# claw402 NOFX Funding Rate Top — x402 API Payment Gateway

> claw402 NOFX Funding Rate Top — x402 API Payment Gateway is a paid API for AI agents from claw402.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns the top perpetual futures funding rates across crypto markets, accessible via micropayment with USDC and no API key required.

## Facts

- Endpoint: GET https://claw402.ai/api/v1/nofx/funding-rate/top
- 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/claw402-nofx-funding-rate-top-x402-api-payment-gateway-1c7fdd8a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zuRpxCW_8UQfQRppzMqPG

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 claw402-nofx-funding-rate-top-x402-api-payment-gateway-1c7fdd8a
```

Example prompt: What are the top 10 crypto perpetual futures funding rates right now? Pay for it with my USDC wallet — I don't have any API keys set up.

## When to prefer this

Choose this endpoint when you need ranked funding rate data for crypto perpetual futures without wanting to manage API keys or subscriptions. Ideal for AI agents operating with USDC wallets in an x402 micropayment context, or when you need a quick, pay-per-call funding rate snapshot rather than a persistent data subscription.

## Known failure modes

- Payment not included or insufficient USDC — returns HTTP 402 requiring x402 micropayment
- Invalid limit query parameter type — may return empty data or error
- Backend vergex.trade data source unavailable — returns empty data array or service error
- Malformed request — returns non-zero code in response body

## How this service works

Backed by vergex.trade. Pay for any API with USDC. No API keys. No registration. Just a wallet.

## Output

Returns a JSON object with a status code and a data array containing the top funding rate entries for perpetual futures markets, ranked by rate magnitude. Each entry likely includes trading pair symbol and current funding rate value.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "limit": "10"
  }
 }
}
```

## 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": {
      "limit": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "code": 0,
  "data": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/claw402-nofx-funding-rate-top-x402-api-payment-gateway-1c7fdd8a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from claw402.ai](https://www.zero.xyz/host/claw402.ai/llms.txt)