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API Guide > Technical Reference > API Versioning

Developer Forum - Ask the LiquidPlanner development team questions. Note that the LP iPhone app uses this same API.

API Sample Code – See the API in action then give it a try.


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LiquidPlanner uses a RESTful web service API. You can download the API Guide (PDF) for offline reference. Most actions that you can perform within the application can be automated using the API -- for example, you can create a task, comment on the task, track time against it, and then mark it done.

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You may use the request header X-API-Version to specify your expected API version. The currently supported versions are:

0.9.0
1.0.0

If the version header is omitted, then by default the most recent version of the API will be used to process your request. If this default version is not backwards-compatible with the (presumably older) version that you expect, then the request processing and response may be unexpected or erroneous.

If the version header is supplied and matches a supported version, then that version will be used to process the request.

If the version header is supplied and does not match a supported version, then the response will have status 501.

% curl -H "X-API-Version: 0.8.0" https://app.liquidplanner.com/api/account        
{
"message": "The version you requested is not implemented.",
"error": "NotImplemented",
"type": "Error"
}
Status: 501