---
title: "Update a native A/B test, including active state, variants, traffic, and conversion goal"
method: POST
path: "/api/mcp/tools/update_ab_test"
tags: ["tools"]
---

# Update a native A/B test, including active state, variants, traffic, and conversion goal

`POST /api/mcp/tools/update_ab_test`

## Request

- Base URL: `https://finestructure.ai`
- URL: `https://finestructure.ai/api/mcp/tools/update_ab_test`
- Auth: HTTP bearer

Update a native A/B test, including active state, variants, traffic, and conversion goal. Creates a Saved Version before the change.

## Request body

- object
  - `app_id` string, required: The app ID
  - `test_id` string, required: A/B test ID
  - `name` string: Optional new name
  - `page_name` string: Optional new base route page
  - `variants` object[]: Optional replacement variants. Traffic must total 100.
  - `is_active` boolean: Optional active state
  - `goal_event_type` string: Optional conversion goal type
  - `goal_event_filter` object: Optional conversion goal filter

## Response `200`

Tool executed successfully

- ToolResult
  - `ok` boolean, required
  - `tool` string, required
  - `result` object, required

## Other responses

- `400`: Invalid arguments for this tool
- `401`: Missing or invalid bearer token
- `402`: Not enough credits on the account
- `403`: Token scope does not permit this tool
- `404`: Unknown tool name
- `429`: Rate limit exceeded, retry after the indicated delay
- `500`: Internal error while executing the tool

---

[API](https://skmtc.dev/finestructure/apis/fine-structure-api.md) · [All operations](https://skmtc.dev/finestructure/apis/fine-structure-api/llms.txt) · [OpenAPI document](https://skmtc.dev/finestructure/apis/fine-structure-api/revisions/02c50ed5fd70?raw)