Claude apps gateway configuration changedclaude-apps-gateway-config
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Upstream edited this page at 4 Oct 2026 15:48 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 4 Oct 2026 16:07 UTC.
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215215`upstreams` is an ordered list. The gateway forwards inference to the first upstream that resolves the requested model.
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217On `5xx`, `429`, `401`, `403`, `404`, or timeout the gateway fails over to the next upstream; other `4xx` doesn't, because those errors are attributable to the request rather than the upstream. A `401` or `403` means the credential the gateway used against that upstream failed. A `404` means that upstream doesn't serve the requested model, so a later upstream in the list still can.
217On `5xx`, `429`, `401`, `403`, `404`, or timeout the gateway fails over to the next upstream; other `4xx` doesn't, because those errors are attributable to the request rather than the upstream. A `401` or `403` means the upstream rejected the credential the gateway used, or denied it access, for example to the requested model. A `404` means that upstream doesn't serve the requested model, so a later upstream in the list still can.
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219219If you set `forward_user_identity: true` on an upstream, a `429` it returns to a request that carried the developer's email doesn't fail over. See [how a per-user limit denial reaches the developer](#per-user-identity-headers-for-a-proxy-you-run).
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