rfcxml

RFCXML MCP Server provides a structured understanding of RFC documents by leveraging RFCXML parsing. It offers tools to extract the hierarchical structure of RFCs, pull out normative requirements (MUST/SHOULD/MAY) with context, gather definitions and their scopes, build RFC dependency graphs, and verify statements or generate implementation checklists. You can interact with the server to obtain an XML-backed or text-fallback parsing of RFCs, retrieve related sections, and obtain relationships such as dependencies and cross-references. The available tools include get_rfc_structure, get_requirements, get_definitions, get_rfc_dependencies, get_related_sections, validate_statement, and generate_checklist. Each tool returns structured data that can be consumed by AI agents or human readers to build understanding, trace requirements, and verify implementations against RFC specifications.

Prerequisites:

• Node.js v20 or newer installed on your system
• Internet access to fetch the MCP server package

Installation steps:

1. Install via npx (as recommended for MCP servers):

# Run the MCP server directly without global install
npx -y @shuji-bonji/rfcxml-mcp

2. If you prefer a local/global install (optional):

# Global install (optional)
npm install -g @shuji-bonji/rfcxml-mcp

3. Configure the MCP client to use the server:

{
  "mcpServers": {
    "rfcxml": {
      "command": "npx",
      "args": ["-y", "@shuji-bonji/rfcxml-mcp"]
    }
  }
}

4. Verify installation by listing available tools (if the server exposes them via CLI or API) and ensure your configuration is picked up by your MCP runner.

Notes and tips:

• The RFCXML MCP server supports automatic fallback to text parsing when XML is unavailable, but XML parsing is preferred for higher accuracy.
• The server exposes tools across three phases: structure (get_rfc_structure, get_requirements, get_definitions), relationships (get_rfc_dependencies, get_related_sections), and verification (validate_statement, generate_checklist).
• When using in Claude or other MCP clients, ensure your configuration JSON uses the exact server key (e.g., rfcxml) and that the package name is resolved by your environment.
• If you encounter XML parsing issues with older RFCs, the fallback to text parsing may yield lower accuracy; consider cross-checking with the source RFC text.
• You can reference the example Quick Start snippet in documentation to replicate a standard RPC flow.