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GET
Preview a structure change

Authorizations

Authorization
string
header
required

Authenticate every request with a Bearer token. Pass your Reply API key in the Authorization header:

Get your API key from the Reply dashboard: Settings → API Key.

Path Parameters

sequence_id
integer
required

Sequence id

Required range: x >= 1

Query Parameters

structure_id
string
required

Id of the structure to preview: g-{number} for library structures, c-{number} for structures saved by users (e.g. g-3, c-128).

Minimum string length: 1

Response

Structure change preview

What applying a sequence structure to an AI SDR sequence changes

isMigrationEnabled
boolean

true when structure changes after sending are enabled for your account, so the structure of a sequence with used steps can be changed.

hasUsedSteps
boolean

true once any step of the sequence has been used: a contact has passed it, it has created a task, or a message from it is waiting to be sent.

stepsToArchive
Sequence structure change — current step · object[]

Current steps that are archived: the used steps and the steps leading to them. Archived steps stay in the sequence's history. Ordered by step number.

stepsToDelete
Sequence structure change — current step · object[]

Current steps that are removed because no contact has used them. Ordered by step number.

stepsToAdd
Sequence structure change — new step · object[]

Steps of the new structure, in the structure's order

contacts
Sequence structure change — contacts · object

Contacts and pending work of the sequence that a structure change affects

snapshotName
string

Name the current steps are saved under when the structure is set with saveCurrentStructure

Example:

"Acme outbound – before 2026-11-05"