# ByKaranteli Leverage Tiers History

> ByKaranteli Leverage Tiers History is a paid API for AI agents from bykaranteli.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-10).

Returns the full historical record of perpetual futures leverage tier ladders across major crypto exchanges, including tier boundaries, notional caps, max leverage, and maintenance margin with time-range validity.

## Facts

- Endpoint: GET https://bykaranteli.com/api/x402/leverage-tiers-history?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bykaranteli-leverage-tiers-history-0e1c41fd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__9YdLfJJawqLwU47ReukS

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 bykaranteli-leverage-tiers-history-0e1c41fd
```

Example prompt: Pull the full leverage tier history for BTC perpetuals on Bybit and OKX from January 2024 to now — I want to see every tier's notional floor, notional cap, max leverage, and maintenance margin, and when each version was valid.

## When to prefer this

Use this endpoint when you need point-in-time or historical leverage tier data for perpetual futures — especially to audit when exchanges changed their leverage ladders, reconstruct margin requirements for backtesting, or compare tier structures across venues over time. The free endpoint only returns the current ladder; this paid endpoint is required for any historical analysis.

## Known failure modes

- Invalid or unsupported exchange venue ID returns empty results or error
- Symbol not found on specified exchange returns no records
- Date range with no historical changes returns empty array
- Limit exceeded (max 20000) may be rejected or truncated
- Malformed ISO date strings in from/to parameters cause validation errors
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Every recorded version of each perpetual's leverage ladder on every venue whose ladders we read: tier, notional floor and cap, maximum leverage and maintenance margin, with valid_from and valid_to so leverage cuts can be dated. The free endpoint serves only the current ladder.

## Output

A list of leverage tier records, each containing the exchange venue, asset symbol, tier number, notional floor and cap, maximum leverage allowed, maintenance margin rate, valid_from datetime, and valid_to datetime (null if currently active). Filterable by asset, exchange, and date range.

## 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": {
      "to": {
       "type": "string",
       "description": "iso, optional"
      },
      "from": {
       "type": "string",
       "description": "iso, optional, valid_from lower bound"
      },
      "limit": {
       "type": "number",
       "description": "number, optional, max 20000"
      },
      "symbol": {
       "type": "string",
       "description": "string, optional base asset, e.g. BTC"
      },
      "exchange": {
       "type": "string",
       "description": "string, optional venue id: bybit | okx | gate | htx | bitget | mexc ..."
      }
     }
    }
   },
   "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/bykaranteli-leverage-tiers-history-0e1c41fd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bykaranteli.com](https://www.zero.xyz/host/bykaranteli.com/llms.txt)