Use this when you need Hyperliquid perpetual futures data for a specific coin. Returns full L2 order book depth with real-time pricing and funding metrics in one call. 1. bids: array of bid levels with price and size 2. asks: array of ask levels with price and size 3. midPrice: current mid price ...
Part of the Hyperliquid Perp Market Data API server.
Free to start. No card required.
AI agents call hyperliquid_get_market_data to retrieve information from Hyperliquid Perp Market Data 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_get_market_data 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_get_market_data": {}
}
}See the full Hyperliquid Perp Market Data API policy for all 3 tools.
These attack patterns abuse exactly the kind of access hyperliquid_get_market_data 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 Hyperliquid perpetual futures data for a specific coin. Returns full L2 order book depth with real-time pricing and funding metrics in one call. 1. bids: array of bid levels with price and size 2. asks: array of ask levels with price and size 3. midPrice: current mid price between best bid/ask 4. markPrice: oracle mark price used for liquidations 5. fundingRate: current hourly funding rate (e.g. 0.0001 = 0.01%) 6. openInterest: total open interest in USD 7. volume24h: 24-hour trading volume in USD Example output: {"midPrice":67450.5,"markPrice":67448.2,"fundingRate":0.00008,"openInterest":1250000000,"volume24h":3400000000,"bids":[{"price":67450,"size":12.5}],"asks":[{"price":67451,"size":8.3}]} Use this BEFORE placing trades on Hyperliquid. Essential for checking spread, depth, and funding before entering a position. Do NOT use for EVM gas -- use gas_get_current_price. Do NOT use for spot DEX quotes -- use dex_get_swap_quote. Do NOT use for whale positions -- use hyperliquid_track_whale_positions.. It is categorised as a Read tool in the Hyperliquid Perp Market Data API MCP Server, which means it retrieves data without modifying state.
Register the Hyperliquid Perp Market Data API MCP server in PolicyLayer and add a rule for hyperliquid_get_market_data: 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 Perp Market Data API. Nothing to install.
hyperliquid_get_market_data 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_get_market_data 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_get_market_data. 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_get_market_data is provided by the Hyperliquid Perp Market Data API MCP server (https://hyperliquid-data.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 Perp Market Data API tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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