---
title: "Get evolution variable"
method: GET
path: "/api/v2/evolution-variable/{id}/"
tags: ["evolution"]
---

# Get evolution variable

`GET /api/v2/evolution-variable/{id}/`

Evolution variables represent parameters (such as Encryption Constant and Personality Value) used in boolean expressions for form-branching evolutions. Check out [Bulbapedia](https://bulbapedia.bulbagarden.net/wiki/Personality_value) for greater detail.

## Path parameters

- `id` string, required

## Response `200`

- EvolutionVariableDetail
  - `id` integer, required
  - `name` string, required
  - `symbol` string, required
  - `data_type` string
  - `source` string — Where the value comes from: 'pokemon' for data stored on the Pokemon (e.g. EC, PID), 'player-input' for an action taken by the player while evolving (e.g. SPIN_DIR, SPIN_SEC)
  - `version_group` VersionGroupSummary, required
    - `name` string, required
    - `url` string, uri, required
  - `names` EvolutionVariableName[], required
    - `name` string, required
    - `language` LanguageSummary, required
      - `name` string, required
      - `url` string, uri, required
  - `descriptions` EvolutionVariableDescription[], required
    - `description` string
    - `language` LanguageSummary, required
      - `name` string, required
      - `url` string, uri, required

## Changes

- **2026-09-25** `40d7b32e6bdf` — 1 info
  - added the optional property `source` to the response with the `200` status
- **2026-09-16** `dadc154cbfcd` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/pokeapi/apis/poke-api/changes/api/v2/evolution-variable/:id/get.md)

---

[API](https://skmtc.dev/pokeapi/apis/poke-api.md) · [All operations](https://skmtc.dev/pokeapi/apis/poke-api/llms.txt) · [OpenAPI document](https://skmtc.dev/pokeapi/apis/poke-api/revisions/40d7b32e6bdf?raw)