Use this when you need to find funding rate arbitrage opportunities on Hyperliquid. Scans all 229 perp markets and returns coins where the absolute funding rate exceeds 0.01% per 8h period (annualized > 36%), flagged as long or short opportunities based on rate direction. Data returned for each o...
Part of the Hyperliquid Funding Rates API server.
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AI agents call hyperliquid_find_funding_arb to retrieve information from Hyperliquid Funding Rates API without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though hyperliquid_find_funding_arb only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"hyperliquid_find_funding_arb": {}
}
}See the full Hyperliquid Funding Rates API policy for all 3 tools.
These attack patterns abuse exactly the kind of access hyperliquid_find_funding_arb gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Use this when you need to find funding rate arbitrage opportunities on Hyperliquid. Scans all 229 perp markets and returns coins where the absolute funding rate exceeds 0.01% per 8h period (annualized > 36%), flagged as long or short opportunities based on rate direction. Data returned for each opportunity: 1. coin: ticker symbol with extreme funding 2. fundingRate: current 8-hour rate as decimal 3. annualizedRate: annualized percentage (rate * 3 * 365) 4. direction: "long opportunity" (negative rate = longs get paid) or "short opportunity" (positive rate = shorts get paid) 5. openInterest: total OI in USD (liquidity indicator) 6. markPrice: current mark price in USD 7. premium: mark-oracle price premium Example output: { threshold: 0.0001, totalOpportunities: 12, longOpportunities: 5, shortOpportunities: 7, opportunities: [{ coin: "PEPE", fundingRate: 0.0005, annualizedRate: 54.75, direction: "short opportunity", openInterest: 85000000, markPrice: 0.0000125, premium: 0.001 }, ...] } Use this to identify carry trade setups where you earn funding by taking the opposite side of a crowded trade. Combine with spot hedging for delta-neutral strategies. Do NOT use for historical funding trends -- use hyperliquid_get_funding_history instead. Do NOT use for DEX swap quotes -- use dex_get_swap_quote instead. Do NOT use for DeFi yield farming -- use defi_find_best_yields instead.. It is categorised as a Read tool in the Hyperliquid Funding Rates API MCP Server, which means it retrieves data without modifying state.
Register the Hyperliquid Funding Rates API MCP server in PolicyLayer and add a rule for hyperliquid_find_funding_arb: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hyperliquid Funding Rates API. Nothing to install.
hyperliquid_find_funding_arb is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the hyperliquid_find_funding_arb rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for hyperliquid_find_funding_arb. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
hyperliquid_find_funding_arb is provided by the Hyperliquid Funding Rates API MCP server (https://hl-funding.api.klymax402.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 3 Hyperliquid Funding Rates API tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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