Run Crypto Agents Locally with Ollama + Purple Flea

import json
import requests
from ollama import Client

OLLAMA_HOST = "http://localhost:11434"
PURPLE_FLEA_KEY = "YOUR_API_KEY"
PF_BASE = "https://purpleflea.com/api"
MODEL = "purpleflea-agent"

client = Client(host=OLLAMA_HOST)
session = requests.Session()
session.headers.update({"Authorization": f"Bearer {PURPLE_FLEA_KEY}"})

# Tool definitions — tell Ollama what functions the agent can call
TOOLS = [
  {
    "type": "function",
    "function": {
      "name": "get_wallet_balance",
      "description": "Get current balances for all wallets",
      "parameters": {"type": "object", "properties": {}}
    }
  },
  {
    "type": "function",
    "function": {
      "name": "get_market_price",
      "description": "Get current price for a trading pair",
      "parameters": {
        "type": "object",
        "properties": {
          "symbol": {"type": "string", "description": "e.g. BTC-USD"}
        },
        "required": ["symbol"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "place_trade",
      "description": "Place a buy or sell order",
      "parameters": {
        "type": "object",
        "properties": {
          "symbol": {"type": "string"},
          "side": {"type": "string", "enum": ["buy", "sell"]},
          "amount_usd": {"type": "number"}
        },
        "required": ["symbol", "side", "amount_usd"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "casino_bet",
      "description": "Place a casino bet (crash or coin-flip)",
      "parameters": {
        "type": "object",
        "properties": {
          "game": {"type": "string", "enum": ["crash", "coinflip"]},
          "amount_usdc": {"type": "number"},
          "cashout_multiplier": {"type": "number"}
        },
        "required": ["game", "amount_usdc"]
      }
    }
  }
]

def execute_tool(name, args):
    """Execute a Purple Flea API call based on tool name."""
    if name == "get_wallet_balance":
        r = session.get(f"{PF_BASE}/wallet/balance")
        return r.json()
    elif name == "get_market_price":
        r = session.get(f"{PF_BASE}/trading/price/{args['symbol']}")
        return r.json()
    elif name == "place_trade":
        r = session.post(f"{PF_BASE}/trading/order", json=args)
        return r.json()
    elif name == "casino_bet":
        r = session.post(f"{PF_BASE}/casino/bet", json=args)
        return r.json()

def run_agent(goal: str):
    """Main agent loop: reason → act → observe → repeat."""
    messages = [{"role": "user", "content": goal}]
    print(f"Agent starting: {goal}\n")

    for step in range(10):  # max 10 reasoning steps
        response = client.chat(
            model=MODEL,
            messages=messages,
            tools=TOOLS
        )
        msg = response.message
        messages.append({"role": "assistant", "content": msg.content or ""})

        # If no tool calls, agent is done
        if not msg.tool_calls:
            print(f"Agent response: {msg.content}")
            break

        # Execute each tool call and feed results back
        for call in msg.tool_calls:
            fn = call.function
            print(f"  → Calling {fn.name}({fn.arguments})")
            result = execute_tool(fn.name, fn.arguments)
            print(f"  ← Result: {json.dumps(result)[:200]}")
            messages.append({
                "role": "tool",
                "content": json.dumps(result)
            })

if __name__ == "__main__":
    run_agent(
        "Check my wallet balance, look up BTC-USD price, "
        "and if I have more than $100 USDC place a $10 BTC buy order."
    )

{
  "mcpServers": {
    "purpleflea": {
      "url": "https://purpleflea.com/mcp",
      "transport": "streamable-http",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  },
  "ollama": {
    "host": "http://localhost:11434",
    "model": "purpleflea-agent"
  }
}

# Install mcphost to bridge Ollama + MCP
go install github.com/mark3labs/mcphost@latest

# Run with Purple Flea MCP config
mcphost --config mcp-config.json \
  --model ollama:purpleflea-agent \
  --prompt "Monitor BTC price every 5 minutes and alert me if it moves 2%"