# Nami Top-of-Book for Venue/Symbol

> Nami Top-of-Book for Venue/Symbol is a paid API for AI agents from api.usenami.io, paid per call via x402, $0.001000/call, status unknown (last checked 2026-09-13).

Returns the current best bid and ask prices and sizes (top-of-book) for a specific trading venue and symbol

## Facts

- Endpoint: GET https://api.usenami.io/v1/orderbook/hyperliquid/BTC/top
- Price: $0.001000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-usenami-io-096ceca0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GC8VXB6vNu4_OV1j-RJJz

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 api-usenami-io-096ceca0
```

Example prompt: What's the current best bid and ask for BTC on Hyperliquid right now — show me prices and sizes at the top of the book?

## When to prefer this

Use this endpoint when you need a fast, real-time snapshot of the current best bid/ask for a specific venue and symbol (e.g. BTC on Hyperliquid) rather than aggregated cross-venue quotes or depth-of-book data. Prefer this over the aggregated best bid/ask endpoint when venue-specific execution or arbitrage analysis is the goal.

## Known failure modes

- Unknown venue or symbol returns 404 or empty response
- Network timeout if the venue feed is temporarily unavailable
- Stale data if venue feed latency spikes
- Malformed input type/method fields return 400 validation error
- Rate limit exceeded returns 429

## How this service works

Top-of-book for a specific venue and symbol

## Output

Returns a JSON object with the venue name, symbol, timestamp, best bid price, best ask price, bid size, and ask size at the top of the orderbook for the requested venue/symbol pair.

## Example request

```json
{
 "input": {
  "type": "GET",
  "method": "orderbook"
 }
}
```

## 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"
    },
    "method": {
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-usenami-io-096ceca0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.usenami.io](https://www.zero.xyz/host/api.usenami.io/llms.txt)