Massive(polygon.io) Stock Data Feed

Fetch real-time and historical market data from Massive (formerly Polygon.io) for use in OpenClaw's trading decisions. Use this skill whenever OpenClaw needs stock quotes, options chains, futures prices, crypto prices, OHLCV bars, trades, or any other market data. Triggers on any request for price data, market data, historical bars, real-time streaming, or backtesting data across stocks, options, futures, indices, forex, and crypto.

Massive (formerly Polygon.io) — Data Feed Skill

Market data for OpenClaw. Does not execute trades — pair with snaptrade-trading for execution.

Method	Best For
REST API	On-demand quotes, OHLCV bars, historical records
WebSocket	Real-time streaming — live trades, quotes, minute bars
Flat Files	Bulk historical CSVs — backtesting, ML datasets

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Setup

bash

bash scripts/setup.sh
source .venv-massive/bin/activate

API keys: https://massive.com/dashboard/keys

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SDK Initialization

python

import os
from massive import Client

client = Client(api_key=os.environ["MASSIVE_API_KEY"])

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Raw HTTP (alternative)

python

import requests

API_KEY = os.environ["MASSIVE_API_KEY"]
BASE_URL = "https://api.massive.com/v1"

resp = requests.get(f"{BASE_URL}/stocks/trades",
    params={"apiKey": API_KEY, "ticker": "AAPL"})

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Reference Files

Task	Read
Stocks — quotes, trades, OHLCV, fundamentals	references/stocks.md
Options — chains, Greeks, trades, quotes	references/options.md
Futures — prices, historical bars	references/futures.md
Crypto — prices, trades, OHLCV	references/crypto.md
Real-time streaming	references/websocket.md
Bulk historical CSV downloads	references/flat-files.md

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Response Format

json

{ "status": "OK", "count": 10, "results": [ ... ] }

Always check status == "OK" before using results.

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Constraints

• Free plan: 15-min delayed data, 5 REST requests/min
• Real-time data requires a paid plan
• WebSocket: one connection per asset class by default
• Flat Files available ~11:00 AM ET the following trading day