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StablecoinX

Official registry Finance and payments

StablecoinX merchant tools: auth, payments, paymaster, webhooks, floYsh sites and vault settings.

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @stablecoinx/mcp
Claude Code 
claude mcp add stablecoinx -e 'SCX_STATE_PASSPHRASE=<your scx_state_passphrase>' -e 'SCX_STATE_DIR=<SCX_STATE_DIR>' -- npx -y @stablecoinx/mcp@0.1.13
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "stablecoinx": {
            "command": "npx",
            "args": [
                "-y",
                "@stablecoinx/mcp@0.1.13"
            ],
            "env": {
                "SCX_STATE_PASSPHRASE": "<your scx_state_passphrase>",
                "SCX_STATE_DIR": "<SCX_STATE_DIR>"
            }
        }
    }
}

Environment variables

  • SCX_STATE_PASSPHRASE required secret Passphrase used to encrypt the local state file (JWT / API key / session key) at rest. Pick any string. The harness endpoint, thirdweb client, origin and login chain are baked into the package — this is the only required input.
  • SCX_STATE_DIR Optional. Directory for the encrypted local state file. Defaults to %APPDATA%/stablecoinx-mcp (Windows) or $XDG_CONFIG_HOME/stablecoinx-mcp.

Frequently asked questions

What is StablecoinX?

StablecoinX merchant tools: auth, payments, paymaster, webhooks, floYsh sites and vault settings.

How do I install StablecoinX?

It runs on your machine. In Claude Code: claude mcp add stablecoinx -e 'SCX_STATE_PASSPHRASE=<your scx_state_passphrase>' -e 'SCX_STATE_DIR=<SCX_STATE_DIR>' -- npx -y @stablecoinx/mcp@0.1.13. For other clients, paste the JSON configuration from this page into their MCP settings.

Does StablecoinX need an API key?

Yes. It expects SCX_STATE_PASSPHRASE, which you set in its configuration.

Is StablecoinX open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains StablecoinX?

It is published by e2xlabs. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.