Massive (formerly Polygon.io) — Data Feed Skill#

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

MethodBest ForREST APIOn-demand quotes, OHLCV bars, historical recordsWebSocketReal-time streaming — live trades, quotes, minute barsFlat FilesBulk 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#

TaskReadStocks — quotes, trades, OHLCV, fundamentalsreferences/stocks.mdOptions — chains, Greeks, trades, quotesreferences/options.mdFutures — prices, historical barsreferences/futures.mdCrypto — prices, trades, OHLCVreferences/crypto.mdReal-time streamingreferences/websocket.mdBulk historical CSV downloadsreferences/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