---
title: "Retrieve available versions and their associated system models."
method: GET
path: "/v0/versions"
tags: ["api"]
---

# Retrieve available versions and their associated system models.

`GET /v0/versions`

This endpoint returns a dictionary where keys represent available version numbers (e.g., `"3.10.1"`) and values are lists of system models compatible with that version.

## Response `200`

Successful response with available versions

- VersionsResponse

## Other responses

- `401` — Unauthorized
- `403` — Forbidden
- `404` — Requested resource not found
- `500` — Internal Server Error

---

[API](https://skmtc.dev/ecoinvent/apis/ecoquery-user-api.md) · [All operations](https://skmtc.dev/ecoinvent/apis/ecoquery-user-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/ecoinvent/ecoquery-user-api/revisions/8a4aea6b7285/schema)