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Overview

openprocurement.auctions.appraisal describes the process of insider auction.

The procurementMethodType (type of the procedure) is appraisal.insider.

Features

  • Auction consists of 3 stages: Dutch auction, sealed bid and best bid parts.
  • The only date Organizer has to provide is a preferable day for the auction (auctionPeriod.startDate), the rest will be calculated automatically.
  • Bidders can enter the auction till the end of the Dutch part (tenderPeriod.endDate = auctionPeriod.startDate + Dutch part duration).
  • Bids with the value mentioned will be rejected.
  • Auction.value is gradually decreasing per 1% during the Dutch part.
  • Bidders can't delete their bids within the first part of the auction.
  • The maximum (and default) number of steps within the Dutch part is 99.
  • In case of no bid has been made within Dutch auction, the whole procedure will be marked as unsuccessful.

Conventions

API accepts JSON or form-encoded content in requests. It returns JSON content in all of its responses, including errors. Only the UTF-8 character encoding is supported for both requests and responses.

All API POST and PUT requests expect a top-level object with a single element in it named data. Successful responses will mirror this format. The data element should itself be an object, containing the parameters for the request. In the case of creating a new auction, these are the fields we want to set on the auction itself.

If the request was successful, we will get a response code of 201 indicating the object was created. That response will have a data field at its top level, which will contain complete information on the new auction, including its ID.

If something went wrong during the request, we'll get a different status code and the JSON returned will have an errors field at the top level containing a list of problems. We look at the first one and print out its message.

Project status

The project has pre alpha status.

The source repository for this project is on GitHub: https://github.com/openprocurement/openprocurement.auctions.appraisal.

Documentation of related packages

API stability

API is relatively stable. The changes in the API are communicated via Open Procurement API maillist.

Next steps

You might find it helpful to look at the :ref:`tutorial`.

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