---
title: "Fork Workflow Variant"
method: POST
path: "/workflows/variants/fork"
tags: ["Workflows"]
---

# Fork Workflow Variant

`POST /workflows/variants/fork`

## Request body

- WorkflowForkRequest
  - `workflow` WorkflowFork, required
    - `workflow_revision` WorkflowRevisionFork
      - `flags` WorkflowFlags
        - `is_custom` boolean
        - `is_evaluator` boolean
        - `is_human` boolean
        - `is_chat` boolean
      - `tags` object, nullable
      - `meta` object, nullable
      - `name` string, nullable
      - `description` string, nullable
      - `slug` string, nullable
      - `data` WorkflowRevisionDataInput — Extends SDK's WorkflowRevisionData with legacy field support for migration. SDK format (new): - version: str - uri: Optional[str] - url: Optional[str] - headers: Optional[Dict[str, Union[str, Reference]]] - schemas: Optional[JsonSchemas] # with parameters/inputs/outputs - script: Optional[Data] - parameters: Optional[Data] Legacy format (old, from config_parameters): - service: dict with {agenta, url, format, ...} - configuration: dict with parameters
        - `script` object, nullable
        - `parameters` object, nullable
        - `version` string, nullable
        - `uri` string, nullable
        - `url` string, nullable
        - `headers` object, nullable
        - `schemas` JsonSchemasInput
          - `parameters` object, nullable
          - `inputs` object, nullable
          - `outputs` object, nullable
        - `service` object, nullable
        - `configuration` object, nullable
      - `message` string, nullable
    - `revision` RevisionFork
      - `flags` object, nullable
      - `tags` object, nullable
      - `meta` object, nullable
      - `name` string, nullable
      - `description` string, nullable
      - `slug` string, nullable
      - `data` object, nullable
      - `message` string, nullable
    - `workflow_revision_id` string, uuid, nullable
    - `revision_id` string, uuid, nullable
    - `workflow_variant` WorkflowVariantFork
      - `flags` WorkflowFlags
        - `is_custom` boolean
        - `is_evaluator` boolean
        - `is_human` boolean
        - `is_chat` boolean
      - `tags` object, nullable
      - `meta` object, nullable
      - `name` string, nullable
      - `description` string, nullable
      - `slug` string, nullable
    - `variant` VariantFork
      - `flags` object, nullable
      - `tags` object, nullable
      - `meta` object, nullable
      - `name` string, nullable
      - `description` string, nullable
      - `slug` string, nullable
    - `workflow_variant_id` string, uuid, nullable
    - `variant_id` string, uuid, nullable
    - `workflow_id` string, uuid, nullable
    - `artifact_id` string, uuid, nullable
    - `depth` integer, nullable

## Response `200`

Successful Response

- WorkflowVariantResponse
  - `count` integer
  - `workflow_variant` WorkflowVariant
    - `workflow_id` string, uuid, nullable
    - `artifact_id` string, uuid, nullable
    - `flags` WorkflowFlags
      - `is_custom` boolean
      - `is_evaluator` boolean
      - `is_human` boolean
      - `is_chat` boolean
    - `tags` object, nullable
    - `meta` object, nullable
    - `name` string, nullable
    - `description` string, nullable
    - `created_at` string, date-time, nullable
    - `updated_at` string, date-time, nullable
    - `deleted_at` string, date-time, nullable
    - `created_by_id` string, uuid, nullable
    - `updated_by_id` string, uuid, nullable
    - `deleted_by_id` string, uuid, nullable
    - `slug` string, nullable
    - `id` string, uuid, nullable

## Other responses

- `422` — Validation Error

## Changes

- **2026-02-27** `8fcd55a5a656` — 1 info
  - endpoint added
- **2025-06-27** `e3e84db47198` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/agenta-ai/apis/agenta-api/changes/workflows/variants/fork/post.md)

---

[API](https://skmtc.dev/agenta-ai/apis/agenta-api.md) · [All operations](https://skmtc.dev/agenta-ai/apis/agenta-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/agenta-ai/agenta-api/revisions/edbcb02ac8b1/schema)