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33> What Claude Desktop on 3P sends to Anthropic, how to disable it, and the network paths your firewall needs to allow
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5When Claude Desktop on third-party (3P) is configured with Google Cloud's Agent Platform, Amazon Bedrock, or Microsoft Foundry, the app sends conversation content only to your configured inference endpoint. The app does, by default, send a small amount of operational telemetry (crash reports and product analytics) that helps Anthropic diagnose issues and improve the product. Each category can be disabled independently via managed configuration.
5When Claude Desktop on third-party (3P) is configured with Google Cloud's Agent Platform, Amazon Bedrock, or Microsoft Foundry, the app sends conversation content only to your configured inference endpoint. The app does, by default, send a small amount of operational telemetry (crash reports and product analytics) that helps Anthropic diagnose issues and improve the product. It also checks for updates and fetches the published model catalog, and in [Code](/docs/third-party/claude-desktop/code) sessions Claude Code checks each fetched domain with Anthropic. Each of these connections can be disabled independently via managed configuration, and [Disabling all Anthropic-bound connections](#disabling-all-anthropic-bound-connections) lists them with the key that turns each one off.
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77Data handling at the inference endpoint depends on the provider. For Google Cloud's Agent Platform and Amazon Bedrock, data handling is governed by the cloud provider. For Microsoft Foundry, Anthropic operates the Claude models and handles conversation data as an independent processor for Microsoft. See [Data handling by provider](/docs/third-party/claude-desktop/overview#data-handling-by-provider) on the Overview page for each provider's data path.
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269269## Disabling all Anthropic-bound connections
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271With `disableEssentialTelemetry`, `disableNonessentialTelemetry`, `disableNonessentialServices`, and `disableAutoUpdates` all set to `true`, and [`modelCatalogEnabled`](/docs/third-party/claude-desktop/configuration#modelcatalogenabled) set to `false`, the desktop application makes **no outbound connections to Anthropic-operated hosts at runtime**. Without `modelCatalogEnabled: false`, the app also fetches the signed model catalog from `downloads.claude.ai` at launch and then every 5 to 15 minutes, regardless of the four telemetry and update keys, and on devices installed with the offline installer too. A blocked catalog request affects nothing else, and the model picker keeps the names and effort options the app last fetched or shipped with. To keep the catalog without reaching `downloads.claude.ai`, set [`modelCatalogUrl`](/docs/third-party/claude-desktop/configuration#modelcatalogurl) to a mirror inside your network. If Code sessions can use Web Fetch, also set [`skipWebFetchPreflight`](/docs/third-party/claude-desktop/configuration#skipwebfetchpreflight) to `true` (or add `WebFetch` to `disabledBuiltinTools`), because Claude Code in [Code](/docs/third-party/claude-desktop/code) sessions otherwise checks each fetched domain with `api.anthropic.com`. The only required egress is `downloads.claude.ai` (for the VM workspace bundle and Claude CLI binary at session start) and your inference provider. With the [offline installer variant](/docs/third-party/claude-desktop/installation#offline-installation), `downloads.claude.ai` is not needed either, and your inference provider is the only required egress. Enabling [SSH remote sessions](/docs/third-party/claude-desktop/ssh-remote-sessions) adds `downloads.claude.ai` back, except on devices installed with the offline installer that connect only to Linux x64 or arm64 hosts: that installer bundles the remote-session components for those hosts, and connections to hosts on other platforms still download them. Enabling [import from claude.ai](/docs/third-party/claude-desktop/import) likewise lets the app reach `claude.ai` and `api.anthropic.com` (and `storage.googleapis.com` for the export download), but only while a user runs a sign-in import from the wizard. Turning on the [built-in browser](/docs/third-party/claude-desktop/browser) adds `releases.claude.com`, which the app contacts for the built-in browser's site safety check.
271Claude Desktop can make the following Anthropic-bound connections. Each row names the key that turns that connection off.
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273| Connection | What it carries | Key that turns it off |
274| --------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
275| Crash, error, and performance reporting | Diagnostic metadata, never prompt or response content. See [Essential telemetry](#essential-telemetry). | [`disableEssentialTelemetry`](/docs/third-party/claude-desktop/configuration#disableessentialtelemetry) set to `true` |
276| Product analytics and diagnostic-report uploads | Feature adoption, session counts, and UI interactions, plus Claude Code usage telemetry. No prompt or response content. See [Non-essential telemetry](#non-essential-telemetry). | [`disableNonessentialTelemetry`](/docs/third-party/claude-desktop/configuration#disablenonessentialtelemetry) set to `true` |
277| Connector favicons, artifact previews, and MCP App widgets | Icon fetches, and the sandboxed iframe pages that render previews and widgets. See [Non-essential services](#non-essential-services). | [`disableNonessentialServices`](/docs/third-party/claude-desktop/configuration#disablenonessentialservices) set to `true` |
278| Auto-updates | Requests to Anthropic's update feed, and downloads of new builds. See [Auto-updates](#auto-updates). | [`disableAutoUpdates`](/docs/third-party/claude-desktop/configuration#disableautoupdates) set to `true` |
279| Model catalog | The signed model catalog that labels the model picker, fetched from `downloads.claude.ai` at launch and then every 5 to 15 minutes, including on devices installed with the offline installer. A blocked catalog request affects nothing else. | [`modelCatalogEnabled`](/docs/third-party/claude-desktop/configuration#modelcatalogenabled) set to `false`, or [`modelCatalogUrl`](/docs/third-party/claude-desktop/configuration#modelcatalogurl) set to a mirror inside your network |
280| Web Fetch domain check in [Code](/docs/third-party/claude-desktop/code) sessions | The hostname of each page Claude Code fetches, sent to `api.anthropic.com` before the fetch. See [Web Fetch](/docs/third-party/claude-desktop/web-tools#web-fetch). | [`skipWebFetchPreflight`](/docs/third-party/claude-desktop/configuration#skipwebfetchpreflight) set to `true`, or `WebFetch` added to [`disabledBuiltinTools`](/docs/third-party/claude-desktop/configuration#disabledbuiltintools) |
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282With all six connections turned off, the only remaining Anthropic-operated egress is `downloads.claude.ai`, for the VM workspace bundle and Claude CLI binary at session start. The only other required egress is your inference provider. With the [offline installer variant](/docs/third-party/claude-desktop/installation#offline-installation), `downloads.claude.ai` is not needed either, and your inference provider is the only required egress.
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284These optional features add Anthropic-operated hosts back when you turn them on:
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286* [SSH remote sessions](/docs/third-party/claude-desktop/ssh-remote-sessions) download the remote-session components from `downloads.claude.ai`. The offline installer bundles those components for Linux x64 and arm64 hosts, so devices installed with it download them only when connecting to hosts on other platforms.
287* [Import from claude.ai](/docs/third-party/claude-desktop/import) reaches `claude.ai`, `api.anthropic.com`, and `storage.googleapis.com` (for the export download) only while a user signs in to claude.ai and fetches an export in the import wizard.
288* The [built-in browser](/docs/third-party/claude-desktop/browser) contacts `releases.claude.com` for its [site safety check](/docs/third-party/claude-desktop/browser#site-safety-check).
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273290An app that receives its configuration from the [Enterprise Admin Console](/docs/third-party/claude-desktop/admin-console) still connects to Anthropic with all of these keys set. It never fetches the model catalog (its model names and options come from the console's settings), and it contacts `api.anthropic.com` at every launch and at each configuration check (every 10 minutes by default) to download its configuration. The app contacts `claude.ai` when the user signs in. While the organization's **Report desktop usage to this organization** switch is on, the app also sends [usage analytics](/docs/third-party/claude-desktop/admin-console#usage-analytics) counts to `api.anthropic.com` every few minutes during use. You turn the telemetry categories for these apps on and off on the console's **Telemetry & updates** page.
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