Documentation Index
Fetch the complete documentation index at: https://docs.arouter.ai/llms.txt
Use this file to discover all available pages before exploring further.
Zero Data Retention (ZDR) is a routing constraint that limits ARouter to providers that have formally agreed not to store your prompts, completions, or any request data for training, logging, or any other purpose.
How ZDR Works
When ZDR is enabled for a request, ARouter:
- Filters the provider pool to only ZDR-compliant endpoints
- Routes the request to a compliant provider
- Returns
provider.zdr: true in the response metadata
If no ZDR-compliant provider is available for the requested model, the request fails with a 404 error.
Enabling ZDR Per Request
Add zdr: true in the provider object:
{
"model": "openai/gpt-5.4",
"messages": [{"role": "user", "content": "Analyze this confidential document..."}],
"provider": {
"zdr": true
}
}
from openai import OpenAI
client = OpenAI(
base_url="https://api.arouter.ai/v1",
api_key="lr_live_xxxx",
)
response = client.chat.completions.create(
model="openai/gpt-5.4",
messages=[
{"role": "user", "content": "Analyze this confidential document..."}
],
extra_body={"provider": {"zdr": True}},
)
print(response.choices[0].message.content)
const response = await client.chat.completions.create({
model: "openai/gpt-5.4",
messages: [{ role: "user", content: "Analyze this confidential document..." }],
// @ts-expect-error ARouter extension
provider: { zdr: true },
});
curl https://api.arouter.ai/v1/chat/completions \
-H "Authorization: Bearer lr_live_xxxx" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5.4",
"messages": [{"role": "user", "content": "Analyze this confidential document..."}],
"provider": {"zdr": true}
}'
Account-Wide ZDR
Enforce ZDR for all requests made with an API key via the Dashboard or API:
curl -X PATCH https://api.arouter.ai/api/v1/keys/{key_hash} \
-H "Authorization: Bearer lr_admin_xxxx" \
-H "Content-Type: application/json" \
-d '{"enforce_zdr": true}'
ZDR vs Data Collection
| Concept | Scope | Who controls it |
|---|
| ZDR | Provider-level: no storage by provider | ARouter routing policy |
| Data Collection | ARouter-level: what ARouter stores | ARouter privacy settings |
Caching and ZDR
ZDR does not prevent prompt caching. Caching is a performance optimization, not a form of data retention — cached prompts are stored ephemerally for latency reduction and are not accessible to other customers or used for training.
ZDR Endpoints
Use GET /api/v1/endpoints/zdr to list all models and provider endpoints that support ZDR:
curl https://api.arouter.ai/api/v1/endpoints/zdr \
-H "Authorization: Bearer lr_live_xxxx"
{
"endpoints": [
{
"model": "openai/gpt-5.4",
"provider": "OpenAI",
"zdr": true,
"context_length": 128000
},
{
"model": "anthropic/claude-sonnet-4.6",
"provider": "Anthropic",
"zdr": true,
"context_length": 200000
}
]
}
