Massive (formerly Polygon.io) API
massive.com
Verification pendingResearched, not yet routed
Market data APIs for stocks, options and partner datasets; Stocks Basic free at 5 calls/minute. Buying direct: Stocks Basic $0; Starter $29/mo. Listed .
- Capabilities
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- From
- n/a
- Calls, 30 days
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Overview
Researched from the vendor's own pages; every fact links to its source and the day we checked it.
Massive (polygon.io/docs now resolves to massive.com) sells market data APIs by asset class with individual and business plans, plus partner datasets priced per dataset. Stocks Basic is free at 5 API calls per minute.
Company
Verified- Legal name
- Not confirmed
- Headquarters
- Not confirmed
- Founded
- Not confirmed
- Employees
- Not confirmed
- Ownership
- Not confirmed
- Status
- active
- Kind
- Data provider
- Website
- massive.com
API
Verified- Access
- Self-serve API
- Style
- REST
- Auth
- Not confirmed
- Base URL
- Not confirmed
- Features
- Bulk —Async —Webhooks —MCP —Sandbox —
- Rate limit
- Stocks Basic: 5 API calls/minute
- Docs
- Reference
Pricing
Verified- Model
- subscription
- List prices
- Stocks Basic $0 /month, 5 API calls / minute
- Stocks Starter $29 /month, Individual use
- Partner dataset $99 /month per dataset
- Currency
- USD
- Free tier
- Stocks Basic: 5 API calls / minute
- Checked
- Sep 29, 2026
Compliance
- SOC 2
- Not confirmed
- GDPR
- Not confirmed
- CCPA
- Not confirmed
- DPA
- Not confirmed
- Resale / storage
- Unknown until a written agreement says otherwise
Relationships
- Integrations
- Not confirmed
- Alternatives
- None named by the vendor
Sources (2)
- Massive pricingchecked Sep 29, 2026
- Massive docschecked Sep 29, 2026
Placement in the Grid
Where this vendor sits on the GridRouter Grid in each category it serves. No vendor pays for placement.
| Category | Placement | Execute | Coverage | Calls | Report |
|---|---|---|---|---|---|
| Funding & Financials | Not yet rated | – | – | 0 | View Grid |
API
The vendor's OpenAPI document as stored in the catalog, its operations, and the rate limits it publishes.
No spec
Rate limits
| Limit | Scope | Plan | Endpoint | Burst / concurrency |
|---|---|---|---|---|
| 5 / minute | plan | Stocks Basic | All | — / — |
GridRouter never paces above these and backs off on 429, honoring Retry-After. Source, checked Sep 29, 2026