---
title: "Get stream usage SDK versions"
method: GET
path: "/api/v2/usage/streams/{source}/sdkversions"
tags: ["Account usage (beta)"]
---

# Get stream usage SDK versions

`GET /api/v2/usage/streams/{source}/sdkversions`

Get a list of SDK version objects, which contain an SDK name and version. These are all of the SDKs that have connected to LaunchDarkly from your account in the past 60 days.

## Path parameters

- `source` string, string, required — The source of streaming connections to describe. Must be either `client` or `server`.

## Response `200`

SDK Versions response

- SdkVersionListRep
  - `_links` object, required — The location and content type of related resources
  - `sdkVersions` SdkVersionRep[], required — The list of SDK names and versions
    - `sdk` string, required — The SDK name, or "Unknown"
    - `version` string, required — The version number, or "Unknown"

## Other responses

- `401` — Invalid access token
- `403` — Forbidden
- `429` — Rate limited

---

[API](https://skmtc.net/launchdarkly/apis/launchdarkly-rest-api.md) · [All operations](https://skmtc.net/launchdarkly/apis/launchdarkly-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/launchdarkly/launchdarkly-rest-api/versions/69c5c9aafe78/schema)