@pipeworx/polygon-io

Connect: https://gateway.pipeworx.io/polygon-io/mcp · Install: one-click buttons

Tools: 12

Massive (formerly Polygon.io) MCP — stock + options + crypto + forex data.

Polygon.io rebranded to Massive in 2026: polygon.io 301s site-wide to massive.com (site, docs, dashboard). The API host did not move — api.polygon.io still serves, and api.massive.com is the same API under the new name.

Free Basic plan: $0/mo, 5 API calls/minute, end-of-day data, 2 years of history (massive.com/pricing, checked 2026-08-21). Paid Stocks Starter is $29/mo.

Auth

• Platform: PLATFORM_POLYGON_KEY. BYO: ?_apiKey=….

Tools

• tickers(search?, type?, market?, exchange?, active?, limit?, sort?, order?) — ticker search
• ticker_details(ticker) — ticker reference detail
• aggregates(ticker, multiplier, timespan, from, to, adjusted?, sort?, limit?) — OHLC bars
• daily_open_close(ticker, date, adjusted?) — daily O/H/L/C + after-hours
• previous_close(ticker, adjusted?) — previous close
• grouped_daily(date, adjusted?) — all tickers OHLC for a day
• news(ticker?, published_utc?, order?, limit?, sort?) — Massive market news
• splits(ticker?, execution_date?, limit?) — splits
• dividends(ticker?, ex_dividend_date?, limit?) — dividends
• market_holidays() — upcoming market holidays
• market_status() — current market status
• exchanges(asset_class?, locale?) — exchanges

timespan: minute|hour|day|week|month|quarter|year.

Data sources

• API: https://api.polygon.io (legacy host, still live; https://api.massive.com is the same API)
• Docs: https://massive.com/docs
• Keys: https://massive.com/dashboard/keys

Tools

• tickers — Search Massive (formerly Polygon.io) reference universe for US stocks, options, indices, forex, and crypto tickers. Returns symbol, name, market, asset class, primary exchange, currency. Use to resolv
• ticker_details — Fetch full Massive (formerly Polygon.io) reference details for a single ticker: company name, description, SIC code, primary exchange, locale, market cap, phone, address, homepage URL, and logo.
• aggregates — Massive (formerly Polygon.io) OHLC price bars for a US stock ticker — 1 minute through quarterly granularity. Returns timestamped open/high/low/close + volume + VWAP. Use for charting equities, intrad
• daily_open_close — Fetch official open, high, low, close, volume, and after-hours/pre-market prices for a US stock ticker on a specific date (YYYY-MM-DD) from Massive (formerly Polygon.io).
• previous_close — Fetch the previous trading session’s open, high, low, close, and volume for a US stock ticker from Massive (formerly Polygon.io).
• grouped_daily — Fetch OHLCV bars for all US stocks on a given date (YYYY-MM-DD) from Massive (formerly Polygon.io) in a single call; useful for market-wide snapshot or screening.
• news — Massive (formerly Polygon.io) financial news: ticker-tagged US stock market headlines with publisher, article URL, image, summary, and per-ticker sentiment insights. Use for “what is the news on $TICK
• splits — Historical stock splits for a US-listed ticker, from Massive (formerly Polygon.io): split ratio, execution date, ticker. Use to adjust historical price comparisons across split events.
• dividends — Historical and upcoming cash + stock dividends for a US-listed ticker, from Massive (formerly Polygon.io): ex-date, record date, pay date, declaration date, cash amount, dividend type, frequency. Use
• market_holidays — Return the list of upcoming US stock market holidays from Massive (formerly Polygon.io), including date, holiday name, and exchange status (open/closed/early-close).
• market_status — Current market status.
• exchanges — Reference list of exchanges Massive (formerly Polygon.io) covers: US stock exchanges (NYSE, NASDAQ, etc.), options venues, crypto exchanges, and OTC tiers. Returns MIC code, name, asset class, type, l