---
title: "Data Collected"
description: "See what data is collected by the Sentry JavaScript SDK."
url: https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected/
---

# Data Collected for Deno

Sentry takes data privacy very seriously and has default settings in place that prioritize data safety, especially when it comes to personally identifiable information (PII) data. When you add the Sentry SDK to your application, you allow it to collect data and send it to Sentry during the runtime and build time of your application.

The category types and amount of data collected vary, depending on the integrations you've enabled in the Sentry SDK. This page lists data categories that the Sentry JavaScript SDK collects.

Options to control data collection

You can control many of the categories listed here with the [`dataCollection` option](https://docs.sentry.io/platforms/javascript/guides/deno/configuration/options.md#dataCollection), which lets you opt in or out of each data category individually.

By default, the SDK collects all `dataCollection` categories and scrubs values whose keys match the built-in sensitive denylist. To collect less, opt out of a category or restrict it.

Regardless of these options, you can always scrub any data before it's sent to Sentry. See [Scrubbing Sensitive Data](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/sensitive-data.md) for details.

## [HTTP Headers](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#http-headers)

By default, the SDK sends HTTP request and response headers. It always keeps the header names and replaces the values of sensitive headers (names that match terms such as `auth`, `token`, or `password`) with `[Filtered]`.

Which headers are sent depends on the environment:

* In the browser, the SDK sends the request headers it gathers itself (`Referer` and `User-Agent`). The `httpClient` integration, which is not enabled by default, adds the request and response headers of failed requests.
* On the server, the headers of incoming requests are attached to error events and server spans. On some runtimes (such as Bun and Deno), the response headers of incoming requests are attached to server spans as well.
* The headers of outgoing requests are not collected by default.

Use the `dataCollection.httpHeaders` option to control header collection. Set `dataCollection: { httpHeaders: false }` to disable it, or use `{ allow: [...] }` or `{ deny: [...] }` to restrict which header values are sent. To control each direction separately, use the `{ request: ..., response: ... }` form, for example `{ request: true, response: false }`.

## [Cookies](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#cookies)

By default, cookie collection is enabled. On the server, the cookies of incoming requests are sent with error events and server spans. In the browser, the SDK doesn't send cookies unless you [enable the `httpClient` integration](https://docs.sentry.io/platforms/javascript/guides/deno/configuration/integrations/httpclient.md), which captures the cookies of failed requests. The SDK replaces the values of sensitive cookies (like `token` or `key`) with `[Filtered]`.

To disable cookie collection, set `dataCollection: { cookies: false }`. You can also restrict which cookie values are sent using `{ allow: [...] }` or `{ deny: [...] }`.

## [Information About Logged-in User](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#information-about-logged-in-user)

The Sentry SDK doesn't fill the user identity fields `user.id`, `user.email`, and `user.username` automatically. Data that you set with [`Sentry.setUser()`](https://docs.sentry.io/platforms/javascript/guides/deno/apis.md#setUser) is always sent to Sentry. Some integrations (e.g. [User Feedback](https://docs.sentry.io/platforms/javascript/guides/deno/user-feedback.md)) may also send data like the user ID, username, and email address when explicitly configured.

The `dataCollection.userInfo` option controls the identity data the SDK infers on its own, such as the user's IP address (see the next section). It doesn't affect data set with `Sentry.setUser()`.

## [Users' IP Address and Location](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#users-ip-address-and-location)

By default, the SDK sends the user's IP address. To disable it, set [`dataCollection: { userInfo: false }`](https://docs.sentry.io/platforms/javascript/guides/deno/configuration/options.md#dataCollection).

In some integrations such as [`handleRequest`](https://docs.sentry.io/platforms/javascript/guides/astro.md#customize-server-instrumentation) in Astro, the `trackClientIp` option also controls this. It defaults to the `dataCollection.userInfo` setting.

If sending the IP address is enabled we will try to infer the IP address or use the IP address provided by `ip_address` in [`Sentry.setUser()`](https://docs.sentry.io/platforms/javascript/guides/deno/apis.md#setUser). If you set `ip_address: null`, the IP address won't be inferred.

Even when this is disabled, IP addresses can still reach Sentry through collected HTTP headers, cookies, or query parameters (for example, the `X-Forwarded-For` header). Add these terms to the partially-matched deny lists for those categories so their values are filtered:

```JavaScript
Sentry.init({
  dsn: "https://<key>@o<orgId>.ingest.sentry.io/<projectId>",
  dataCollection: {
    httpHeaders: { deny: ["forwarded", "-ip", "remote-", "via", "-user"] },
    cookies: { deny: ["forwarded", "-ip", "remote-", "via", "-user"] },
    urlQueryParams: { deny: ["forwarded", "-ip", "remote-", "via", "-user"] },
  },
});
```

## [Request URL](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#request-url)

The request URL of outgoing and incoming HTTP requests is **always sent to Sentry**: the scheme, host, and path can't be turned off. Depending on your application, the path could contain PII data. For example, a URL like `/users/1234/details`, where `1234` is a user id (which may be considered PII).

The query string that's part of the URL is controlled by the `dataCollection.urlQueryParams` setting described in the next section.

## [Request Query String](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#request-query-string)

By default, the full request query string of outgoing and incoming HTTP requests is sent to Sentry. Depending on your application, this could contain PII data. For example, a query string like `?user_id=1234`, where `1234` is a user id (which may be considered PII).

Use the `dataCollection.urlQueryParams` option to control this. Set it to `false` to disable collection entirely, or use `{ allow: [...] }` / `{ deny: [...] }` to filter which values are sent. Values whose keys match the built-in sensitive denylist (terms like `auth`, `token`, `password`, and `secret`) are scrubbed automatically. The same rules apply to the query string inside the request URL: values are filtered in place, and `false` removes the query string from the URL entirely.

Sentry also has some additional [server-side data scrubbing](https://docs.sentry.io/security-legal-pii/scrubbing/server-side-scrubbing.md) in place to remove sensitive data from the query string.

## [Request Body](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#request-body)

By default, the SDK collects the bodies of incoming requests on the server side. This also covers data taken from the body, like tRPC input and Remix action form data.

Use the `dataCollection.httpBodies` option to control this. It takes a list of body types to collect: `"incomingRequest"`, `"outgoingRequest"`, `"incomingResponse"`, and `"outgoingResponse"`. All types are included by default, but the SDK currently only captures `"incomingRequest"` bodies and, for Next.js server actions, `"outgoingResponse"` bodies. Set the option to `[]` to disable body collection:

```js
Sentry.init({
  dsn: "https://<key>@o<orgId>.ingest.sentry.io/<projectId>",
  dataCollection: {
    httpBodies: [],
  },
});
```

The body size, taken from the `content-length` header, is always sent, even when body collection is disabled.

## [Server-Side Request Data](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#server-side-request-data)

On the server-side, the [RequestData Integration](https://docs.sentry.io/platforms/javascript/guides/deno/configuration/integrations/requestdata.md) captures incoming request data including cookies, headers, query strings, request body (`data`), URL, and user information. The IP address is included when `dataCollection.userInfo` is enabled.

## [Response Body](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#response-body)

By default, the SDK doesn't capture response bodies, with one exception: the results of Next.js server actions are collected when `dataCollection.httpBodies` includes `"outgoingResponse"`, which is the default. To disable this, set `dataCollection: { httpBodies: [] }` or provide a subset that excludes `"outgoingResponse"`.

The SDK may still send the response body size, taken from the `content-length` header.

## [Source Context](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#source-context)

By default, SDKs set up by the Sentry CLI Wizard (`@sentry/wizard`) will enable uploading source maps to Sentry.

To disable source map upload, see [the Source Maps documentation](https://docs.sentry.io/platforms/javascript/guides/deno/sourcemaps.md).

## [Local Variables In Stack Trace](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#local-variables-in-stack-trace)

The Sentry SDK does not send local variables in the error stack trace in client-side JavaScript SDKs.

## [Device, Browser, OS and Runtime Information](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#device-browser-os-and-runtime-information)

By default, the Sentry SDK sends information about the device and runtime to Sentry.

In browser environments, this information is obtained by the User Agent string. The User Agent string contains information about the browser, operating system, and device type.

In server-side environments, the Sentry SDK uses the `os` module to get information about the operating system and architecture.

## [Stack Trace Context Lines](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#stack-trace-context-lines)

By default, the [Context Lines Integration](https://docs.sentry.io/platforms/javascript/guides/deno/configuration/integrations/contextlines.md) is enabled. This integration sends the surrounding lines of code for each frame in the stack trace. This can include PII data if the code contains PII information.

## [tRPC Context](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#trpc-context)

By default, tRPC input is collected because `httpBodies` includes `"incomingRequest"` by default. To disable it, set `dataCollection: { httpBodies: [] }` or use a list that excludes `"incomingRequest"`.

If you exclude `"incomingRequest"`, tRPC input is not collected. You can still opt in per-middleware by setting `attachRpcInput: true` in the [`Sentry.trpcMiddleware()`](https://docs.sentry.io/platforms/javascript/guides/deno/configuration/integrations/trpc.md) options, regardless of the global `dataCollection` setting.

## [GraphQL Operations](https://docs.sentry.io/platforms/javascript/guides/deno/data-management/data-collected.md#graphql-operations)

When you use a GraphQL integration, the Sentry SDK sends the operation name and the operation type to Sentry.

By default, the SDK also sends the GraphQL document (the query or mutation source text). Literal values inside the document are redacted, and the values of GraphQL variables are not collected. Use the `dataCollection.graphQL` option to turn off the document:

```JavaScript
Sentry.init({
  dsn: "https://<key>@o<orgId>.ingest.sentry.io/<projectId>",
  dataCollection: {
    graphQL: {
      document: false,
    },
  },
});
```