---
title: "Set JA4 Library"
method: PUT
path: "/open/ja4"
tags: ["JA4"]
---

# Set JA4 Library

`PUT /open/ja4`

Set JA4 Library

## Request body

- Ja4SetJa4Request
  - `pro` boolean

## Response `200`

OK

- object
  - `data` object
  - `err` string
  - `msg` string

## Changes

- **2026-04-01** `de6007edcff9` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/chaitin/apis/mgt-api/changes/open/ja4/put.md)

---

[API](https://skmtc.dev/chaitin/apis/mgt-api.md) · [All operations](https://skmtc.dev/chaitin/apis/mgt-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/chaitin/mgt-api/revisions/de6007edcff9/schema)