Koskamo

Oracle3 MCP

Oracle3 is an open-source MCP server and trading engine for prediction markets. It allows AI agents to discover markets on Kalshi and Polymarket, analyze arbitrage opportunities with fee-aware calculations, and execute paper trades. It provides 13 MCP tools and 6 agent skills for market research, strategy development, and risk management without requiring exchange credentials for public data reads.

Package and access

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

Oracle3 MCP logo, by Yicheng YangCommunity listingLocal stdioSource reviewed; not executedPublished by Yicheng Yang
Vendor documentation

What you can do with it

  • Discover Kalshi and Polymarket contracts about specific events
  • Compare outcome definitions, resolution rules, and order-book quotes
  • Analyze fee-adjusted no-arbitrage violations across related contracts
  • Execute paper trades and track simulated positions via MCP

Source and maintenance

Community listingRegistry 1.2.2
mcp-registry: io.github.YichengYang-Ethan/oracle3@1.2.2Source repositoryProject website
Maintenance checked

Packages and installation

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

oracle3 1.2.2

pypiuvx
oracle3 package definition
{
  "version": "1.2.2",
  "transport": "stdio",
  "identifier": "oracle3",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "packageArguments": [
    {
      "type": "positional",
      "value": "mcp"
    }
  ],
  "environmentVariables": [
    {
      "name": "ORACLE3_MCP_LEDGER",
      "format": "filepath",
      "description": "Path of the local paper-trading ledger (default ~/.oracle3/mcp_paper_ledger.json)"
    }
  ]
}

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": {
    "oracle3-mcp": {
      "command": "uvx",
      "args": [
        "oracle3==1.2.2",
        "mcp"
      ],
      "env": {
        "ORACLE3_MCP_LEDGER": "<YOUR_ORACLE3_MCP_LEDGER>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "oracle3-mcp": {
      "command": "uvx",
      "args": [
        "oracle3==1.2.2",
        "mcp"
      ],
      "env": {
        "ORACLE3_MCP_LEDGER": "<YOUR_ORACLE3_MCP_LEDGER>"
      }
    }
  }
}

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": {
    "oracle3-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "oracle3==1.2.2",
        "mcp"
      ],
      "env": {
        "ORACLE3_MCP_LEDGER": "<YOUR_ORACLE3_MCP_LEDGER>"
      }
    }
  }
}

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": {
    "oracle3-mcp": {
      "command": "uvx",
      "args": [
        "oracle3==1.2.2",
        "mcp"
      ],
      "env": {
        "ORACLE3_MCP_LEDGER": "<YOUR_ORACLE3_MCP_LEDGER>"
      }
    }
  }
}

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