Telemetry and egress changedthird-party/claude-desktop/telemetry
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Upstream edited this page at 5 Nov 2026 18:33 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 5 Nov 2026 18:37 UTC.
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3838
3939### Non-essential services
4040
41Cosmetic third-party fetches: favicons for connectors shown in the UI, the sandboxed iframe that renders interactive artifact previews, and the sandboxed iframes that render [MCP Apps](https://claude.com/docs/connectors/building/mcp-apps/getting-started.md), the interactive widgets connectors can display. Disabling these degrades the UI (generic icons, static artifact previews, and connector tool results shown as text instead of widgets) but doesn't affect functionality. On Linux, `disableNonessentialServices` also applies to the spellcheck dictionary, which the built-in spellchecker downloads from the hosts listed under [Required egress paths](#required-egress-paths). Without the dictionary, misspelled words aren't underlined.
41Cosmetic third-party fetches: favicons for connectors shown in the UI, the sandboxed iframe that renders interactive artifact previews, and the sandboxed iframes that render [MCP Apps](https://claude.com/docs/connectors/building/mcp-apps/getting-started.md), the interactive widgets connectors can display. Disabling these degrades the UI (generic icons, static artifact previews, and an error in place of each connector widget). On Linux, `disableNonessentialServices` also applies to the spellcheck dictionary, which the built-in spellchecker downloads from the hosts listed under [Required egress paths](#required-egress-paths). Without the dictionary, misspelled words aren't underlined.
4242
4343| Setting | Default | Effect when `true` |
4444| - | - | - |
45| `disableNonessentialServices` | `false` | Favicon, artifact-preview, and MCP App widget fetches are blocked. Connectors that return MCP Apps show the tool's text result instead of the widget. On Linux, the setting also applies to the spellcheck dictionary download. Without the dictionary, misspelled words aren't underlined. |
45| `disableNonessentialServices` | `false` | Favicon, artifact-preview, and MCP App widget fetches are blocked. In place of an MCP App widget, the conversation shows "There was a problem displaying content from" and the connector's name. On Linux, the setting also applies to the spellcheck dictionary download. Without the dictionary, misspelled words aren't underlined. |
4646
4747### Auto-updates
4848
No line in this hunk matches that.