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PATCH
/
v1
/
sms
/
campaigns
/
{campaign_id}
Update SMS campaign
curl --request PATCH \
  --url https://api.nixflex.com/v1/sms/campaigns/{campaign_id}

Documentation Index

Fetch the complete documentation index at: https://docs.nixflex.com/llms.txt

Use this file to discover all available pages before exploring further.

Updates a campaign. Only campaigns with status: scheduled can be edited — once running or completed, most fields are locked.

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Request

curl -X PATCH https://api.nixflex.com/v1/sms/campaigns/smsc_a1b2c3d4 \
  -H "Authorization: Bearer KEY_ID:KEY_SECRET" \
  -H "Content-Type: application/json" \
  -d '{
    "body": "Updated message text",
    "scheduled_at": "2026-05-20T09:00:00Z"
  }'

​
Editable fields (when scheduled)

  • name
  • body
  • recipients (replaces full list)
  • context_prompt
  • scheduled_at
  • reply_window_hours

​
Editable fields (when running or completed)

Only context_prompt can be updated after the campaign launches — useful if you realise replies need different guidance.

​
Response

200 OK — returns the updated campaign object.

​
Errors

CodeCause
campaign_not_foundID doesn’t exist or isn’t yours
campaign_not_editableTrying to edit a locked field on a running/completed campaign