RemoteFree server, account needed

ASPERN MCP server

org.aspern/aspern

What the chain records about an address before you pay it, and whether a payment fits it.

Install ASPERN in Claude Code

Claude Code
claude mcp add --transport http aspern https://aspern.org/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "aspern": {
      "url": "https://aspern.org/mcp"
    }
  }
}

Frequently asked questions

What does the ASPERN MCP server do?

What the chain records about an address before you pay it, and whether a payment fits it.

Is the ASPERN MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does ASPERN run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add ASPERN to Claude Code?

Run: claude mcp add --transport http aspern https://aspern.org/mcp

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