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Funding Rate Arbitrage Scanner API

Official registry Other

Cross-venue perp funding rate arb — Hyperliquid, Binance, Bybit, OKX spreads. x402.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse funding-rate-arbitrage-scanner-api 'https://funding-arb.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "funding-rate-arbitrage-scanner-api": {
            "type": "sse",
            "url": "https://funding-arb.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Funding Rate Arbitrage Scanner API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

Funding Rate Arbitrage Scanner API

Funding rate arbitrage scanner -- Hyperliquid, Binance, Bybit, OKX cross-venue spreads and annualized yields. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "funding-arb": {
      "url": "https://funding-arb.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://funding-arb.api.klymax402.com/api/scan"
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

ToolMethodPathPriceDescription
perp_scan_funding_arbitrageGET/api/scan$0.002Scan funding rate arbitrage opportunities across perpetual exchanges
perp_scan_funding_arbitrage

Use this when you need to find funding rate arbitrage opportunities across perpetual exchanges. Returns cross-venue spreads in JSON.

Parameters

NameTypeRequiredDescription
symbolstringnoFilter by asset symbol (e.g. BTC, ETH, SOL). Optional — scans all assets if omitted.

Returns

  • opportunities -- array of arb opportunities ranked by annualized yield
  • symbol -- asset symbol (BTC, ETH, SOL, etc.)
  • longExchange -- exchange where you go long (lower funding)
  • shortExchange -- exchange where you go short (higher funding)
  • spread -- funding rate difference between venues
  • annualizedYield -- estimated annualized return from the arb
  • direction -- suggested position direction per exchange

Example response:

{"opportunities":[{"symbol":"ETH","longExchange":"Bybit","shortExchange":"OKX","spread":0.0045,"annualizedYield":16.4,"direction":"long Bybit / short OKX"}],"scannedAssets":25,"timestamp":"2026-04-13T12:00:00Z"}

When to use: systematic funding rate arbitrage and delta-neutral carry strategies. Scans all major perpetual venues simultaneously.

Not for: spot prices (use dex_get_swap_quote), DeFi yields (use defi_find_best_yields).

Example agent prompts

  • "Find funding rate arbitrage opportunities across perpetual exchanges"

Payment

  • Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
  • Network: Base L2 (eip155:8453)
  • Asset: USDC
  • Facilitator: Coinbase CDP (primary), PayAI (fallback)
  • Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

License

MIT

Frequently asked questions

What is Funding Rate Arbitrage Scanner API?

Cross-venue perp funding rate arb — Hyperliquid, Binance, Bybit, OKX spreads. x402.

How do I install Funding Rate Arbitrage Scanner API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse funding-rate-arbitrage-scanner-api 'https://funding-arb.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Funding Rate Arbitrage Scanner API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Funding Rate Arbitrage Scanner API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Funding Rate Arbitrage Scanner API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.