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Deprecated, no dateSubscribe to OpenCorporates APIShare

OpenCorporates has deprecated the created_before query parameter on GET /v0.4/companies/search calls without a shutdown date. The parameter was used to restrict results to companies added to the platform before a given date. Requests that continue using this parameter will eventually fail once it is fully removed.

Calls it hits

GET /v0.4/companies/search
query parameter created_before

What to use instead of these calls

Use the created_at date filter instead, setting created_at=:YYYY-MM-DD to filter for companies created before the specified date.

In OpenCorporates API's words

Deprecated Restrict to companies added to OpenCorporates before the given date

OpenCorporates API, Announcement

Facts

API: OpenCorporates API api.opencorporates.com
Kind: Parameter removal
Takes effect: No date given yet
Calls after that day: Fail
Source: Announcement
Last updated: October 25, 2026
Verified: November 6, 2026, against OpenCorporates API's own pages

Questions

When does this change take effect?

OpenCorporates API deprecated GET /v0.4/companies/search, query parameter created_before without giving a shutdown date yet.

Do these calls still work?

Yes, they still work: OpenCorporates API has not given a shutdown date yet.

How do I find the calls this hits in my code?

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