> ## Documentation Index
> Fetch the complete documentation index at: https://docs.inquantum.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Native Anthropic Passthrough

> Proxy Anthropic-native routes through the Planck AI Gateway.

Planck supports Anthropic-native passthrough at:

```text theme={null}
https://api.inquantum.ai/anthropic/v1/*
```

Use this when an Anthropic-specific endpoint or request shape is not covered by the mapped `/v1/messages` route.

## Example Request

```bash theme={null}
curl https://api.inquantum.ai/anthropic/v1/messages \
  -H "Planck-Auth: Bearer $PLANCK_API_KEY" \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-4.5-sonnet",
    "max_tokens": 256,
    "messages": [{ "role": "user", "content": "Say hello." }]
  }'
```

For most application traffic, prefer `/v1/messages` so the gateway can apply the mapped request pipeline consistently.