# Nami Sized-Depth Quote: Best Bid/Ask + Slippage Tiers for Binance BTC

> Nami Sized-Depth Quote: Best Bid/Ask + Slippage Tiers for Binance BTC is a paid API for AI agents from api.usenami.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns best bid/ask prices plus precomputed slippage costs at $1K, $5K, and $10K notional for BTC on Binance via a sized-depth orderbook aggregate.

## Facts

- Endpoint: GET https://api.usenami.io/v1/orderbook/depth/aggregate/binance/BTC
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nami-sized-depth-quote-best-bid-ask-slippage-tiers-for-binance-btc-bb40a6a9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TpnAFF0Mgiix9iXlC1zk4

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 nami-sized-depth-quote-best-bid-ask-slippage-tiers-for-binance-btc-bb40a6a9
```

Example prompt: What's the current best bid/ask for BTC on Binance, and how much slippage would I face on a $5,000 trade? I need the precomputed slippage tiers too.

## When to prefer this

Use this endpoint when you need real-time sized-depth execution quotes for BTC on Binance specifically — including precomputed slippage at standard notional tiers ($1K/$5K/$10K). Prefer this over generic orderbook endpoints when you need execution cost estimation baked in rather than computing it yourself from raw orderbook data.

## Known failure modes

- Invalid symbol returns 404 or empty response
- Venue temporarily unavailable returns 503 or stale data warning
- Notional cap exceeded ($10K max) may result in truncated or refused response
- Network timeout if Binance feed is delayed
- Authentication/payment failure returns 402 Payment Required

## How this service works

Sized-depth quote: best bid/ask + precomputed slippage at $1K/$5K/$10K notional for a venue/symbol. $10K cap protects execution edge per DIS-022.

## Output

Returns best bid price, best ask price, and precomputed slippage estimates at $1K, $5K, and $10K notional for the BTC/USD pair on Binance — capped at $10K per DIS-022 execution edge protection policy.

## 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/nami-sized-depth-quote-best-bid-ask-slippage-tiers-for-binance-btc-bb40a6a9/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)