Sardine MCP

An MCP server providing historical settlement rates for Kalshi crypto binary contracts (BTC, ETH, XRP) and sports markets. It allows agents to query settlement counts, live board data, rate tables, and run backtests on historical data, serving as a public record of what happened rather than forecasts.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Vendor evidenceLocal stdioSource reviewed; not executedOperated by Sardine

You need:REST, free with signup (25 calls a day to try without a key; a free key at https://sardine.info/signup raises it to 10,000)

Vendor documentation

What you can do with it

Query historical settlement rates for specific crypto contracts
Retrieve live board data for open Kalshi contracts
Run backtests on historical market data
Access published calibration records and datasets

Source and maintenance

Vendor evidenceRegistry 0.1.1

mcp-registry: info.sardine/sardine@0.1.1 Project website

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

sardine-mcp 0.1.1

pypi

sardine-mcp package definition

{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "sardine-mcp",
  "registryType": "pypi",
  "environmentVariables": [
    {
      "name": "SARDINE_API_KEY",
      "description": "Optional free key from https://sardine.info/signup (raises limits)"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "sardine-mcp": {
      "command": "uvx",
      "args": [
        "sardine-mcp==0.1.1"
      ],
      "env": {
        "SARDINE_API_KEY": "<YOUR_SARDINE_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "sardine-mcp": {
      "command": "uvx",
      "args": [
        "sardine-mcp==0.1.1"
      ],
      "env": {
        "SARDINE_API_KEY": "<YOUR_SARDINE_API_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "sardine-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "sardine-mcp==0.1.1"
      ],
      "env": {
        "SARDINE_API_KEY": "<YOUR_SARDINE_API_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "sardine-mcp": {
      "command": "uvx",
      "args": [
        "sardine-mcp==0.1.1"
      ],
      "env": {
        "SARDINE_API_KEY": "<YOUR_SARDINE_API_KEY>"
      }
    }
  }
}

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