Funding Rate Arbitrage Scanner API

io.github.Br0ski777Published by GitHub account Br0ski777v1.1.0Updated Oct 24, 2026

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

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Overview

AI-generated overview

Remote MCP endpoint that scans perpetual futures exchanges for cross-venue funding rate arbitrage opportunities, paid per call in USDC via x402.

What you can do
  • Scan funding rate arbitrage opportunities across perpetual exchanges, optionally filtered by asset symbol
  • Return ranked opportunities with long and short venue, spread, annualized yield and suggested direction
  • Report the number of assets scanned and a timestamp with each result
When to use it
Useful when an assistant needs current cross-venue funding rate spreads for delta-neutral carry or systematic funding arbitrage research across Hyperliquid, Binance, Bybit and OKX. Not intended for spot prices or DeFi yields.
Requirements
A remote MCP client pointed at the hosted endpoint; no API key or signup. Each call costs $0.002 in USDC on Base L2, so an x402-capable client with a funded wallet is needed to complete the 402 payment challenge.
Before you install
Every call is a paid micropayment in USDC on Base L2, so an agent can spend wallet funds without a separate confirmation step. The server holds no API key; payment is handled by the client's x402 wallet. Results are informational market data, not trading advice, and no orders are placed.

Installation

In SourceWeft

  1. Open Funding Rate Arbitrage Scanner API in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via SSE. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Br0ski777%2Ffunding-arb/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "funding-rate-arbitrage-scanner-api": {
      "type": "sse",
      "url": "https://funding-arb.api.klymax402.com/mcp"
    }
  }
}

README

Funding Rate Arbitrage Scanner API

[MCP Server] [x402] [License: MIT]

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.):

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

Quickstart -- HTTP (x402)

bash
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:

json
{"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

Source: README.md at commit 01e7cd6

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v1.1.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts