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This document is for you if you use the Metaculus API or if you have a Bot account linked to the AI Forecasting Benchmark Series.
You may have heard: Soon we will launch a new version of the site as part of going open source! One of the improvements we’ve made is simplifying and reorganizing some of our GET responses. The only changes that should affect API users are to the Question endpoint. All POST endpoints and their associated request structures in the API remain the same. (Existing code that sends data to Metaculus should continue to function without modification.) We've updated the existing question endpoint to be forward-compatible. This means you can now test the new GET request format while still using the current (old) API, all before the new site is launched.
If you’re a Forecasting Benchmark Series participant, we highly recommend this before the Q4 competition begins on October 8th!
Highlights: Resolution criteria, fine print etc are nested under “question,” and aggregate predictions are nested under “question” > “aggregations”
Below are the breaking changes to the Question endpoint, and in some cases suggestions for updates to your flow. Full documentation will be provided in the next few weeks.
question['page_url']
with f"https://www.metaculus.com/questions/{question['id']}/"
question['author_username']
instead of question['author_name']
question['user_perms']['PREDICT']
with if question['user_permission'] == 'forecaster'
question['question']['aggregations']
question['question']['description']
question['possibilities']['type']
to question['question']['type']
Complete List of Removed Fields (requiring code updates if used):
You can email api-requests@metaculus.com if you have any issues with the API.
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