---
title: "Client-server versions"
method: GET
path: "/_matrix/client/versions"
tags: ["matrix-cs"]
---

# Client-server versions

`GET /_matrix/client/versions`

The client-server spec versions and unstable features we claim to speak. Mostly polite fiction: a hardcoded list of versions we do not really implement, kept only because matrix.to and older clients refuse to talk to anything that will not recite them. We are a search index wearing a homeserver's coat for a handful of read endpoints, not a real homeserver.

## Response `200`

The spec versions we pretend to support so clients stop sulking

- GithubComEtkeccMrsInternalModelClientVersions
  - `unstable_features` object — unstable MSCs we actually honor
  - `versions` string[] — advertised client-server spec versions

---

[API](https://skmtc.net/etkecc/apis/matrix-rooms-search-api.md) · [All operations](https://skmtc.net/etkecc/apis/matrix-rooms-search-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/etkecc/matrix-rooms-search-api/revisions/ae3c2fd65492/schema)