# x402helper Derivatives Funding Rates Endpoint

> x402helper Derivatives Funding Rates Endpoint is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.013/call, status unknown (last checked 2026-10-31).

Returns funding rates and related derivatives data for a given crypto asset symbol, paid via x402 USDC micropayment.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/derivs/funding?utm_source=zero.xyz
- Price: $0.013/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402helper-derivatives-funding-rates-endpoint-05b780de
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SE1YBDccoQj99iSW9rADI

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 x402helper-derivatives-funding-rates-endpoint-05b780de
```

Example prompt: What's the current funding rate for BTC perpetuals?

## When to prefer this

Use this endpoint when you need current funding rate data for major crypto derivatives (BTC, ETH, SOL) and are operating in an x402-enabled micropayment environment. It accepts both base tickers (BTC) and full symbol formats (BTC-USD, BTC-PERP), normalizing them server-side. Prefer this over manual scraping when you need a programmatic, pay-per-call approach to derivatives data.

## Known failure modes

- Missing or invalid `symbol` query parameter returns an error
- Unrecognized ticker symbol may return empty or error result
- Payment failure (USDC x402 payment not completed) blocks access with HTTP 402
- Rate limiting or server errors may return 5xx responses
- Network timeout if the upstream derivatives data source is unavailable

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

A JSON object with a `success` boolean and a `result` object containing funding rate and derivatives data for the requested symbol (e.g. BTC, ETH, SOL). Exact fields within `result` are dynamic but reflect current funding rate conditions for the queried asset.

## 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",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "default": null,
       "description": "Base asset ticker (BTC, ETH, SOL). A quote suffix such as BTC-USD or BTC-PERP is accepted and normalized server-side."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402helper-derivatives-funding-rates-endpoint-05b780de/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)