Summary
Connects Claude to real-time perpetual futures funding rates across Hyperliquid, Binance, Bybit, and OKX to spot arbitrage opportunities. Built for crypto trading agents that need to monitor cross-venue spreads and execute funding rate strategies. The server exposes data through a remote API at funding-arb.api.klymax402.com, letting you query current rates and spreads without running your own exchange integrations. Useful when you're building automated strategies that profit from funding rate differentials or need to monitor positions across multiple venues. The x402 designation suggests this is part of a specific trading system or fund identifier.
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Public tool metadata for what this MCP can expose to an agent.
1 tools
perp_scan_funding_arbitrageUse this when you need to find funding rate arbitrage opportunities across perpetual exchanges. Returns cross-venue spreads in JSON. 1. opportunities: array of arb opportunities ranked by annualized1 params
Use this when you need to find funding rate arbitrage opportunities across perpetual exchanges. Returns cross-venue spreads in JSON. 1. opportunities: array of arb opportunities ranked by annualized
Parameters* required
symbolstringFilter by asset symbol (e.g. BTC, ETH, SOL). Optional — scans all assets if omitted.
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
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
perp_scan_funding_arbitrage | GET | /api/scan | $0.002 | Scan 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
| Name | Type | Required | Description |
|---|---|---|---|
symbol | string | no | Filter by asset symbol (e.g. BTC, ETH, SOL). Optional — scans all assets if omitted. |
Returns
opportunities-- array of arb opportunities ranked by annualized yieldsymbol-- 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 venuesannualizedYield-- estimated annualized return from the arbdirection-- 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.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
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