MCP SERVER

Nostr Signer

Approve Nostr signatures with your own browser signer without exposing a private key.

Browser & web automationmcp

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About Nostr Signer

Approve Nostr signatures with your own browser signer without exposing a private key.

How to connect

What is the endpoint and how does it run?

Hosted remote server over Streamable HTTP at https://signer.frontiercrown.com/mcp.

How do I add Nostr Signer to Claude Code, Cursor or Claude Desktop?

One command, any client (npm)

npx ruagentic add nostr-signer

Claude Code

claude mcp add --transport http nostr-signer https://signer.frontiercrown.com/mcp

Cursor, Windsurf and other clients that accept a URL (mcp.json)

{
  "mcpServers": {
    "nostr-signer": {
      "url": "https://signer.frontiercrown.com/mcp"
    }
  }
}

Claude Desktop (claude_desktop_config.json, via the mcp-remote bridge)

{
  "mcpServers": {
    "nostr-signer": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://signer.frontiercrown.com/mcp"
      ]
    }
  }
}

Snippets are generated from the published endpoint; the server name nostr-signer is only a label you can change. Add the credentials the publisher documents.

Project website Source repository

REMOTE ENDPOINThttps://signer.frontiercrown.com/mcpUse this URL in a compatible client. Follow the provider’s authentication instructions.

Questions and answers

What is Nostr Signer?

Nostr Signer is an MCP server in the Browser & web automation category. Approve Nostr signatures with your own browser signer without exposing a private key.

How do I connect to Nostr Signer?

Hosted remote server over Streamable HTTP at https://signer.frontiercrown.com/mcp. The listing page has ready-made snippets for Claude Code, Cursor and Claude Desktop.

Where is Nostr Signer published?

Its homepage is https://signer.frontiercrown.com/ and its source repository is https://github.com/hudhaifahz/nostr-signer-chatgpt. RUAGENTIC read these details from Official MCP Registry on October 4, 2026 and did not install or run the project.

Sources and checks

View the source

Source information collected October 4, 2026.

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