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docs/articles/hubs/variables.md
Robert Wallach b111e757f4 Create Hubs Variables.md (#173)
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* Add link to Security Schemes doc

* Update variables.md

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* Update variables.md
2018-04-03 11:04:41 -05:00

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# Variables in Hubs
## What
Inputting variables in API documentation whenever you consume them can quickly become a tedious time sink. The same pain point applies to people consuming your documentation. Inputting an API key everytime you want to send HTTP Requests to test endpoints is time better spent elsewhere. Stoplight removes this obstacle by storing variables in your local browser. Once you input a variable, it populates the rest of your docs, no duplication, no problems.
## How
You can specify variables in your docs by adding them at the specification level or directly into Hubs.
### Modeling Method
![Security Scheme in Specification](https://github.com/stoplightio/docs/blob/develop/assets/images/hubs-variables-modeling.png?raw=true)
1. Select the modeling file you wish to modify
2. Create a new **security scheme**
1. Input a **key** (required, must be unique in this specification)
2. Select a **type** of security scheme
3. Select a location for the security scheme under **in**
4. Input a **name**
3. Reference the specification in your Hub
---
### Hubs Method
![Adding variables to HTTP Request Maker](https://github.com/stoplightio/docs/blob/develop/assets/images/hubs-variables-tryitout.png?raw=true)
1. Select the Hub you wish to modify
2. Create a **HTTP Request Maker** block
3. Select the **Headers** tab
4. Click **Add Header**
5. Input a **header name**
6. Input a **header value**
***
**Related**
* [Security Schemes Overview](/modeling/modeling-with-openapi/security-schemes)