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HomeDocsClaude Documentation 11 Oct 2026
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Deploy Claude Desktop on 3P with an LLM gateway changedthird-party/claude-desktop/gateway

Upstream edited this page at 11 Oct 2026 22:46 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 11 Oct 2026 23:07 UTC.

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369369* **A timeout, `504`, or `524`**: a proxy or load balancer on the route closed the summary response before it finished. See the streaming requirement in [Context window and compaction](#context-window-and-compaction).
370370* **`401`, `402`, or `403`**: the gateway credential expired, or the gateway's quota for the user is spent. Have the user sign in again or issue a new key, or raise the quota.
371* **`API returned an empty or malformed response`**: a proxy, firewall, or sign-in page on the route answered in place of the provider. Look for the summary request in the gateway's logs, and if it isn't there, something in front of the gateway answered it.
371* **`API returned an empty or malformed response`**: after certain streaming failures, such as a stream that stops partway, Claude Code sends the summary request again with the `stream` field set to `false`. This message means that the non-streaming request got a success status but a body that wasn't a Messages API response, for example an empty body, an HTML page, a stream of server-sent events, or JSON in another format. Find that request in the gateway's logs and check what the gateway returned for it. If the request isn't in the logs, something in front of the gateway, such as a proxy, firewall, or sign-in page, answered it.
372372* **`400` with your gateway's own error text**: the gateway rejected the summary request itself, for example on a request-size or token limit of its own. Raise or remove that limit for these requests.
373373 
374374For `Prompt is too long` without `automatic compaction failed`, or your gateway's own request-too-large error shown in the session, check the `usage` and error-forwarding requirements in [Context window and compaction](#context-window-and-compaction) first. [Prompt is too long](https://code.claude.com/docs/en/errors#prompt-is-too-long) in the Claude Code error reference covers the other causes.
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