Bucket MCP (Beta)

We’re constantly striving to make feature flagging as frictionless as possible. To that end, we’ve just released the Bucket MCP in beta.

Model Context Protocol (MCP) lets an LLM interact with external data, in this case the Bucket API.

So with Bucket MCP you can flag features directly from the chat window in your code editor. Whether that’s VS Code, Cursor, Windsurf, Claude—any IDE that has MCP support.

For example, if you’ve built a “Download CSV” feature and want to flag it, you no longer have to go to bucket.co or use the CLI to create a feature key.

Instead, ask the MCP to do it for you: “flag the download button with bucket.”

The Bucket MCP will then create a feature key on bucket.co with a relevant name and provide the context needed so your IDE's LLM will flag the feature in the codebase.

Here’s what it looks like in action:

As shown in the video, you can also use Bucket MCP to grant company segments and individual companies or users access to the feature—straight from the chat window.

To give “Acme” access, for example, you’d ask something like: “give Acme access to the download csv feature” and Bucket will look up the company name and enable the Download CSV feature for it.

To get started, add the Bucket MCP in your IDE. Here are instructions on how to do that.

Happy prompting!