Retell AI API · Endpoint removal
override_dynamic_variables on PATCH /v2/update-call/{} stops working
Stopped working
Calls to PATCH /v2/update-call/{}, body parameter override_dynamic_variables on Retell AI API stopped working on August 31, 2026.
What to use instead of these calls
Send it to PATCH /v2/update-live-call/{call_id} under fields_to_override.override_dynamic_variables for an ongoing call; drop it for an ended call.
Calls it hits
PATCH /v2/update-call/{}body parameter override_dynamic_variables
3. The `override_dynamic_variables` input on Update Call will no longer be accepted.
Facts
- API
- Retell AI API
api.retellai.com - Kind
- Endpoint removal
- Takes effect
- August 31, 2026
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
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