Reins MCP Server

io.github.R2Rlabs/hyperliquid-reins

Repository Registry

What is the Reins MCP server?

Risk limits and an audit log for AI agents trading Hyperliquid, enforced outside the model.

How to install Reins

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

REINS_SYMBOLS
required
Markets the agent may trade, comma separated, e.g. BTC,ETH. Every other market is refused.
REINS_MAX_POSITION_USD
required
Largest position per market, in USD.
REINS_DAILY_LOSS_USD
required
Realised loss in a UTC day after which new risk is refused.
REINS_MAX_LEVERAGE
Largest total exposure as a multiple of account value.
REINS_MODE
paper (live prices, simulated fills, nothing signed) or live.
REINS_NETWORK
Hyperliquid network for prices and, in live mode, orders. Mainnet spends real money.
REINS_REQUIRE_STOP_LOSS
true to refuse any order that adds risk without a stop-loss.
REINS_LOG_FILE
Decision log, one JSON line per action with the agent's stated reason. In memory if unset.
REINS_PAPER_FILE
Where the paper account is kept between runs. In memory if unset.
REINS_ACCOUNT_ADDRESS
Live mode: the Hyperliquid account traded. Approve Reins' 2 bp builder fee from it first: npx @r2rlabs/reins approve-builder
REINS_PRIVATE_KEY
secret
Live mode: an API wallet's key, which can trade but not withdraw. Never the account's own key.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "hyperliquid-reins": {
      "command": "npx",
      "args": [
        "-y",
        "@r2rlabs/reins"
      ],
      "env": {
        "REINS_SYMBOLS": "<YOUR_REINS_SYMBOLS>",
        "REINS_MAX_POSITION_USD": "<YOUR_REINS_MAX_POSITION_USD>",
        "REINS_DAILY_LOSS_USD": "<YOUR_REINS_DAILY_LOSS_USD>",
        "REINS_MAX_LEVERAGE": "<YOUR_REINS_MAX_LEVERAGE>",
        "REINS_MODE": "<YOUR_REINS_MODE>",
        "REINS_NETWORK": "<YOUR_REINS_NETWORK>",
        "REINS_REQUIRE_STOP_LOSS": "<YOUR_REINS_REQUIRE_STOP_LOSS>",
        "REINS_LOG_FILE": "<YOUR_REINS_LOG_FILE>",
        "REINS_PAPER_FILE": "<YOUR_REINS_PAPER_FILE>",
        "REINS_ACCOUNT_ADDRESS": "<YOUR_REINS_ACCOUNT_ADDRESS>",
        "REINS_PRIVATE_KEY": "<YOUR_REINS_PRIVATE_KEY>"
      }
    }
  }
}

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