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# Function detect_request_surface_with_hint

> Like `detect_request_surface`, but a recognized `provider_hint` resolves the one ambiguous shape (an Anthropic request without a top-level `system`, otherwise read as OpenAI Chat). Today, only the exact hints `"anthropic"` and `"anthropic.messages"` change detection; `None` or any other value is ignored and detection stays shape-only.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-pii-redaction -p nemo-relay-ffi -p nemo-relay-types -p nemo-relay-plugin -p nemo-relay-worker-proto -p nemo-relay-worker`.

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Like [`detect_request_surface`](/reference/api/rust-library-reference/nemo-relay/codec/resolve/fn-detect-request-surface), but a recognized `provider_hint` resolves the one ambiguous shape (an Anthropic request without a top-level `system`, otherwise read as OpenAI Chat). Today, only the exact hints `"anthropic"` and `"anthropic.messages"` change detection; `None` or any other value is ignored and detection stays shape-only.