{
  "markdown": "# Funding Rate Arbitrage Scanner API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://funding-arb.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nFunding rate arbitrage scanner -- Hyperliquid, Binance, Bybit, OKX cross-venue spreads and annualized yields. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"funding-arb\": {\n      \"url\": \"https://funding-arb.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl \"https://funding-arb.api.klymax402.com/api/scan\"\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `perp_scan_funding_arbitrage` | GET | `/api/scan` | $0.002 | Scan funding rate arbitrage opportunities across perpetual exchanges |\n\n### `perp_scan_funding_arbitrage`\n\nUse this when you need to find funding rate arbitrage opportunities across perpetual exchanges. Returns cross-venue spreads in JSON.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `symbol` | string | no | Filter by asset symbol (e.g. BTC, ETH, SOL). Optional — scans all assets if omitted. |\n\n**Returns**\n\n- `opportunities` -- array of arb opportunities ranked by annualized yield\n- `symbol` -- asset symbol (BTC, ETH, SOL, etc.)\n- `longExchange` -- exchange where you go long (lower funding)\n- `shortExchange` -- exchange where you go short (higher funding)\n- `spread` -- funding rate difference between venues\n- `annualizedYield` -- estimated annualized return from the arb\n- `direction` -- suggested position direction per exchange\n\nExample response:\n\n```json\n{\"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\"}\n```\n\n**When to use**: systematic funding rate arbitrage and delta-neutral carry strategies. Scans all major perpetual venues simultaneously.\n\n**Not for**: spot prices (use `dex_get_swap_quote`), DeFi yields (use `defi_find_best_yields`).\n\n## Example agent prompts\n\n- \"Find funding rate arbitrage opportunities across perpetual exchanges\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "repo_slug": "br0ski777/funding-arb-x402",
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  "api": "https://agentalog.com/api/listings/mcp_io_github_br0ski777_funding_arb_b27d7e52/readme"
}