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Loops · Endpoint removal

GET /api/v1/contacts/customFields is deprecated

Deprecated, no date

Loops deprecated GET /api/v1/contacts/customFields without giving a shutdown date yet.

What to use instead of these calls

Use List contact properties (GET /api/v1/contacts/properties).

Calls it hits

GET /api/v1/contacts/customFields

Facts

API: Loops app.loops.so
Kind: Endpoint removal
Announced: January 14, 2025
Takes effect: No date given yet
Calls after that day: Fail
Source: Announcement
Last updated: October 17, 2026

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GET /api/v1/transactional is deprecated Deprecated, no date

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