# Nova Retail State Ping

> Nova Retail State Ping is a paid API for AI agents from nova-retail-controlled-proof.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).

Sends a context state-ping to the Nova Retail service to check or update retail session/context state

## Facts

- Endpoint: POST https://nova-retail-controlled-proof.onrender.com/retail/v1/context/state-ping?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nova-retail-state-ping-e787323a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9ywAqRlEOkYjTXy3unsWR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nova-retail-state-ping-e787323a -d '<json body>'
```

Example prompt: Send a state-ping to the Nova Retail context service to check if my current retail session context is active and in sync.

## When to prefer this

Use this endpoint when you need to send a lightweight state-ping or heartbeat to the Nova Retail context service to verify, update, or maintain an active retail session or context state. Prefer this over full context retrieval endpoints when only a state acknowledgment is needed.

## Known failure modes

- Missing or invalid context payload returns 400 Bad Request
- Expired or unknown session returns 404 or 401
- Payment not included or insufficient (x402 payment required) returns 402 Payment Required
- Service unavailable on Render.com free tier cold start returns 503 or timeout
- Malformed request body returns 422 Unprocessable Entity

## How this service works

Nova retail state_ping context resource

## Output

Returns an acknowledgment or status response confirming whether the retail context state ping was received and processed, potentially including session validity status and current context state information.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "evidence": [],
  "provenance": [],
  "limitations": [],
  "resource_type": "state_ping",
  "context_status": "partially_resolved",
  "contradictions": [],
  "authority_effect": "none",
  "unresolved_evidence": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nova-retail-state-ping-e787323a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nova-retail-controlled-proof.onrender.com](https://www.zero.xyz/host/nova-retail-controlled-proof.onrender.com/llms.txt)