Every Massive endpoint is read-only, so there is no order entry to find in the documentation and no account that could hold a position. Orders go to a broker; what Massive supplies is the prices, quotes and history that inform what you send them, and the two are separate businesses with separate regulators.
Applies to
- Plans: all plans. This is what the product is rather than what a tier includes.
- Endpoints: every endpoint is read-only. Nothing under api.massive.com accepts an order.
- Asset classes: stocks, options, indices, futures, forex and crypto.
How the two fit together
The two fit together as separate jobs, and a trading system usually has both:
| Job | Who does it |
|---|---|
| Real-time and historical prices, quotes, bars and reference data | Massive |
| Holding your money and your positions | Your broker |
| Accepting an order and routing it to a venue | Your broker |
| Reporting your fills and your account balance | Your broker |
| Deciding what to trade | Your code, from Massive's data |
Most brokers publish their own API for order entry, and many also publish market data. Where a broker's data is thinner than you need, or is limited to the instruments you hold with them, that is the usual reason to add a dedicated data provider alongside.
Why a data provider is separate from a broker
A data provider is separate from a broker because they are separately regulated and separately licensed. Executing orders means holding customer assets and being a member of the venues you route to, which is a different business with different obligations from redistributing exchange data. Keeping them apart also means your data does not change when you change broker, and your history does not disappear when an account closes.
If you see an error
There is no endpoint to call and therefore no error to look for. If you are searching the documentation for order entry, that is why you cannot find it.
{"status":"NOT_AUTHORIZED"} on a data endpoint is about your subscription, not about trading permissions. Massive has no concept of a trading permission.
