Sigstore MCP Server

code-signing for npm packages

Local serverstdioTypeScript

What is the Sigstore MCP server?

If you already use Sigstore, the sigstore mcp server is the piece that lets your assistant work with it directly. code-signing for npm packages.

What the server does

JavaScript libraries for interacting with [Sigstore][6] services.

Installation

changeset on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Changesets — If you are contributing a user-facing or noteworthy change that should be added to the changelog, you should include a changeset with your PR by

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Sigstore's toolset — Changesets — is a fair guide to whether it matches your workflow. It is maintained by GitHub Actions; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Available tools

ToolWhat it does
ChangesetsIf you are contributing a user-facing or noteworthy change that should be added to the changelog, you should include a changeset with your PR by running the following command:

How to install the Sigstore MCP server

{
  "mcpServers": {
    "sigstore": {
      "command": "npx",
      "args": ["-y", "changeset"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Example prompts to try

  • Use Sigstore to Changesets.

Frequently asked questions

It connects Sigstore to MCP-compatible AI assistants such as Claude and Cursor, exposing 1 tool (Changesets) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Sigstore directly.