---
title: "List call flow versions"
method: GET
path: "/api/fabric/resources/call_flow/{id}/versions"
tags: ["Call Flows"]
---

# List call flow versions

`GET /api/fabric/resources/call_flow/{id}/versions`

Lists the saved revisions of one Call Flow. Use it to review the visual resource's history or select a version for deployment; use [Get call flow](/docs/apis/rest/call-flows/get-call-flow) for the current editable resource, or SWML Scripts when you do not need the Call Flow Builder deployment lifecycle.

#### Permissions

The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_, _Messaging_, _Fax_, or _Video_.

[Learn more about API scopes](/docs/platform/your-signalwire-api-space).

## Path parameters

- `id` string, required

## Response `200`

The request has succeeded.

- CallFlowVersionListResponse
  - `data` CallFlowVersion[], required — List of Call Flow Versions
    - `id` string, uuid, required — Universal Unique Identifier.
    - `version` string, required — The version number.
    - `created_at` string, required — The creation timestamp.
    - `updated_at` string, required — The last update timestamp.
    - `flow_data` object — Call Flow Builder state, stored as an opaque JSON object.
    - `relayml` object — The calling SWML document this version snapshots. Uses [calling SWML methods](/docs/swml/reference/calling).
  - `links` CallFlowVersionsPaginationResponse, required
    - `self` string, uri, required — Link of the current page
    - `first` string, uri, required — Link to the first page
    - `next` string, uri, required — Link to the next page
    - `prev` string, uri — Link to the previous page

## Other responses

- `401` — Access is unauthorized.
- `404` — The server cannot find the requested resource.
- `500` — An internal server error occurred.

## Changes

> 137 revisions in range; 3 could not be searched.

- **2026-08-20** `e79dcc8b2150` — 1 breaking, 2 info
  - the `data/items/relayml` response's property type/format changed from ``/`` to `object`/`` for status `200`
  - removed `#/components/schemas/SWML.Calling.SWMLObject` from the `data/items/relayml` response property `allOf` list for the response status `200`
  - added 'unevaluatedProperties' constraint to the `data/items/relayml` response property for the status `200`
- …earlier changes not shown

[Full history](https://skmtc.dev/signalwire/apis/signalwire-rest-api/changes/api/fabric/resources/call_flow/:id/versions/get.md)

---

[API](https://skmtc.dev/signalwire/apis/signalwire-rest-api.md) · [All operations](https://skmtc.dev/signalwire/apis/signalwire-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/signalwire/signalwire-rest-api/revisions/792d5b8e2970/schema)