# klymax402 Crypto Funding Rates API

> klymax402 Crypto Funding Rates API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Fetches current perpetual futures funding rates for a given token symbol across multiple exchanges

## Facts

- Endpoint: GET https://klymax402.com/api/funding-rates/api/rates
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-crypto-funding-rates-api-daa2778f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UgVOF50lLc1gJpf1II7xE

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 klymax402-crypto-funding-rates-api-daa2778f
```

Example prompt: What's the current perpetual futures funding rate for ETH across exchanges right now?

## When to prefer this

Choose this endpoint when you need real-time perpetual futures funding rate data for a specific cryptocurrency token across multiple exchanges in a single call, without managing individual exchange API keys. Particularly useful for trading bots, DeFi dashboards, or agents making funding-rate-aware position decisions.

## Known failure modes

- Unsupported or unrecognized token symbol returns empty rates array or found=false
- Network timeout or upstream exchange data unavailability
- Missing required 'symbol' query parameter causes request failure
- Symbol string format mismatch (e.g. lowercase vs uppercase) may return no results

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

Returns a JSON object containing the token symbol, the trading pair, a list of funding rates from multiple exchanges, the number of exchanges reporting, and a timestamp indicating when the data was fetched.

## 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": [],
     "properties": {
      "sort": {
       "enum": [
        "abs",
        "highest",
        "lowest",
        "spread"
       ],
       "type": "string",
       "description": "Scan mode only. 'abs' = largest absolute funding first (default), 'highest' = most positive first, 'lowest' = most negative first, 'spread' = largest cross-venue gap first."
      },
      "limit": {
       "type": "number",
       "description": "Scan mode only. Number of markets to return. Default 50, max 1000."
      },
      "symbol": {
       "type": "string",
       "description": "Token symbol (e.g. BTC, ETH, SOL). Optional -- omit it to scan every market instead of one asset."
      },
      "minVenues": {
       "type": "number",
       "description": "Scan mode only. Set to 2 to keep only markets listed on both venues, which is what cross-venue carry requires. Default 1."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "pair": "example",
  "found": true,
  "rates": [],
  "symbol": "example",
  "exchanges": 1,
  "timestamp": "example"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-crypto-funding-rates-api-daa2778f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)