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joinQuantish

limitless-mcp

by joinQuantish

Limitless MCP Server

License: PolyForm Noncommercial Node.js Base Chain


⚠️ Notice: Quantish is winding down. The Quantish platform (quantish.live) is shutting down. This MCP server is self-hosted and will continue to work independently, but the Quantish team will no longer be maintaining or updating this project. If you're building in the prediction market space and need real-time data infrastructure, check out polynode.dev.


Features

  • Secure Wallet Management

    • Generate new Base wallets with encrypted private key storage

    • Bring Your Own Wallet (BYOW) - Import existing wallets with client-side encryption

    • Private keys are encrypted with AES-256-GCM before storage

  • Full Limitless Market Access

    • Real-time market discovery via Limitless Exchange API

    • Access to all prediction markets: Politics, Sports, Crypto, and more

    • Live orderbook data and price history

    • Semantic search for market discovery

  • Trading Operations

    • Place limit orders with EIP-712 signed authentication

    • Cancel orders (single, batch, or all)

    • Check and set token approvals (USDC, CTF)

    • Position tracking with P&L calculations

  • AI Agent Integration

    • Full MCP (Model Context Protocol) support

    • Works with Claude, Cursor IDE, and other MCP-compatible AI tools

    • 34 pre-built trading tools organized by category

  • Enterprise Security

    • AES-256-GCM encryption for all sensitive data

    • API key authentication with SHA-256 hashing

    • Platform partner system for B2B integrations

    • Rate limiting and request logging


Related MCP server: polymarket-mcp

Quick Start

1. Configure MCP (Cursor IDE)

Add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "limitless": {
      "url": "https://limitless-mcp-server-production.up.railway.app/mcp",
      "headers": {
        "x-api-key": "YOUR_API_KEY"
      }
    }
  }
}

2. Get Your API Key

Via MCP tool:

{
  "tool": "limitless_signup",
  "args": {
    "externalId": "your-unique-id"
  }
}

3. Start Trading

"Search for bitcoin prediction markets"
"Buy 10 YES shares at $0.60 on the BTC market"
"Show my current positions"
"Cancel my open orders"

Available MCP Tools (34 Total)

Note: All tool names are prefixed with limitless_ to avoid collisions with other MCPs.

Authentication & Setup (6 tools)

Tool

Description

limitless_signup

Create a new account with a fresh Base wallet

limitless_request_api_key

Get new API key (requires HMAC signature)

limitless_setup_wallet

Generate a new Base wallet

limitless_import_wallet

Import existing wallet (encrypted)

limitless_get_wallet_import_instructions

Instructions for secure wallet export

limitless_import_private_key

Direct private key import

Wallet Information (4 tools)

Tool

Description

limitless_get_wallet_info

Get wallet address and type

limitless_get_wallet_status

Full wallet status with balances

limitless_get_balances

Check ETH and USDC balances

limitless_get_deposit_address

Get address for funding

Market Discovery (6 tools)

Tool

Description

limitless_get_markets

List active markets with pagination

limitless_search_markets

Semantic search for markets

limitless_get_market

Get market details including venue

limitless_get_orderbook

Get order book with bids/asks

limitless_get_price_history

Historical price data

limitless_get_categories

List market categories

Trading (8 tools)

Tool

Description

limitless_place_order

Place a limit order

limitless_cancel_order

Cancel a single order

limitless_cancel_all_orders

Cancel all orders in a market

limitless_get_orders

List your orders

limitless_check_approvals

Check token approvals

limitless_set_approvals

Set token approvals

limitless_get_locked_balance

Get USDC locked in orders

limitless_get_quote

Estimate fill price

Positions (4 tools)

Tool

Description

limitless_get_positions

Get active positions with P&L

limitless_get_trades

Get trade history

limitless_get_portfolio_history

Full portfolio history

limitless_sync_positions

Sync positions from API

Transfers (3 tools)

Tool

Description

limitless_send_eth

Send ETH to another address

limitless_send_usdc

Send USDC to another address

limitless_export_private_key

Export wallet private key

API Key Management (3 tools)

Tool

Description

limitless_list_api_keys

List your API keys

limitless_create_api_key

Create a new API key

limitless_revoke_api_key

Revoke an API key


Self-Hosting

Prerequisites

  • Node.js 20+

  • PostgreSQL 15+

  • Base RPC access (mainnet.base.org)

Installation

# Clone the repository
git clone https://github.com/joinQuantish/limitless-mcp.git
cd limitless-mcp

# Install dependencies
npm install

# Copy environment template
cp .env.example .env

# Edit .env with your values (see Environment Variables below)

# Generate Prisma client
npx prisma generate

# Push database schema
npx prisma db push

# Build and start
npm run build
npm start

Environment Variables

Create a .env file with:

# Database (PostgreSQL)
DATABASE_URL="postgresql://user:password@host:5432/limitless_mcp?schema=public"

# Encryption (generate with: openssl rand -hex 32)
ENCRYPTION_KEY="your-64-character-hex-encryption-key-here"

# Blockchain - Base L2
BASE_RPC_URL="https://mainnet.base.org"

# Limitless Exchange API
LIMITLESS_API_URL="https://api.limitless.exchange"

# Server
PORT=3003
NODE_ENV=production

# Admin API Key (generate with: openssl rand -hex 32)
ADMIN_API_KEY="your-admin-api-key-here"

# Optional: Bot signing secret for returning user verification
BOT_SIGNING_SECRET=""

Docker Deployment

# Build the image
docker build -t limitless-mcp .

# Run the container
docker run -d \
  -p 3003:3003 \
  -e DATABASE_URL="postgresql://..." \
  -e ENCRYPTION_KEY="..." \
  -e ADMIN_API_KEY="..." \
  -e BASE_RPC_URL="https://mainnet.base.org" \
  -e LIMITLESS_API_URL="https://api.limitless.exchange" \
  -e NODE_ENV=production \
  limitless-mcp

Railway Deployment

# Install Railway CLI
npm install -g @railway/cli

# Login and initialize
railway login
railway init

# Add PostgreSQL via Railway dashboard

# Set environment variables
railway variables set DATABASE_URL="postgresql://..."
railway variables set ENCRYPTION_KEY="$(openssl rand -hex 32)"
railway variables set ADMIN_API_KEY="$(openssl rand -hex 32)"
railway variables set BASE_RPC_URL="https://mainnet.base.org"
railway variables set LIMITLESS_API_URL="https://api.limitless.exchange"
railway variables set NODE_ENV="production"

# Deploy
railway up

API Reference

Health Check

curl https://your-server/health

Response:

{
  "status": "healthy",
  "timestamp": "2026-01-17T12:00:00.000Z",
  "version": "1.0.0",
  "service": "limitless-mcp",
  "database": "connected",
  "environment": "production"
}

MCP Endpoint

# List available tools
curl -X POST https://your-server/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'

# Call a tool (authenticated)
curl -X POST https://your-server/mcp \
  -H "Content-Type: application/json" \
  -H "x-api-key: pk_limitless_..." \
  -d '{
    "jsonrpc":"2.0",
    "id":1,
    "method":"tools/call",
    "params":{
      "name":"limitless_get_balances",
      "arguments":{}
    }
  }'

Market Data API

# Get active markets
curl "https://your-server/api/markets?limit=10&page=1"

# Search markets
curl "https://your-server/api/markets/search?query=bitcoin&limit=5"

# Get market details
curl "https://your-server/api/markets/your-market-slug"

# Get orderbook
curl "https://your-server/api/markets/your-market-slug/orderbook"

Security Architecture

Encryption at Rest

All sensitive data is encrypted using AES-256-GCM:

  • Private keys encrypted before database storage

  • Session tokens encrypted with unique IVs

  • API secrets encrypted (only SHA-256 hash stored for lookup)

API Key Security

API Key Format: pk_limitless_<32 base64url chars>
API Secret Format: sk_limitless_<43 base64url chars>
  • Keys are hashed with SHA-256 before storage (never stored in plaintext)

  • Secrets are encrypted with AES-256-GCM

  • Timing-safe comparison using crypto.timingSafeEqual

Platform Isolation (B2B)

For platform partners:

  • Platform admin keys: plt_limitless_* / psk_limitless_*

  • All queries scoped by platformId at database level

  • Activity logging for audit trail

  • User limits enforced per platform

Rate Limiting

  • 60 requests/minute per API key (general)

  • 30 requests/minute for user listing (platform admin)

  • 5 requests/hour for platform registration


Secure Wallet Import (BYOW)

Import your existing MetaMask/hardware wallet securely:

Step 1: Export Your Private Key

In MetaMask: Settings > Security > Export Private Key

Step 2: Encrypt Locally

const crypto = require('crypto');

const privateKey = 'YOUR_PRIVATE_KEY_WITHOUT_0x_PREFIX';
const password = 'YourSecurePassword123!'; // min 12 chars

const salt = crypto.randomBytes(32);
const iv = crypto.randomBytes(16);
const derivedKey = crypto.scryptSync(password, salt, 32, { N: 16384, r: 8, p: 1 });

const cipher = crypto.createCipheriv('aes-256-gcm', derivedKey, iv);
let encrypted = cipher.update(privateKey, 'utf8', 'hex');
encrypted += cipher.final('hex');
const authTag = cipher.getAuthTag().toString('hex');

console.log({
  encryptedKey: `${encrypted}:${authTag}`,
  salt: salt.toString('hex'),
  iv: iv.toString('hex'),
  publicKey: 'YOUR_WALLET_ADDRESS'
});

Step 3: Import to SDK

{
  "tool": "limitless_import_wallet",
  "args": {
    "encryptedKey": "...",
    "salt": "...",
    "iv": "...",
    "publicKey": "0x...",
    "password": "YourSecurePassword123!"
  }
}

Security Note: Your raw private key NEVER leaves your machine. Only the encrypted bundle is sent to our servers, and we cannot decrypt it without your password.


Resource

URL

Limitless Exchange

https://limitless.exchange

Limitless API Docs

https://api.limitless.exchange/api-v1

Base Chain Explorer

https://basescan.org

Base USDC Contract

0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913


License

PolyForm Noncommercial 1.0.0 © Quantish


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