Live proxy and collect
Capture live traffic and shadow-replay it across candidate models.
1. Set up the proxy
Create a proxied endpoint. RedCrown forwards real traffic to your incumbent model and captures a sampled fraction for shadow replay.
Open Advanced and navigate to Live traffic (/advanced/live-traffic). Click New endpoint, enter your upstream URL and candidate models, then click Create. RedCrown returns an endpoint key and a forward URL to point your application at.
Not available via the CLI. Use the app or MCP.
Call setup_proxy with your upstream URL and the candidate models to shadow:
{
"name": "production-transcription",
"upstream_url": "https://your-model-endpoint.example.com/v1/transcribe",
"candidates": ["whisper-large-v3", "nova-2-medical"]
}The response includes the endpoint key and the forward URL. Update your application to send traffic to the forward URL instead of the upstream directly.
2. List endpoints
Review all proxied endpoints in your workspace, including their capture counts and sampling rates.
The Live traffic page (/advanced/live-traffic) lists all endpoints with their status, capture count, and daily budget remaining.
Not available via the CLI. Use the app or MCP.
Call list_proxies with no arguments to retrieve all endpoints in the current workspace:
{}Each entry includes the endpoint ID, name, upstream URL, capture count, and sampling rate.
3. Replay captures
Fan captured traffic across every candidate model and store the scored outputs for comparison or reviewer sign-off.
On the Live traffic page, click Replay on an endpoint. RedCrown fans the captured inputs across all candidate models and links the results to the endpoint.
Not available via the CLI. Use the app or MCP.
Call replay_captures with the endpoint ID:
{
"endpoint_id": "<endpoint-id>"
}RedCrown decrypts each stored capture, fans it across the non-incumbent candidates, scores relative to the incumbent, and persists one result row per capture per candidate.
Last verified .