# Turkish Lira Premium via BTC Cross-Rate

> Turkish Lira Premium via BTC Cross-Rate is a paid API for AI agents from agenttoll.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns the implied USD/TRY rate derived from BTC cross-prices versus the official USD/TRY rate, expressing the Turkish lira premium or discount

## Facts

- Endpoint: GET https://agenttoll.app/api/try/premium
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/turkish-lira-premium-via-btc-cross-rate-9c3c2d19
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hXCxpvjeJnjG7C8XWH4Hb

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 turkish-lira-premium-via-btc-cross-rate-9c3c2d19
```

Example prompt: What's the current Turkish lira premium — how does the implied USD/TRY rate from the BTC cross-rate compare to the official rate right now?

## When to prefer this

Use this endpoint when you need a single computed signal for Turkish lira currency distortion or black-market premium, derived from crypto cross-rates rather than official forex channels. Prefer this over raw exchange rate lookups when the goal is to quantify the divergence between market-implied and official TRY pricing. Particularly useful for macroeconomic monitoring, emerging market analysis, or detecting capital controls arbitrage windows.

## Known failure modes

- Upstream price feed unavailable — cross-rate cannot be computed
- Official TRY rate feed stale or unavailable — premium calculation fails
- Invalid asset parameter value returns error or falls back to BTC default
- Rate limiting or payment failure returns 402 Payment Required

## How this service works

Turkish lira crypto premium check: implied USD/TRY from a crypto cross-rate versus the official rate; ?asset=usdt is the reading desks quote

## Output

Returns the implied USD/TRY rate computed from the chosen crypto cross-rate (default BTC), the official USD/TRY rate, and the premium or discount expressed as a percentage difference between them.

## 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": {
      "asset": {
       "enum": [
        "btc",
        "eth",
        "usdt",
        "usdc"
       ],
       "type": "string",
       "description": "Optional. Cross-rate asset, default btc"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "at": "2026-08-05T13:31:58.678Z",
  "asset": "usdt",
  "assetTry": 47.53,
  "assetUsd": 0.999318,
  "premiumPct": 0.578,
  "impliedUsdTry": 47.5624,
  "officialUsdTry": 47.2891
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/turkish-lira-premium-via-btc-cross-rate-9c3c2d19/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.app](https://www.zero.xyz/host/agenttoll.app/llms.txt)