Market data · Official API

Massive MCP (Polygon.io)

Official market-data server: stock, options, forex, and crypto aggregates, trades, quotes, snapshots, fundamentals, and market status. Free tier is delayed data.

LicenseMIT

MaintenanceActive

Transportstdio

CreatorMassive (formerly Polygon.io)

VerificationSource verified

Checked2026-07-30

AuthenticationMassive API key

Last source update2026-05-05

Matches gapsDiscovery · Valuation · Monitoring

CompanyNumeric dataEquitiesOptionsOfficial

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Where it fits: research stage Company, capability type Numeric data. Listings are not endorsements; verify code, licenses, vendor terms, and data rights before use.

Verification record

Source verified

Official repository, Python requirements, and stdio configuration were inspected.

Source revision: c58ec7e4df7482c53fc4adeb2de0e979f77f3a23

Raw audit evidence: Reproducible commands and responses (2026-07-30) · Full sweep summary

Known limitations

Credential-gated data calls were not run.
Free-tier market data may be delayed.

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