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See UPDATE #2 Below announcing that the client libraries will no longer be distributed effective IMMEDIATELY.


Dear PI Developer's Club Users:


OSIsoft LLC is currently revising and consolidating its GitHub presence and content-sharing policies. This change in policy has caused many links to suddenly become broken for the time being.  We are working diligently to resolve as many of these as we can once we have clarified our new code-sharing approach.


We apologize for the inconvenience of such broken links, and equally important, the unavailability of our learning samples that many customers and partners have found to be valuable.  Until we have transitioned to our new policies, such links and repositories will remain unavailable.


This announcement supersedes any previous policy stated at:






Thank you for your patience and understanding.


Michael Sloves, Director of Technology Enablement



UPDATE #1 - November 13, 2018


Regarding the PI Web API client libraries previously available on GitHub, we will allow access to the source code, provided you first agree and accept some terms and conditions.  Any request to the client libraries may be made to


Rick Davin, Team Lead Technology Enablement


UPDATE #2 - May 30, 2019


For the past 7 months we have privately sent links to these libraries to customers who agreed to some terms and conditions.  Effective with today's announcement of a new release of PI Web API (2018 SP1), and coupled with today's other announcement of changes to PI Web API Learning materials, we will NO LONGER BE DISTRIBUTING THESE LIBRARIES EFFECTIVE IMMEDIATELY.  These client libraries were never an official product, nor were they ever supported.  With the PI Web API 2018 SP1, these libraries aren't just unsupported but they are now outdated as well.


From the aforementioned blog about PI Web API learning materials, going forward this is the official offering of samples distributed by and approved by OSIsoft Engineering:


  1. New code samples on Github
  2. New private online course for PI Web API developers - available on PI Square in mid-June 2019


Rick Davin, Team Lead Technology Enablement

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