RFC MCP Server

Instructions

Implementation Reference

• src/index.ts:281-330 (handler)

  The handler for the 'get_rfc_section' tool. Validates parameters, fetches the RFC using rfcService, finds the section by case-insensitive title match, and returns the JSON stringified section or appropriate error.

  case 'get_rfc_section': {
    if (typeof typedArgs.number !== 'string' || typeof typedArgs.section !== 'string') {
      throw new McpError(
        ErrorCode.InvalidParams,
        'RFC number and section must be strings'
      );
    }
    
    try {
      const rfc = await rfcService.fetchRfc(typedArgs.number);
      
      // Find the matching section
      const sectionQuery = typedArgs.section.toLowerCase();
      const section = rfc.sections.find(s => 
        s.title.toLowerCase().includes(sectionQuery) || 
        s.title.toLowerCase() === sectionQuery
      );
      
      if (!section) {
        return {
          content: [
            {
              type: 'text',
              text: `Section "${typedArgs.section}" not found in RFC ${typedArgs.number}`,
            },
          ],
          isError: true,
        };
      }
      
      return {
        content: [
          {
            type: 'text',
            text: JSON.stringify(section, null, 2),
          },
        ],
      };
    } catch (error) {
      return {
        content: [
          {
            type: 'text',
              text: `Error fetching section from RFC ${typedArgs.number}: ${error}`,
          },
        ],
        isError: true,
      };
    }
  }

• src/index.ts:168-185 (registration)

  Registration of the 'get_rfc_section' tool in the MCP server tools list, including name, description, and input schema definition.

    name: 'get_rfc_section',
    description: 'Get a specific section from an RFC',
    inputSchema: {
      type: 'object',
      properties: {
        number: {
          type: 'string',
          description: 'RFC number (e.g. "2616")',
        },
        section: {
          type: 'string',
          description: 'Section title or number to retrieve',
        },
      },
      required: ['number', 'section'],
      additionalProperties: false,
    },
  },

• src/index.ts:170-184 (schema)

  Input schema validation for the 'get_rfc_section' tool parameters.

  inputSchema: {
    type: 'object',
    properties: {
      number: {
        type: 'string',
        description: 'RFC number (e.g. "2616")',
      },
      section: {
        type: 'string',
        description: 'Section title or number to retrieve',
      },
    },
    required: ['number', 'section'],
    additionalProperties: false,
  },