Kalshi API · Endpoint removal
PUT /trade-api/v2/multivariate_event_collections/{}/lookup stops working
Stopped working
On August 6, 2026, the endpoint PUT /trade-api/v2/multivariate_event_collections/{}/lookup was removed. Calls to this endpoint now fail because the route no longer exists. Any integrations relying on this lookup method to interact with multivariate event collections are affected.
What to use instead of these calls
Use POST /trade-api/v2/multivariate_event_collections/{collection_ticker} to create or resolve a combo market instead. Alternatively, use the communications (RFQ) APIs for quoting.
Calls it hits
PUT /trade-api/v2/multivariate_event_collections/{}/lookup
PUT /trade-api/v2/multivariate_event_collections/{collection_ticker}/lookup no longer exists.
Facts
- API
- Kalshi API
api.elections.kalshi.com - Kind
- Endpoint removal
- Announced
- August 6, 2026
- Takes effect
- August 6, 2026
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
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