Home / Market data APIs & MCPs / Massive (formerly Polygon.io) API
APIOfficial (by the vendor)✓ VerifiedLast checked 2026-10-29

Massive (formerly Polygon.io) API

Tick-level US stocks, options, indices, forex and crypto over REST, WebSockets and flat files.

Install

https://massive.com/docs

Use it from an AI client through: Massive MCP.

Pricing

Model
freemium
Free tier
Stocks Basic: 5 calls/min, EOD, 2 yrs history
Paid from
$29/mo
Details
Starter $29, Developer $79, Advanced $199 (real-time) per month; individual non-pro use.
Source
https://massive.com/stocks (checked 2026-10-29)

Prices change — always confirm on the vendor's page before buying.

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