At a glance
- Availability: Experimental (how to enable).
- Auth: API key.
- Connection: The key from
POLYGON_API_KEYis sent as theBearerprefixedAuthorizationheader. - Docs: https://massive.com/docs/rest/quickstart
Credentials
Set these per environment. See Connect an integration.| Variable | Required | Description |
|---|---|---|
POLYGON_API_KEY | Yes | API key from the Massive (formerly Polygon.io) dashboard, sent as an Authorization: Bearer header Docs. |
Setup
- Create an account: Sign up at https://massive.com (Polygon.io is now Massive). The free Basic plan works for testing: it includes end-of-day stock data, 2 years of history, and 5 API calls per minute.
- Copy your API key: Open https://massive.com/dashboard/keys and copy the API key shown for your account. Existing Polygon.io keys keep working.
- Store the key: Set the key as POLYGON_API_KEY. It is sent as an Authorization: Bearer header on every request.
- Verify access: Call the Get Previous Close tool with a ticker like AAPL. A 401 means the key is invalid; a 429 means you hit the 5 requests/minute limit on the free plan.
- Polygon.io was renamed to Massive in October 2025; api.polygon.io and api.massive.com run in parallel and accept the same keys, so this connector’s api.polygon.io endpoints continue to work.
- All five tools are available on the free Basic plan; data recency depends on your plan (end-of-day on Basic, 15-minute delayed on Starter/Developer, real-time on Advanced).
- The free Basic plan is limited to 5 API calls per minute; exceeding it returns HTTP 429.
Tools
| Tool | Access | Description |
|---|---|---|
| Get Aggregate Bars | Read | Get OHLCV aggregate bars (candles) for a stock ticker over a custom date range and time window |
| Get Previous Close | Read | Get the previous trading day’s open, high, low, close, and volume for a stock ticker |
| Get Daily Open/Close | Read | Get the open, close, high, low, volume, and pre-market/after-hours prices for a stock ticker on a specific date |
| Search Tickers | Read | Search and list ticker symbols across stocks, indices, forex, and crypto reference data |
| Get Ticker Details | Read | Get reference details for a single ticker: company name, market, exchange, market cap, description, and identifiers |
| Get Market Status | Read | Get the current trading status of US exchanges and market-wide sessions (open, closed, early hours, after hours) - a cheap check before quoting prices |
| Get Ticker News | Read | Get recent news articles for a ticker, including publisher, summary, and per-ticker sentiment insights |
Example prompts
- Get daily price bars for a ticker I provide over the last month using Polygon.io and summarize the trend.
- Look up the previous trading day’s open, high, low, and close for a ticker I provide.
- Search Polygon.io reference data for a company name I provide and show the matching ticker symbols with their exchanges.