# ByKaranteli TradFi Perpetuals Funding History

> ByKaranteli TradFi Perpetuals Funding History is a paid API for AI agents from bykaranteli.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Returns per-settlement funding rate history for the top-40 Binance TradFi perpetuals (e.g. TSLAUSDT) with optional date range and symbol filtering.

## Facts

- Endpoint: GET https://bykaranteli.com/api/x402/tradfi-funding-history
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bykaranteli-tradfi-perpetuals-funding-history-b5f61281
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nJyBybbr-xqGk_GKgOq6c

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-tradfi-perpetuals-funding-history-b5f61281
```

Example prompt: Pull the per-settlement funding rate history for TSLAUSDT from ByKaranteli from January 1 2025 to March 31 2025, up to 1000 rows.

## When to prefer this

Choose this endpoint when you need granular, per-settlement funding rate history specifically for Binance TradFi (equity-linked) perpetuals such as TSLAUSDT or AAPLUSDT. It is ideal for backtesting carry strategies, modeling funding costs, or studying the funding dynamics of stock-linked crypto derivatives. Unlike generic crypto funding feeds, this dataset is curated specifically for the top-40 TradFi perpetuals with history going back to 2026-09-02.

## Known failure modes

- Symbol not in top-40 TradFi list returns empty rows or an error
- Requesting data before 2026-09-02 returns no rows (dataset starts then)
- Limit exceeding 20000 may be capped or rejected
- Missing payment or insufficient USDC balance returns HTTP 402
- Invalid ISO date format in 'from' or 'to' returns a validation error
- Free tier only returns the last settled rate; full history requires payment

## How this service works

Settled funding rate history of the top-40 Binance TradFi perpetuals at per-settlement granularity, recorded from 2026-09-02; the free board only carries the last settled rate.

## Output

A JSON object with an 'ok' boolean, a 'dataset' label ('tradfi-funding-history'), a 'count' integer indicating the number of rows returned, and a 'rows' array where each entry represents one funding settlement event for the queried TradFi perpetual symbol, including the rate and timestamp.

## 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"
      },
      "limit": {
       "type": "number",
       "description": "number, optional, max 20000"
      },
      "symbol": {
       "type": "string",
       "description": "string, optional, e.g. TSLAUSDT"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "rows": [],
  "count": 500,
  "dataset": "tradfi-funding-history"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bykaranteli-tradfi-perpetuals-funding-history-b5f61281/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)