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docs: add extra operations table to pass-through architecture

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Co-authored-by: ishaan <ishaan@berri.ai>
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Cursor Agent 2026-01-23 19:14:05 +00:00
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docs/my-website/docs/pass_through/architecture.md
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@ -44,6 +44,17 @@ sequenceDiagram
- **Auth Header Replacement** - Swap LiteLLM virtual key for actual provider credentials
- **Logging** (optional) - Parse response to extract usage and calculate cost
## Extra Operations
| Operation | Description |
|-----------|-------------|
| `x-pass-*` headers | Strip prefix and forward (e.g., `x-pass-anthropic-beta` → `anthropic-beta`) |
| `x-litellm-tags` header | Extract tags and add to request metadata for logging |
| Streaming chunk collection | Collect chunks async for logging after stream completes |
| Multipart form handling | Reconstruct multipart/form-data requests for file uploads |
| Guardrails (opt-in) | Run content filtering when explicitly configured |
| Cost injection | Inject cost into streaming chunks when `include_cost_in_streaming_usage` enabled |
## What Does NOT Change
- Request body