requests

* In [**Logs**](https://infron.ai/dashboard/logs), filter requests by User ID, Session ID, App ID, or Tag. These fields also appear in the request table and Log Details.

<figure><img src="https://3822312837-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZ9C9AjT7j46HAcQrOVWw%2Fuploads%2FIVAfeUn5FIHpfST5Kf22%2Fimage.png?alt=media&amp;token=f8fb215b-e33c-4db5-a580-142d7e9f4397" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3822312837-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZ9C9AjT7j46HAcQrOVWw%2Fuploads%2FviQlEZywWvldlfpXaNbo%2Fimage.png?alt=media&amp;token=2ab35e03-ffdc-47b3-8fc1-55ae013ccdf6" alt=""><figcaption></figcaption></figure>

* In [**Usage & Activity**](https://infron.ai/dashboard/activity), use the same fields to filter usage statistics.

<figure><img src="https://3822312837-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZ9C9AjT7j46HAcQrOVWw%2Fuploads%2FLo5wFa4SegVUmUHu2pLw%2Fimage.png?alt=media&amp;token=747017df-3e47-448b-b717-a5f087150685" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3822312837-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZ9C9AjT7j46HAcQrOVWw%2Fuploads%2FtJp9zRdbTVkbKwLX12FM%2Fimage.png?alt=media&amp;token=a541dbd6-51bd-43ea-8fb4-4396fc46e93f" alt=""><figcaption></figcaption></figure>

* In the [**Analytics API**](https://infron.ai/docs/billing-apis/analytics-api/query-analytics-data), use these fields as dimensions or filters.


---

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