---
title: "Grafana version compatibility | Grafana documentation"
description: "Datasource errors on Grafana versions earlier than 9.0."
---

# Grafana version compatibility

Some datasource API paths exist only in newer Grafana releases. This article explains a common error on Grafana before 9.0.

## What you’ll achieve

You can confirm whether an upgrade fixes datasource-related MCP errors.

## Before you begin

- Access to upgrade or validate the Grafana version for your stack.

## Recognize the error

If you see an error like this when using datasource-related tools:

![Copy code to clipboard](/media/images/icons/icon-copy-small-2.svg) Copy

```none
get datasource by uid : [GET /datasources/uid/{uid}][400] getDataSourceByUidBadRequest {"message":"id is invalid"}
```

you are likely on **Grafana before 9.0**. The `/datasources/uid/{uid}` API was added in Grafana 9.0; datasource operations that rely on it fail on older versions.

## Resolve the issue

Upgrade Grafana to **9.0 or later**. The MCP server [requires Grafana 9.0 or later](../../introduction/) for full functionality.

## Next steps

- [Introduction](../../introduction/)
- [Client configuration examples](../../set-up/client-configuration-examples/)