---
title: "Tank changes history"
method: GET
path: "/{region}/tanks/{slug}/history"
tags: ["Tanks"]
---

# Tank changes history

`GET /{region}/tanks/{slug}/history`

## Request

- Base URL: `https://unicum.gg/api`
- URL: `https://unicum.gg/api/{region}/tanks/{slug}/history`
- Auth: none required

The characteristic changes a tank has gone through across game versions (buffs and nerfs to firepower, gun handling, mobility, survivability and concealment), grouped by version, newest first. Built forward from the moment tracking started, since Wargaming publishes no archive of past client versions. Values are raw stored values; apply each field's scale to display. 404 when the slug maps to no tank on the region.

## Path parameters

- `region` 'eu' | 'na' | 'asia', required: Game server region.
- `slug` string, required: Tank slug (e.g. is-7).

## Response `200`

Successful response

- TankHistoryResponse
  - `tankId` number, required
  - `slug` string, required
  - `versions` TankHistoryVersion[], required
    - `gameVersion` string, required
    - `capturedAt` string, date-time, required
    - `changes` TankSpecChange[], required
      - `field` string, required
      - `previous` number, nullable, required
      - `next` number, nullable, required
  - `testVersion` string, nullable, required: The Common Test build these pending changes were read from.
  - `testChanges` object[], required
    - `field` string, required
    - `previous` number, nullable, required
    - `next` number, nullable, required
  - `devVersion` string, nullable, required: The game version the tank first appeared as a dev stub (placeholder stats, before balancing), or null when it predates our version tracking.
  - `devAt` string, date-time, nullable, required
  - `releasedVersion` string, nullable, required: The game version the tank was released in (its first real spec), or null when it predates our version tracking.
  - `releasedAt` string, date-time, nullable, required

---

[API](https://skmtc.dev/unicum/apis/unicum-gg-api.md) · [All operations](https://skmtc.dev/unicum/apis/unicum-gg-api/llms.txt) · [OpenAPI document](https://skmtc.dev/unicum/apis/unicum-gg-api/revisions/7a7d79a26001?raw)