# NAV Premium Tokens with Arbitrage Flag Monitor

> NAV Premium Tokens with Arbitrage Flag Monitor is a paid API for AI agents from yonder-spotless-stranger.ngrok-free.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns a list of tokens trading above net asset value (NAV) whose arbitrage redemption mechanism is currently disabled, plus the on-chain flag to watch for when it re-enables.

## Facts

- Endpoint: GET https://yonder-spotless-stranger.ngrok-free.dev/nav-premiums
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nav-premium-tokens-with-arbitrage-flag-monitor-30f4566d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iPMnvQ5lyZItJerXtVH1y

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 nav-premium-tokens-with-arbitrage-flag-monitor-30f4566d
```

Example prompt: Show me all tokens currently trading above their net asset value where the on-chain arbitrage mechanism is switched off — I want the premium percentage and the exact on-chain flag to watch so I can jump in the moment arbitrage reopens.

## When to prefer this

Choose this endpoint when you need to proactively monitor for arbitrage re-activation events on NAV-premium tokens, rather than just checking whether a token is blocked from redemption. It is uniquely suited for trading bots or alert systems that need the exact on-chain tripwire to act immediately when arbitrage reopens, rather than discovering the opportunity after the fact.

## Known failure modes

- No tokens currently meet the criteria (empty list returned)
- On-chain data temporarily unavailable due to RPC issues
- Stale data if block indexing lags behind chain tip
- ngrok tunnel downtime causing connection errors
- Payment failure via x402 protocol returning 402 status

## How this service works

Tokens trading ABOVE net asset value while their arbitrage mechanism is switched off, plus the exact on-chain flag to watch for it reopening. The premium is not capturable until that flag flips — this endpoint gives you the tripwire so you are first when it does.

## Output

A list of tokens currently trading above their net asset value where the arbitrage mechanism is disabled, including the premium percentage, token identifiers, current NAV, current price, and the specific on-chain flag or contract state variable to monitor that will signal when the arbitrage mechanism re-enables.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nav-premium-tokens-with-arbitrage-flag-monitor-30f4566d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from yonder-spotless-stranger.ngrok-free.dev](https://www.zero.xyz/host/yonder-spotless-stranger.ngrok-free.dev/llms.txt)