Stellar MCP Server for XDR

An Model Context Protocol (MCP) server that provides tools for interfacing with Stellar XDR via XDR-JSON and JSON Schema.

Agents can use the MCP server to understand what XDR means, modify XDR values, and create new XDR values.

Provides five tools:

• mcp_stellar-xdr_types - Get the supported XDR types.
• mcp_stellar-xdr_json_schema - Get the JSON schema for an XDR type.
• mcp_stellar-xdr_guess - Guess what type Stellar XDR is, getting back a list of possible types.
• mcp_stellar-xdr_decode - Decode a Stellar XDR to JSON.
• mcp_stellar-xdr_encode - Encode a Stellar XDR from JSON.

Usage

To use with agents, setup a stdio MCP configuration with your agent calling the following command:

{
  "command": "npx",
  "args": ["deno", "run", "--allow-read", "https://github.com/stellar/mcp-stellar-xdr/raw/refs/heads/main/mcp-stellar-xdr.ts"]
}

If you have deno installed you can omit the npx command and call deno directly.

Examples

Create an XDR value

Describe a transaction

Answer a specific question about a transaction

Modify a transaction